MÔI TRƯỜNG, hay Khoa học về Côn trùng, liên quan đến rất nhiều sinh vật sống, một số trong đó chúng ta nhìn thấy xung quanh chúng ta mỗi ngày trong cuộc sống. Chúng có số lượng nhiều hơn bất kỳ nhóm động vật nào khác, với khoảng 12.000 loại khác nhau được biết đến để sống ở Anh, mặc dù các nhóm nhỏ hơn và kém hấp dẫn hơn hiện tại rất chưa được biết đến; và ít nhất hai mươi số lần này được biết là được tìm thấy trong các phần khác của thế giới. Nhưng để có được kiến thức chung về côn trùng Anh, không có nghĩa là cần thiết để làm quen với mỗi một trong số 12.000 loài này; vì họ đã bị chia rẽ thành các phần, sao cho mỗi loài riêng lẻ có thể được xác định và sự tương đồng của nó với những người giống như họ nhận thấy nhất, và sự khác biệt của nó đã chỉ ra. Khi bạn đã có được một ý tưởng chung về các phần khác nhau của côn trùng, sau đó bạn có thể chọn nhóm mà bạn thích nhất và giới hạn sự chú ý của bạn vào nó; nhưng hầu hết con người, khi họ bắt đầu thu thập côn trùng, thu thập mọi thứ theo cách của họ, cho đến khi họ hình thành sở thích đặc biệt này.
Trang 1WEKlRBY
Trang 7THE YOUNG COLLECTOR.
Ofthe Zoological Department, British Museum', Author of "An
Elementary Text Book of Entomology,""European
Butterfliesand Moths"etc., etc.
LONDON:
W SWAN SONNENSCHEIN & CO.,
PATERNOSTER SQUARE.
1885
Trang 8TheSelwood PriutiugWorks,Frome, andLondon.
Trang 9M3GS952
Trang 11THE ORDERS OF INSECTS.
ENTOMOLOGY, ortheScience ofInsects,concerns a great
num-berof living creatures,someofwhich we see around us every
dayofourlives. Theyarefarmore numerous than anyother
inhabitEngland, although the smallerandlessattractivegroups
are very insufficiently known at present; and at least twenty
timesthisnumberareknowntobe foundin other parts of theworld
Butinordertoobtaina generalknowledge ofBritish insects,
it is by no means necessaryto make yourself acquainted with
everyoneof these 12,000 species; fortheyhave been divided
into sections,so that each individual species can be identified
differencespointedout Whenyou haveacquired a general idea
of the varioussectionsofinsects,you canthen select the group
people,when they begin to collect insects, collect everything
preference
Naturalistshave begunbydividing the various objects which
large sections called Sub-Kingdoms, to one of which,
called-variouslyArthropoda, Annulosa,or Articulata,insects belong
vertebrate animals, buttheirbodies andlimbs are formedof a
number of jointed pieces, of a bony or horny consistence, to
cover-ing formswhatiscalled theirexternal skeleton,andits strength
and solidity is such that their activity and bodily powers arefrequently far greater in proportion to their size than in any
vertebrate animal
Crustacea, including Crabs, Lobsters,Shrimps,Wood-lice,etc.;
We
Trang 124 THE ORDERS OF INSECTS.
