Some Spiders from South Annam.

he spiders described below were collected by Mr. C. Boden Kloss in the course of a jouiney among the hills in S. Annam, in the spring of 1918. He has very kindly sent them to me for identification. he spiders described below were collected by Mr. C. Boden Kloss in the course of a jouiney among the hills in S. Annam, in the spring of 1918. He has very kindly sent them to me for identification.

ON SOME SPIDERS FROMSOUTH ANNAM 285

14 Some Spiders from South Annam.

By H n Hogg, M.A., F.Z.S

[Received February 17, 1922 : ReadMarch21, 1922.]

(Text-figm-es 1-10.)

Kloss in the courseof a joui-neyamong the hills in S.Annam,

in the spring of 1918 Hehas very kindly sentthemto me foridentification

Family Aviculariid^e.

Genus MacrotheleAuss

Macrothele maculata Thor.,var annamensis, var nov

Dr Thorell described asa newspecies, namedas above,a adult female fromJava, placing it in C Koch's genusDiplwa.Thereisno doubt about it belonging to the present genus Ofthe two specimens here recorded, one is probably adultand theothercertainly not TheyagreecloselywithThorell's description,

non-with the exception thathisspecimen hadtwo rowsofwhite spots

on the back on a black ground, while in these the spots arewanting

He further states that the eye area is 2-1-times as broad as

space betweenthe frontandrear rowshasslightlywidened As

merely deemed this avariety, due to thewant of spots, instead

of, as it would otherwise have to be, a new species There aretwofemalesfrom LangbianPeaks, S. Annam, 6500 ft.

Family Zobarid^.

SubfamilyStorenomorphin^.

Genus Storenomorpha Sim

Storenomorphacomottoi Sim

Theminute third claw is littlemorethana platewitha small

all. All three claws spring from a hollow at the end of the

joint.

Subfamily Zodauiin^

Langbiana, gen nov

This genusdiffers from Diores Sim inhavingthe medianeyearea as broad as or sliglitly longer than broad The row of

spinousbristlesonthe tibiaand distal joint ofthe female palpis

Langbianaklossi, sp n.

Thecephalicpartofthe cephalothoraxand mandibles aredark

red The thoracic part, lip, maxillte. sternum, legs, and palpi

bright orange The abdomen above is black-brown,with twolongitudinal lines ofyellow-greyspots, five in each, to near the

On the underside it is yellow at the baseas far as the genital

yellow-greylongitudinal lines,some seven in number, reaching to the

Text-figure 1.

«, eyes; &, lipandmaxillae ; c, epigj'ne : d, spinnerets from under side In a the

front laterals should be lowerdownandrather nearer themedianthan drawn.

Both rowsof eyes are procurved, the laterals of theposterior

rowhaving their uppermost points on a line with thebottomof

themedian, and the iipperpoints of the front laterals in a line

The eyesof the rearrow and thelateralsof the frontrowareeachabout two-thirds the diameter of the front median The

the rear median, which are their own diameter apartand twice

SPIDERS FROM SOUTH ANNAM 287The front laterals are their diameter distant from their

median

Theclypeus isoneand a half times longer than the medianeye-areaandperpendicular

arebroadatthe base; the fangssliortand stout

Thelip islongerthan broad,roundedanteriorly,three-fourthsthe heightof themaxilles The latterbend overthe lipand areconvex, not atall impressed

Thesternumis shield-shaped, truncate anteriorly, Htimes as

longasbroad,rounded at theposteriorend,but not protrudingbetweenthe rearcoxafi, whichare ratherwideapart

The abrlomen is ovate, broader in front than at the rear,

rounded atthe sides. Attheposteriorend on theundersideisatransverse row of short spines in front of thfe spinnerets Ofthese the inferior are cylindrical, raised on a membranous

Tlie superior are similar, but half as long and only half thediameter,standing farther apart The epigyne consists of two

above each

isa thickbunchof spinousbristles. Thetarsal jointsof the 2nd

the metatarsal Theclaws are two, with about six pectinations,

and springfroma shortonychium

Themeasurements in millimetresare as follows:

Family T heri D1 1d.-E,

Argyroelos,gen nov

smaller than the laterals and the median eye-square narrower

nearly meet oneanother

Argyroelos micans, sp n.

