Carebara terayamai, Bharti & Akbar, 2014

Bharti, H. & Akbar, S. A., 2014, New Additions To Ant Genus Carebara Westwood (Hymenoptera: Formicidae: Myrmicinae) From India, Acta Zoologica Academiae Scientiarum Hungaricae 60 (4), pp. 313-324 : 318-320

Carebara terayamai sp. n.

(Figs 7–9)

Typematerial – Holotype (majorworker) and 3 paratypes (majorworker): INDIA: Kerala, Periyartigerreserve, Thanikkudy , 9°.30`N, 77°.16`E, 1003ma.s.l., 15.x.2011, Winkler method (coll. ShahidA. Akbar ). Additional 2 paratypes (majorworkers): INDIA: Arunach- alPradesh, Lumla , 2800 m, 27.31°N, 91.43°E, 12.vi.2012 (coll. ShahidA. Akbar & Joginder Singh). HolotypeandparatypeinPUAC; oneparatypewillbedepositedinBMNH.

Description – Majorworker. Measurements (holotypeinbrackets): HL 0.52-(0.55), HW 0.43-(0.46), SL 0.22-(0.26), ED 0.03-(0.04), ML 0.10-(0.15), MSL 0.40-(0.45), PW 0.21- (0.24), PTL 0.13-(0.15), PPTL 0.09-(0.12), PTW 0.06-(0.10), PPTW 0.10-(0.12), PTH 0.11-(0.13), PPTH 0.08-(0.09), HHL (0.04), CI 82-(83), SI 51-(56), EI 7-(8) (n=4).

Headlongerthanbroad, rectangularinfullfaceview. Occipitalmarginstronglycon- caveinthemiddlewithoccipitalcornersalmoststraight, acutelyrounded, lateralsides convex. Mandiblewith 4-teeth. Medianportionofclypeusbroaddepressed, slightlydiver- gentforward, anteriormarginweaklyconcave. Antennae 9-segmentedwitha 2-segmented club, scapesshortandclavate; reachingupto 1/3rdofposteriormarginofhead. Eyeswith singlewelldevelopedommatidium. Inprofileview, vertexwithapairofwelldeveloped acuteandupcurvedhorns. Dorsumofheadconvex.

Promesonotumhighandroundlyconvex. Promesonotalsutureobsoleteonthedor- sum. Metanotumlessprominent. Metanotalgroovedeeplyimpressed. Propodeumwith posterodorsalcornersroundedtobluntlyangled, dorsumstraightandslopingdownrear- wards, declivitytruncatetonearlystraight. Petiolepedunculateanteriorly, ventralface straight. Petiolenodethickwithslopinganteriorandposteriorfaces, dorsumstraightto coneshaped. Postpetiolenoderoundlyconvexandlowerthanpetiolarnode. Indorsal viewpostpetiolarnodebroaderthanthepetiolarnode.

Mandiblesandclypeussmoothandshiny. Headfinelyandlongitudinallystriated anteriorlyandposteriorly, smoothinthemiddlewithfewlongitudinalstriations. Transversestriationspresentbetweenvertexalhorns. Mesosomasmoothandshining; lateral sidesofpropodeumpunctuate. Petioleandpostpetiolefinelypunctured. Gastersmooth andshining.

Headandbodywithabundanterecttosuberecthairs. Scapesandtibiaewithdense decumbentpubescence.

Bodybrownishincolour. Headandgasterdarkerthanrestofbody.

Etymology. ThespeciesisnamedafterMamoruTerayamaforhiscontributionstoant systematics.

Differentialdiagnosis. C. terayamai sp. n. iscloseto C. sauteri (Forel, 1912) ,

however, thetwospeciescanbeeasilyseparated. Incaseof C. terayamai posteriormarginofheadisstronglyconcave, cephalicdorsumpredominantly sculpturedwithlongitudinalandtransverserugaepresent, posterodorsalcor- nersofpropodeumformingananglenotrounded, postpetiolebroaderthan petiole, proandmesonotaldorsumstronglyconvexinprofile, subpetiolar processwithoutasmallblunttuberclewhilstincaseof C. sauteri posteriormar- ginofheadisshallowlyconcave, cephalicdorsumismostlysmoothwithfew transverserugaeonvertex, posterodorsalcornersofpropodeumrounded, not forminganangle, postpetioleasbroadaspetiole, proandmesonotaldorsum moderatelyconvexinprofileandsubpetiolarprocessbearingasmallblunt tubercle. Thenewspeciesisalsosimilarto C. dentata BhartietKumar, 2013. However, thetwospeciescanbeeasilyseparated. Incaseof C. terayamai posteriormarginofheadisstronglyconcave, vertexalhornsarewelldeveloped, cephalicdorsumismostlysculptured, metanotalgroovedeeplyimpressed andbodyisdull, notshinywhilstincaseof C. dentata posteriormarginof headisweaklyconcave, vertexalhornsarereduced, cephalicdorsumismostly smooth, metanotalgrooveislessdeeplyimpressedandbodyisshining. C. terayamai alsosharesaffinitieswith C. rectidorsa (Xu, 2003) butthestrongsculp-

Figs 7–9. Carebara terayamai sp. n., major worker: 7 = head in full- face view, 8 = body in lateralview, 9 = bodyindorsalview.

tureoverwholedorsumofhead, vertexwithwell- developedhornsandposterodorsalcornerofpropodeumclearlybluntlyangled.

Ecology. Thisspeciesseemstobeinfrequentinoccurrence. Specimens werecollectedbyWinklerextractionmethodfromThanikkudyregionofPeri- yarTigerReserveandLumlaregionofArunachalPradesh.