characters ofthethreefirstclasses,asthe Insects are separated
fromthem bya greatnumberofcharacters
Insectshavesix legs in theperfect state,and no more; four
(ortwo) wings,twoeyes,composedof a greatnumberoffacets,
simpleeyes,or stemmata, onthetip of thehead Their body
is composed of thirteen segments, dividedinto head, thorax,
system at all resembling those of the higher animals The
place of the heart is supplied by an organ called the greatdorsalvessel,lying along theback; andthe brain and nervous
connected ganglia, or knots ofnervous matter, lying along the
orair-holes, opening on eachsideof the greaternumberofthe
themusclesbeing far more numerousthan those of vertebrateanimals Insects pass through four stages, called respectivelyegg, larva(or caterpillar),pupa(or chrysalis),andimago,though
these aremore sharply defined in some insects than in others
state;andalthough theysometimes possess morethan six legs
in this state (and occasionally noneat all),yet the larvae of
insects are not generally liable to be mistaken forany otheranimals
ofaninsectiscomposed; the firstforms the head, thesecond
tothe fourth the thorax,andtheremaindertheabdomen These
thirteensegments(except occasionallyoneortwoof the terminalsegments) are generally distinct in larvae,but become more or
the threedivisionsof head, thorax, andabdomenarealwaystinctly visible,and are much more clearlydefinedthan in thelarvastate
dis-Thehead contains the organs of sense,and the mouth In
additionto the eyes, there is always a pair of long jointedorgans called antennae, which appear to be organs of touch,
smell, and probablyof hearing After thelossof these organs,
aninsectbecomeswhollyincapable of directingits flight. The
antennaedifferverymuchin shapein different insects,and are
called simple,pectinated, lamellated,clavate,etc., accordingly
them
Trang 13T&E ORDERS OF INSECTS. 5
haveaseriesof long processes near the end,opening andclosing
atpleasure, almostlikeafan
The mouthofinsectsisformedeither forbiting orforsuction
{InsectaMandibulata),andthosewhichareprovidedwith a boscistoimbibeliquidfood arecalled haustellate insects (InsectaHanstellata) Mostof thelatter,however, aremandibulateinthelarvastate, and manymandibulateinsectsarelikewiseprovided
pro-witha proboscis
The three segments of the thorax are called the prothorax,mesothorax,and metathoraxrespectively. Thefirstbearsonthe
pair ofwings, andthesecondpair oflegs; andthethird bears
thicker than the hind wings, so as to form wing-cases ratherthan additional organs of flight, they are called elytra. The
air-tubes, callednervures, thearrangementofwhichdifferssiderablyinvariousinsects The legs are divided into severalparts First come the coxce, or hips,which are generally the
con-thickest parts of the leg; next a connectingjoint, called thetrochanter; afterwhichfollowtwostraight parts, calledfemora,
orthighs,andtibiae,or shanks,respectively Belowthese comes
thefoot,whichis composedoffive joints, called joints of the
tarsi, andterminatingin a pair of claws; but in manyinsects,
the claws, oreven oneormore of the joints of the tarsi
them-selves,are undeveloped Thepoint ofintersectionof thefemurandtibiaiscalledtheknee; andthe knees,likethe trochanters,are occasionally of adifferentcolourtotherestof theleg. The
legs, liketherestof the body, maybe smooth, or clothed with
hairs, or spines; there are oftena pair of long spursat the end
of thetibiae,and sometimesalso inthe middle
In many insects,the abdomen is completely covered bythe
a variety of curious appendages, which are either directly or
indirectlydefensive oroffensiveweapons,orconnected with the
and
Trang 14THE ORDERS OF INSECTS.
Insectsdifferverymuchin size; the smallestinsect known issaid tobea four-winged fly,the larva ofwhichlives in theegg
ofaparasiteofaNorthAmericanbee Thislittlecreature has
beautifully formed wings, each of which resembles a single
feather Itmeasures one-ninetieth ofaninch in length
species in this country, and need not despair of ultimately
hand,someof the great tropical moths and locusts measure a
footacrossthewings;butwemust be contentedto regard theDeath's Head Hawk-Moth, which sometimes measures nearly
sixinches across the wings, as ourlargest British insect
Manyof our readers will perhaps think 12,000 a very large
numberofdifferentkinds ofinsectstobe foundinonecountry;
butinsectsarebynomeans soabundant in England as in theadjacent parts of the Continent,norare they so destructive to
our crops. Islands are always poorer in plants and animals
than continents; besides,whenforestsarecleared,and marshes
are drained, numbersofinsectsare destroyed,and those which
are confinedto such localities are verylikely to become
exter-minated Itis almost certain that a fewcenturies ago,when
Infact,severaldifferentkinds areknowntohavebecomeextinct