The cephalothorax, mandibles, lip, maxillae, and coxre are allbright orange The sternum somewhat yellower, legsand palpi

abdomen is jet-black, with a, mottled white streak across the

diamond-shaped spot betweenthe latter two; the under side is

orangeand spinneretsdull brown

Text-figure 2.

Argyroelos micans, gen et sp ii.

«, eyes ; I), epigyne ; c, lipandmaxillae ; d, tarsus iv.

Thecephalothoraxis 1^millimetres longerthanbroad,roundedand narrowed in front and to aless degreeat therear,i-ounded

behindthe sideeyestoa broad but shallow transversedepression,

fromtheends ofwhichtwoturn rearwards

Therearroweyes areveryslightlyrecurved, equalindiameter,the median pair being 1^ of their diameterapartand U of thesame from

SPIDERS FROMSOUTH ANNAM 289front laterals, on a joint tubercle The front median eyes are

therearmedian,slightlymorefrom one another,and ]^ diameter

of veryfine bristleson rootsscattered at intervalsonthecephalic

The lip is about 2| times as broad as long,curved in front,

three times as high as the lip, over which they bend, nearlymeeting one another, with straight edges on the upper part of

middle ofthe outerside.

Thesternum is a longshield-shape, curved in frontround thebases of the lip and maxillas, and passing in a narrow pointbetweenthe rearcoxa?.

The abdomen is oval, smooth, slightly protruding over thecephalothorax On the upperside it is sparselyfurnished withratherlong,fine bristles, on the under side similar but shorter

The epigyne consists of a lunate flat shelf protruding from akidney-shaped convex area, which fills the median part of theformer The spinnerets are not quite tei'minal, on chitinous

The legs are moderately long and fine, wuthout spines, themetatarsal joints longer than the tibial. The two uppertarsal

claws are bentat the anterior end, withabout five pectinations

Themeasurementsin millimetres areasfollows:

One female from Dalat, Langbian Mountains, S. Annam,

5000ft.

this from Argyrodes, which it resembles in mandibles, lip, long

Family Argiopid^.

Genus NephilaLeach

Kephilamaculata,

Araneamaculata Fabr Ent Syst.ii p.425(1793)

N.maculata, forma principalis, Thorell, Rag Austro-Mal iii.

p.145(1881)

Two femalesfrom Phanrang Province, S.Annam.

Genus Argiope And. in Sav

Argiope ^therea Walck Ins Apt ii p. 112 (1841)

3000 ft.

Genus Gasteracantha Sund

Gasteracantha pr^textata Walck

FamilyThomisid^.

Dl/EA SHIRLEYI,sp n.

Thecephalothorax is darkred, themandibles, lij), and maxillae

rather paler, the former with nea,rlywhite fillets on the outermargin of the falx-sheatji, thesternum darker red again Thefemora andpatellaeofthe fronttwopairs of legsaredarkbrown;

tarsus pale reddish brown, all with short, fine brown hairs or

yellow-bi-own

The abdomen above is dark browai, smooth, and shiny, with

smaller belowthem; nearer the posterior end a jmir of strokessloping outwards from the centre line. Across the posterior

end are three transverse dark brown corrugations, slightly

abdomen are similar longitudinal conjugations, which on theunderside between the spinnerets andthe genital groove sur

A

SPIDEKSFROM SOUTH ANNAM 2^1

pulmonary openings, the spinnerets of a similar colour areenclosedinacircularcorrugation Theshape isaboutoval.

Thecephalothorax isasbroad as long,truncate in front, where

it is less than one-half its greatestwidth,rounded at the sides.Its surface is roughly coriaceous, with a few bristles on roots

a, ej-es ; b,malepalp.

The mandiblesare short, straight,and about twice as long as

broad

The lip is as long as broad, rather broadlyrounded in front,half the length of the maxillse The sternum broad, heart-shaped, passing between the rear coxse, which are wide apart

The palp is of a normal type, an oval cushion witha flagellumrunning roundit.