living; and if this is the case among largeand conspicuous
insects,itmust alsohave happened to manysmall and spicuous kinds without our beingevenawareofit. The south-eastern counties having the finest and driest climate in the
incon-islands,as well asbeing those nearest the Continent, producemost species ofinsects Insects are much less numerous in
ScotlandandIrelandthaninEngland,thoughthese parts of the
kingdomproducesomespecies nottobemet with elsewhere in
theBritishIslands AlthoughnearlyallourBritish insects are
at leastascommonontheContinentaswith us (and oftenmuch moreso),yet there are a few species and varieties, generallyconfined to veryrestricted localities,which have hitherto only
large sections, called Orders Some writers admit more, but
the seven great Orders are those which are universally
recog-nised,andthe smaller ones arenowgenerally treatedasforming
part of theothers Thesedatefromthetime of Linnseus, who
Trang 17THE ORDERS OF INSECTS. 7
Ccleoptera, OrtJwptcra, Neuroptcra, Hymenoptera, Lepidoptera,Hemiptera,and Diplcra; according to the general character of
and the three latter haustellate But we musthere point out
thatit isimpossibletoplaceinsects inalineararrangement which
shall also be natural Thus, even in the arrangement of theOrders, theHemiptera might be placedbetweenthe OrtJwptera
Diptera,just as well as in the order in whichwehaveplacedthemabove TheColeoptera,Hymenoptera, andDiptera are thethree largest Orders, of each ofwhich we have above three
numerous
TheCcleopfera,orBeetles,have hard hornywing-cases,beneath
so astofit stillcloser Theirlarveehavesix legs,andtheirpupoeare inactiveand mummy-like,thelegsof thefuture beetlebeing
enclosedinseparatesheaths. Insomecases theperfect insectisdestituteofwings andelytra, as in the female of the common glow-worm; and in many other beetles the wingsare absent,theelytrabeingeithermovable, but of courseuseless for flight;
orsoldered togetheratthesuture, asthe lineiscalledwherethe
elytra meet over the back of the abdomen, but the elytra ofbeetles veryseldomoverlap. We will proceed to enumerate a
fewof thecommonerandmoreinteresting beetles
The Cicindelidce, or Tiger Beetles, are handsome, colouredbeetles, with largeheads andstrong jaws,whichrun
bright-and fly actively in the sunshine The common Green Tiger
Beetle (Cicindela Campestris) is green, with white markings,
andits larva is alsocarnivorous,formingaburrowinthe sand,
ofa family of theOrderNeuroptera, afew species ofwhichare
country The Green Tiger Beetle is abouthalf an inch in
length
The Carabida, or Ground Beetles, are also carnivorous.Several species of the typical genus Carabusare common,and
inch long, and are of dark colours, with purplish, greenish,
or brassy shades Theyhave movable elytra, but no wings.
be noticed in
Trang 18TItE ORDERS OF INSECTS.
similarsituations,most ofthem being black or greenish,often
GroundBeetle(Carabus Violaceus),naturalsize.
fewsmall species arefound onthe seashore at low-water mark,
thus beingamong the veiy few insects whichmay be looked
uponasmarine
DytlscusMarginalis(Male), naturalsize.
especially in their earlierstages; buttwo
or threefamiliesofbeetlesaremore or
Trang 19THE ORDERS OF INSECTS. $stages The species of Dytiscus are large, broad, flattishbeetles,foundinfreshwater,andareofabrownorolive colour,
with yellowish borders. They are veiy voracious, feeding on
DytiscusMarginalis(Female), naturalsize.
smaller insects, and sometimes on small fish. They flystrongly,andinthe evening oftenquitthewaterandflytolong
distances Manysmaller species of Dytiscida inhabit ourpondsand streams; but the most interesting of the smallerwater
beetles are the Gyrimdce, or Whirligig Beetles, little black
beetleswith very longfore legs, whichmayoftenbeseen rapidly
circlingaboutonthe surface of the water
Thegreatgroupof Staphylinidcemaybe knownbytheirvery
Devil'sCoach-Horse(OcyJ>its Oletts),naturalsize.
short elytra,whichgives them a superficial resemblance to an
Trang 20io THE ORDERS OF INSP1CTS.
with on flowers Some species inhabit the nests of ants, to
of thelargestandbestknownof the Staphylinidceisthe Devil's
rapacious Ifalarmed, it lifts up its head and tail, and it is
capable ofinflicting a severebite,whichmay be dangerousif
theinsecthaslatelybeenfeedingon anyputrid substance
ThespeciesofNecrophorus(Burying Beetles) are black,with
meetwith amouseorbird,they dig a holeunderit,andgradually
earth The femaleis buried with the carrion, in which shedeposits hereggs, andthenmakesherway up to the surface of
a shining black colour, with red spots. Their antennae are
Somesmallerbeetles allied to this, but ofa more oval shape,belonging to the family Dermestidcc^ are exceedingly destructive
namesfromtheirfood, or thelocalities inwhichthey are found.
ThelargestwaterbeetlefoundinEnglandisHydrous Piceus,
colour,andismoreconvex and narrowerthan Dytiscus
The Scarab(zid(Z,or Chafers, maybe known by their shortantennog, the terminal parts ofwhichareexpanded intobroad
flatlayers, whichtheinsectcan openorshutlikeafan All thespecies feedeitheronplants oronthedung of animals They
arelarge,broad, heavilyformedinsects, though some are very
active onthe wing. The Rose Chafer(Cetonia Auratd) is a
brightgreen beetle, with whitish markings on the elytra. It
asbroad Itisoftenfoundnestling in roses,whence it derives
otherflowers
larva feedsonthe roots ofplants,and is often very destructive
tograss-fields,whereas the perfect insect is equally destructive
to trees TheCockchafer isbrown, dusted with white in themale,and the under surface is banded with black andwhite.Several smaller species aresimilarlydestructive to plants,one
Beetle" in Germany, where itswarms on the flowers of that
But common and
Trang 21THE ORDERS OF INSECTS. it
hasbrownelytra, \nd a bronzy-green head andthorax
Gcotrufcs Stcrcorarius, naturalsize.
blackaboveandpurple below,andfeedon dung, asdolikewisethe little beetles of the genus Aphodius> which resemble verysmallCockchafersinappearance,andare oftentobeseenflyingover dung, even on dustyroads
TheStagBeetleisourlargest British beetle,measuringnearly
twoinchesinlengthinlargespecimens, butitvariesconsiderably
Click Beetle (Elatcr Sat/guincus),natural size.
insize. It is remarkable for the enormous sizeof thejawsofthe male The larva feeds on the wood of trees, and the
perfect insectonthesap.
TheElatcrida are narrow with hard
Trang 22THE ORDERS OF INSECTS.
Thehinder angles of the thorax are veryacute,andmanyof thespecieshave a habit ofdoublingthemselves up when theyfall
ontheirbacks,andjerking themselvesontheir legswith aclick.
Theyare therefore sometimes called "
Click Beetles,"andtheirlarvaeare very long,slender,andtough, andaretoo wellknown
to farmers and gardeners as wire-worms The Telephorida
but they are of gayercolours,beingreddish orochreousinstead,
of black or bronzed, and their elytra are unusually soft forbeetles Buttheir habits are predaceous, notwithstandingtheir
apparently fragile structure. The Glow-worm (Lampyris
Noctiluca),in whichthemale is a brown beetle, about halfan
inch long,andthe femaleiswingless,isalliedto these
The Tenebrionida and allied families may be known from
allthe foregoing groups byhaving only fourjoints tothe hindtarsi, and five on the front and middle legs. The precedingfamilieshavefive joints tothetarsiofallthe
legs They may
alsobeknown bytheirantennae, whichare moniliform, or
very familiar, such as the ugly, dull-black, wingless CellarBeetles (Blaps); the rather narrow black beetle (Tenebrio
CellarBeetle(Blaj>sKlortisaga), naturalsize.
^the larva ofwhichfeedsonflour, etc.,andiscalledthe
Meal-worm; the large soft-bodied sluggish Oil Beetle (Mdoe\
generally found among grass; andthe beautiful green Blister
Beetle (Cantharis Vesicatoria},which is foundonash-trees,but
The greatgroup of Curculionid<, or Weevils, maygenerally
Trang 23THE ORDERS OF INSECTS. 13
of long tapering snout, near the extremity ofwhichare placedthe antennae, whichare often bent in the middle at a right
angle They are ofall shapes,colours, and sizes, feed onferent kinds of plants, and are sometimes very destructive
Nut-Weevil{BalaninusAfucioii),magnified
in nuts, and the perfect insect is a small brown beetle In
these,and several of the followingfamilies,the feet haveonly
four joints tothetarsi.
MuskBeetle(AromiaMoschata), naturalsize.
The commonest Musk
Trang 2414 THE ORDERS OF INSECTS.
a green beetleabout aninchlong,whichisfound onthe trunks
ofwillow-trees,andemits a peculiar but agreeable odour The
larvaeof theCerambyddcefeedforthemostparton thewoodof
trees
TheChrysomelida, or Golden-apple Beetles,are generally of
a bright green or coppery colour,andare found, oftenously, on the plants on which they feed The Bloody-nose
gregari-Beetle (TimarchaLcevigata),whichisthelargest British species,
green Itisofa roundish form, andverysluggish,and when
TheHalticida are smaller beetles,which possess the powerofleaping ThedestructiveTurnip Fly(HalticaNemorum],which
elytra, isthe bestknownofthis family.