Themeasurements inmillimetres areas follows:

One male from Dalat,Langbian Mountains,S.Annam, 5000ft.

from three females collected in Java and Sumatra, and may

proportion, neither does he mention the numerous corrugations

Pandercetes ochrea, sp n a, eyes.

orange

Tne legsare paleyellow, withsmooth white hairand ing brown bristles, very long brown spines, and greyscopulseon

upstand-SPIDKRS FKOM SOUTH ANXAM.

The upper side of allthe femoral joints are embellishedwithroundbrown spots inmore or lesslongitudinal rows

The upper side of the pale yellowabdomen is thicklycoveredwithsmooth whitehair, the underlying surface being dotted like

underside is somewhat similar,but the hair-covering is shorter

yellow

The cephalothorax and eyes are qviite typical of L Koch'sgenus

Thelip, broader than long, isnot quitehalf the length of the

are equal in size. Two on the outer margin are smaller, theloweronesmallestof all. Besidesthetarsal scopula,a rather thinone runs abouthalf-wayup the metatarsusofall legs.

Underneath the tibiaand metatarsusofeachlegare twopairs

of powerful spines 2| millimetres long besides others shorter

The claws are stoutandwellcurved, with fourpectinations

The abdomen is truncate in front and rather pointed teriorly.

pos-The measurements in millimetres areas follows:— .

In P.gracilisL K the firstpair of legs are longest, 7 \timesas

longasthe cephalothorax,and thereisa pattern ontheabdomen

In P plumosus Dol the legs are coveredwith thick bunches of

hairandfirst pair longest InP longipesThor the second pairare 9timesaslongas the cephalothorax In P.isopus Thor thefirst, second, and fourth pairs of legs are equal in length, only

4 timesas longasthe cephalothorax,and coloration muchdarker,

accordingly

?94 MR II R. HOGG ON SOME

Thereisone not quite adult female andonesmallei'from Dran

in the Langbian Mountains of S. Annam, taken at an elevation

The mandibles are orange The lip, maxillae, sternum, coxse,

and underside ofabdomen paler yellow The upper side of the

Text-figure 5.

/

Adrastis lashhroolci, sp n., $

a, ej'es ; h,malepalp ; c, epigj'ne.

TheFemale is darker on the main partof the cephalothorax,buta pale band runs round the margin,andthe brownpattern-markings are fainter The abdomen on the back is dark grey,

with three palespots at the basein a transverseline and a palegrey transverse line at rear, also many grey hairs among thedarker The undersideoftheabdomenisyellow-grey,withdarkgrey hairs mixedwith white; the scopula and claw-tuftsatrifle

Theepigyne brown

SPIDERS FROMSOUTH ANNAM 295The cephalothorax is half a millimetre longer than broad,rounded at the sides, truncate in front, curving inwards at

Therearrowofeyesisrecurved,themediansessile1^diameters

1^times as farawayas themedian are from one another Thefront rowareonlyslightly recurved,the laterals as large as the

median, Ig diametersapart, half that distance from thelaterals,

and 2 diametersfrom the rearmedian Theclypeusisaboutthedepth ofthe diameter ofthe rear medianeyes

The mandibles are conical, slightly kneed at the base, withthree equal teeth on the inner falx-sheathmargin and onequitesmallbelow them

The lip isconvex,as broad as long, roundedatthesides,

widest in frontand narrowed at the baseto one-half thewidth

in front

The sternum is as broad as long, rounded at the sides,

truncate in front, and thickly covered with upstanding bristlyhair

The legs are moderately stout, Avith finedownlyinghair,three

side of i, Scopulse on alltarsi and on metatarsus of i. andii.

Two claws with about 7or 8 pectinations On the tibial and

Theepigyneconsists of a pair of convex bean-shaped nences,placed longitudinally a short distance apart,narrowed at

promi-theupper endstoone-half thewidth atthebase Aboveeachof

promi-nencecoveredwith shortrough hair

In the Male the rear row of eyes is less recurved and theabdomennarrowerincomparison withits length

On theouterside ofthetibial joint ofthe palp isaratherlong,

hollowed, pointed apophysis, with three curved spines on theinner side. Afinepointed flagellumpassesabout half-wayround

the opposite side.