TheCoccinettidtB)orLadyBirds,haveonly threejoints tothe
Seven-spotLadyBird (Coccinella Septempunctata), magnified.tarsi. They are generally red or yellow, spotted with black;
and are very useful insects, as their larvaefee4 on plant-lice.
The Trichopterygida, the smallest known beetles, which are
The Orthoptera, or Straight-winged Insects, resemble theColeopteraintheforewings beingmuchnarrowerandof amuch
thicker texture thanthe hindwings, which aretherealorgans
offlight. The wing-cases are not horny,as in Coleoptera,but
more resemble parchment. The metamorphosesof Orthopteraare imperfect, that is, the larva, pupa, and perfect insect re-
thereis thereforeno lengthened cessation of feeding ormove*
mentinthelifeof theseinsects
Trang 25coun-THE ORDERS OF INSECTS. i$
tries; but the Order includesseveral commonand well-known
insects, as well as some of the largest and most conspicuous
species thatwepossess.
Earwig(ForficnlaAurlcularia),magnified
among the Coleoptera,fromwhich the pincer-like processesat
Cockroach(Blatta Orientals),natural size.
the extremity of thebodywillat once distinguish them They
Trang 2616 THE ORDERS OF INSECTS.
the short wing-covers whennotin use Theyare very
destruc-tiveto fruit and flowers ahollowapple, or the flowers of the
dahlia,sun-flower, etc.,oftenharbouringa considerablenumber
Thefemaleissaid tobroodoverheryounglikea hen
The Earwig derives its name fromits occasionally enteringthe ear afactwhichhasbeendenied, butwhichisindisputable
The insect may be immediately dislodged from the ear by
pouringoilintoit.
MoleCricket(Gryllotalpa.Vulgaris), naturalsiz e.
species (BlattaOrientalis]isbelievedtobe an importationfrom
abroad, and is generally known as theBlack Beetle This
description would apply well enoughto Blaps; but as Blatta
Unot a nor even black ofa
Trang 27TttE ORDERS OF INSECTS. 17
popular name does not seem very appropriate. Theeggs are
laidinasinglemass,beingenclosedin a capsulej asisalsothecasewithlocusts
A less disagreeable insect is frequently associated with the
a common insect as the House Cricket The Mole Cricket(Gryllotalpa Vulgaris) is a much larger insect, which has the
front legs formed nearly like the pawsof a mole It lives in
The Crickets maybedistinguished fromthe Grasshoppersby
their long antennae The Great Green Grasshopper (Acrida
Viridissimd), asit iscalled,is,however,reallyacricket,thoughbelonging to a differentsection to those mentionedinthe last
paragraph Itis ofa bright green, the hind wings paler,and
the female has an ovipositor about halfas long as her body,
inches Itiscommoninmeadows,etc.,inthesouth ofEngland.
The Grasshoppers,which are about an inch long,belong tothe same family as the Locusts,which they greatly resemble,
except in size. The Migratory Locust(Pachyteles Migratorius}
is about three inches long, and the wings expand aboutfour
inches Theforewingsaremottledwith greyandlightbrown,
un-commonly met with in England,but it doesnot breedin this
country
linked together by links on the borders They are mostly
carnivorous,andtheirmetamorphosisiscompleteinsomegroups
and incomplete in others The principal insectsincluded in
MayFlies,and the Caddis Flies The DragonFliesarelarge,voracious insects,which live in the water during their earlierstages, where they undergo an imperfect metamorphosis, the
pupa finallycreeping out of the water,and giving birth tothe
perfect insect. The smaller species are generally foundinthe
active speciesareoftenfoundinwoodsand onheathsalongway
fromwater Libdlula Depressaisacommon species,measuring
about three inchesinexpanse,and withashort,flatbody, bluish
Trang 28x3 THE ORDERS OF INSECTS.
is alargebrownspecies, measuring four inches in length, andeven more across the wings, which are deeply tinged withyellow The small species ofAgrion, etc., with theirslender
blue, red,and brown bodies and delicate wings,often do not
generallyfoundrestingonthe leaves orstems of water-plants
Dragon Fly(LtbelhilctDcpressa), naturalsize.
amongbushes,withfour transparent wings,somethinglikethose
three-quarters ofan inch across the wings Their bodies are
slender, and comparatively short; and notwithstanding their
beauty, they emit a very disagreeable odour Their larvcefeed
onplant-lice (Aphides')
The MayFlies (Ephemera} are found about runningstreams
They have longfore wings, about aninch and a quarter in
expanse, andvery shorthindwings. Theirtail endsin two orthreelongfilaments,often quiteaslongasthe body
broad and
Trang 29THE ORDERS OP itiSECTS. igterminates in two long filaments The larva is found under
stonesin rivers
called Trichoptera,) or Hairy-winged Insects They are of
differentsizes,upto about twoinches across the wings
isvery imperfectly developed Theirlarvoe live inwater,where
theyformcasesforthemselves composedofbits ofstick,stone,
smallshells,oranyother materialsuitable forthe purpose,which
they can lay their hands on They assume the pupastatein
thesecases,sometimes formingaslightcocoon
Stone Fly (Perla Bicaudata), naturalsize.
are generally smallincomparisonwith thesizeof the body The
Theprincipalgroupsincludedin thisOrderare theSaw Flies,
the Gall Flies,the Ichneumons,theRuby-Tails,andthe Ants,
Wasps, andBees
The Saw Flies(Tenthredinidce} derive their name from theboring apparatus of the female being modified into a pair of
saws,which are used to cut a crevice in the barkor leaves ofplantstoreceive theeggs. Theseeggsproducelarvceresembling
those of Lepidoptera, but withfromeighteentotwenty-two legs,
The best known species is the Gooseberry Fly (Nematus
Trang 30-THE ORDERS OF INSECTS.
black on the back,and measuring abouthalf aninchin length.Itsgregariouslarvaesoonstripthe gooseberryandcurrant bushes
oftheir leaves,whentheyonceget a footingina garden
The Gall Flies(Cyntpidce) are very small four-wingedflies,
the cuticle of
plants, and more especially on the oak The
puncture givesrise to an excrescencein which the larva lives
and grows. These larvae, however, are greatly infested with
parasites, and you maysometimes rear several different species
of small parasitic Hymenoptera from agall, without thereal
Manyofthempuncture the bodies ofcaterpillars, and deposit
thepupa state,whenthelarvae quit the body oftheir victim,
\IchneumonFly(PlmplaTurlonellce),Magnified
frequently forming theircocoons around it. The IchneumonFlies are often gaily coloured, with black and yellow mark-
ings They are slender, elegantly formed insects, with longantennae,andoften a longovipositor,whichissometimesformed
oftwoor threefilaments Thereare severalgroupsof
Hymen-optera besides the Ichneumons proper which are parasites.
Amongthese are the smallest ofall, the
Proctotrupidtz^or
Trang 31THE ORDERS OF INSECTS. at
TheAnts, Bees, andWaspsfrequentlyliveinlarge
communi-ties,inwhich case they are the most intelligent ofallinsects
The workof thenestsisaccomplishedby undevelopedfemales,
called neuters,which formthebulkof thecommunity
Inants,the neuters are wingless, and the males andfemalesonly acquirewingsfor their "marriageflight," after which the
their numerousenemies, either return to established nests, or
becomethe foundresses ofnewcolonies Antsarefarmore
so-called "White Ants," or Termites, which have very similar
habits,butarestillmoredestructive,thoughhappily notBritish,
formnests inwoods,fields,or gardens,and onelittleyellow ant
{Myrmica Domestica)is common in houses, where it is
some-times very annoying from its numbers Like nearly all ournoxiousinsects,it isanimportationfromabroad,andwasalmost
unknownfiftyyears ago. Itisbelievedtobea Brazilianspecies,
calledhoney-dew, which exudes fromthe bodies of Aphides, or
plant-lice These they sometimes keep in their nests,
some-times tendon the plants where theyfeed,and sometimes even
superintendtheirbreeding Manyotherinsectsarelookedafter
byantsina similarmanner,or arefoundintheirnests;andit is
noexaggerationtosay that ants possess a much greater variety
metamor-phoses ofants, I willonly say herethatthey aremostassiduous
Trang 32THE ORDERS OF INSECTS.
in their attentions to theirprogeny, andthattheso-called
Thesolitary wasps and bees form nests in loose earth, or
thespecies, andprovisionedbythebeeswithhoney,andby the
amanneras todisablewithoutkillingthem, sothat a store offreshprovisionsisalwaysreadyforthe younglarvae when theyhatch
IntheHumbleBees(Bomfais)wealreadyfindsmall
communi-ties,consisting of perhapsahundredindividualslivingtogether.
muchinsize,somebeingtwice aslarge as others.