Themeasurements inmillimetres areasfollows:

more uniform colour, freedom from spots on the cephalothorax

the second pair isthelongest

Genus Palystes L Koch

underthefemoraandonthe scopul?©, otherwise yellow-brown.The abdomen is pale yellow, withfine, short, smooth, yellow-brown hair above and four muscle-spots rather darker in atrapezium, narrowestin front

Theundersideissimilarin colour,witha darkgrey triangularpattern between the genital fold and the spinnerets,and threelongitudinallines in the middle

The cephalothorax is highest just in front of the rear slope

narrowsin frontto one-half its greatest width The mandiblesare as longasthe frontis wide, per-pendicular, convex On theinnermargin of the falx-sheath are threelargeteeth followed by

smaller

diameter apart,and 14 of same from thelaterals, which are also

SPIDERS FROM SOUTH ANNAM 297

1| times wider in diameter; the front row is straight, themedian rather smallerthan the rear median, two-thirdsof their

diameterapart, and one-fourth of the same from their laterals,

which are as large as the rear laterals. They are 1| their

diameter fi'om the rear median The Avhole eye-space and the

The lip is broader than long, roundedin front, andlessthanone-half the lengthof the maxillas, which are upright, convex,truncatein front, and slightly hollowed onthe outer margin.The legs ai'e moderately stout and long The front femoi\a

havei,, ii., i.spinesontheupperside,none on theunder Onthefourth pair ii., i., ii., i. above The patellasare iinarmed Under

Text-figure 6.

Falystes ledleyi, sp ii.,$

a, Qyea ; h, male palp ; c, epigsnic.

the scopula reaches two-thirds the lengthof the metatarsus,onthe third and fourth pairs the whole distance Onthepatella

three long onthe outerside, two on theinner, and onthe distal

The epigyne consists oftwo kidney-shapedprominences, placed

pairof small ehitinouslobes atthe lower end

The Male is darker on the cephalothorax, the centre of thethoracic part black-brown, withthelower edge scolloped, and a

round the margin

298 MR H 11.HOGG ON SOME

in the middle, with a blunt point on the outsidecorner and asquare-topped projectionon the side nearest the joint. On theopposite side of the same joint are three long spines springing

Themeasurementsin millimetres areas follows:

Coxa.

44i4

2

Broad.

1010

Female

Tr.&fem.

141513145*

Pat.

&tib.

1820

le'

6

Broad.

l8|9i

11

1415

Therearetwo males and eight femalesfrom Dran,in theLano-

bian Province of fcS. Annam, from an altitude of'SOOO ft., and

Mr Kloss has alsosentme one maleandone femalefromKuala Lumpur, MalayPeninsula

The measurements, and manyother points, are very close to

those of Dr Thorell's P incanus from Borneo, but in that

in proportion in this species; the side-eyes of the rear row

havino-the rear row all nearlyequal,and the rear lateralsare on laro-e

'^

Genus Seramba Thor

Serambapicta? Thor

Onemale,notfully adult Dran, Langbian Mountains 5000ft.

Genus Ctenus Walck

Ctenus plavidus, sp n.

The ceplialothorax is briglit orange-yellow, with dark grey

The thoracic foveaisbrown

The eyes topaz-yellow, the rear median on black rims Themandibles, slightly darker, have long brown bristles and shortdownlying white hair, chieflynear the base; fangs red, fringesgrey

pale yellow with brown bristles and scattered dark grey hairs,

ratherlighteronthefringes ofthe maxillee Thelegsare

oran^e-Text-fififure 7.

o o

Ctenus flavidus, sp n., $ a, ayes; b, tarsus of iv leg.

abdomen is pale yellow on the upper side, paler still on theunder, withshortwhite hairs scatteredabout

Theceplialothorax istruncateand narrowedin front,graduallywideningatthe sides of the cephalic partandmuch rounded at

along the medianline, but slopes steeply to the side near themargin The mandibles are kneed at the base,the fangs lono-

teeth followedby one smaller, and on the outerthree

Thefrontmedianeyes aretwo-thirds the diameterof the rearmedian,and the small oval laterals of the frontrowhave their

upper edges on a line with the upper edge of the latter. The

median, andtheir lower edges areonaline half their diameter