TheSocialWaspsbelong to the genus Vespa, the species of
toeachother They maketheir nestsofa material resemblingpaper,either inthe ground,underthe eaves of a house, or sus-
\Vespa Crabro], generallyformsitsnestin a hollowtree. Itis
about twice thesizeof the other wasps, butmuch less common
inmostparts ofthiscountry, anditsnestsare much less
popu-lous
wasps'nests,yetevery colonyisfoundedbyasinglefemalewhich
has survived the winter Having constructed thebeginning of
anestbyherself,she continues her laboursuntilsheisjoinedby
provisionsandtend theyoung,until winter sets in. Then the
and arethemselves speedily killed by the increasing cold A
few females only survive the winter in a torpidstate, to form
freshcolonies next year. All the wasps which we see flying
thesewaspsin spring
The common Honey Bee or Hive Bee (Apis Mellificd) is
scarcely to be considered wild,and has been introduced into
every part of the world Ahive of bees contains one female,
of neuters, or workers, whose office it is to tend the larvae
and
pupae,constructthecombs, and provide food for the
Trang 33com-THE ORDEXS OF INSECTS. 23
munity Thequeencannot bear arival; and wheneveraqueen
vivor becoming queen of thehive But in spring, when the
huff, attended by a numerous escort; and these become thefounders of anewhive Thisiscalled"
swarming."
TheLepidoptera, orScale-wingedInsects,include the
Butter-flies and Moths They havefour wings, clothed with a fine
the microscope, to be composed of elegantly formed scales.Theyare classifiedprimarilyby differences in the structure of
their legs,wings,andantennae Butterfliesflybyday,and have
ample, gaily coloured wings,andamoreorless abruptknob at
theendoftheirantennae Manybutterflieshavethe front legsmoreorlessaborted,anduseless forwalking Asexamples,we
butterflycommon in fields in summer, which has an eye-likespot near thetipof thefore wings, surrounded with fulvous inthe female; theSmallTortoiseshell (Vanessa Urtica?)>a reddish
butterfly, with black spotsontheforewings,andablack border
SmallTortoiseshell(VanessaUrticaf}^naturalsize.
spotted with blue round all the wings; and the Fritillaries,
with silvery spots on the underside of the hind wings. Allthese are rather largebutterflies, measuring aninch and a half
ormore across the wings; some of the larger Fritillaries
ex-pandnearly threeinches Ourmostdelicatelyformedbutterflies,
over flowers inwasteplaces,onlymeasure aboutan inch across
Trang 3424 THE ORDERS OF INSECTS.
the wings Theyareparticularlyabundantinchalkylocalities;
and, notwithstandingtheirsmallsize,are very pugnacious, often
SmallCopper(Lyceena Phlceas), naturalsize.
driving other insects away when they approach the floweron
sulphur-yellow colour, as its name implies, is very common
inwoodsin England, though almost unknownin Scotland orIreland; itappears very earlyinthespring, andis tobe found
Large WhiteButterfly (Pierls Brassicce),naturalsize.
on each wing, and thus differs from its allies, the White CabbageButterflies (Pieris),three species ofwhicharecommon
inour gardens,wheretheir caterpillarsfeedoncabbage,etc
TheSkippers are smallbutterflies, aboutaninch in expanse
They have rather thick bodies, large heads, and a rapid but
somewhatirregularflight. Mostofthe species are brown withfulvous markings, but the Grizzled Skipper (Hesperia Malv<z}
is black, chequered with white They frequent woods and
Trang 35THE ORDERS OF INSECTS. 2$
Wehaveonlysixty-five differentspecies of butterfliesinland,butabouttwo thousand moths Outofthislargenumber,
Eng-only afewcan herebementioned
LargeSkipper(PamphilaSylvanus), naturalsize.
TheSphingidtz are large moths, withthe antennae thickened
inthe middle, long and rather pointed fore wings, and shorthind wings Severalspecies, astheEyed Hawk-Moth, are very
beautifulmoths ThelargestofourBritish insectsisthe Death's
Head Hawk-Moth (Acherontia Atropos\ whichexpands about
fiveinches Ithas dark-brown fore wings, varied with paler,
andstraw-colouredhindwings, withtwoblack transversestripes.
body,is often found in potato-fields inautumn; but the
Hum-mingBirdHawk-Moth(Macroglossa Sfellatarum],whichhovers
Trang 36THE ORDERS OF INSECTS.
over flowersbydayaswellas atdusk,ismoreoftennoticedthan
anyother species ofthis family
TheSix-spotBurnet Moth (Zygcena Filipendulae]iscommon
inmeadowsinsummer Ithas very thick antennae, and
mea-suresaninchormoreacrossthedarkgreenishforewings,which
are marked with six bright crimsonspots arranged in pairs;
heavilybyday,anditslarva constructs atough yellowish
Five-spot BurnetMoth{ZygienaTrifolii),naturalsize.
Five-spotBurnetMothisverysimilar,butlessabundant
evening Itmeasures abouttwoinches across the wings,which
are long,andcomparatively narrow. Themale iswhite above,
andbrownbelow; while the female has yellowfore wings with
red markings, anddullreddishhindwings.
TheGold-tailandBrown-tail Moths (Portlicsid) are common
Brown-tailMoth(Portheshi Chrysorrhcea\ naturalsize
quarter across the wings,whichare snow-white, generally with
have a large tuft ofdownatthe extremity of the body, which
thefemale plucksofftocoverhereggs.
wings,whichare black, withirregularwhitestripes. The hind
Trang 37THE ORDERS OF TXSECTS. 27
or black white-tippedhair Itrolls itselfintoaball when
dis-turbed,andfeedsonavarietyoflowplants.
YellowUndervving (Triphcena Orbona), naturalsize.
The dull-coloured moths, with stout and moderately longbodies,whichflyingardensin the evening, represent the night-
speciesdomuch harm bydevouring the roots ofplants. But
they are not all dull-coloured, thus theYellow Underwing
(Triphccna Orbond) has brownishfore wings and yellow hindwings, with a black band near the hind margin; it expands
MagpieMoth(Abraxas Grossulariata), naturalsize.
The Magpie Moth (Abraxas Grossulariata)maybe takenas
the representative of another extensive group of moths, the
Geometridce It isoften found in gardens, and has a slenderyellow body, spotted with black, and broad white wings, ex-
with black and yellow, andthe hind wings with black Itscaterpillar feeds on currant, and, like all of this section, hasonly ten legsinstead ofsixteen, thefirst two pairs of the ab-
Trang 38THE ORDERS OF INSECTS.
in apeculiar manner, forming an arch with its body at every
movement.
amongnettles,maybe takenasa representative of the Pyralida
trans-verserowsof large blackish spotsonall the wings;the thorax
and base of the fore wingsare yellow, the formerwith a few
dis-lodge ashowerofsmall moths, about three-quarters ofan inch
inexpanse, withbroad greenforewings,andbrownhindwings.This is Tortrix Viridana, and belongs to the Tortricida, alargegroupofsmall mothswithbroadforewings, whose cater-pillars feed in the rolled-up leaves ofplants, orelse in fruits,seeds,flower-heads, etc.
The Tineid<Z) to which the ClothesMoths belong, are the
most extensive groupof the British Lepidoptera, ofwhichtheyform nearly a third They are all small moths, some verysmall, manymeasuringonly a quarter or halfaninch across the
ClothesMoth(Tinea Tafetzella), naturalsize.
wings Their wingsare generally longandnarrow,andfringed
withlonghairs Notwithstandingtheirsmallsize,manyspecies
the Adelid<z, includes green or brown species, with very long
antennse,which in somecases areat leastaninchanda halfin
length,and doubletheexpanseof thefore wings Manyof the
larvaeof the Tineidafeedinside leaves,wheretheyformblotches
orgalleries.
The Plume Moths(Pterophondce) generallyexpand nearlyan
inch,andthe wings arecleft intoseparate feathers;two, more
or less united,onthe forewings, andthreeon the hind wings.
IntheAlucitidceeach wingis cleftinto six distinct feathers; but
we
Trang 39SaturniaPavonia Minor.