Coenosia nigriceps Xue et Wang, 2014

Xue, Wanqi, Wang, Ping & R, P., 2014, Diagnosis Of The Coenosia Mollicula-Group (Diptera: Muscidae), With Descriptions Of Five New Species From China, Acta Zoologica Academiae Scientiarum Hungaricae 60 (2), pp. 157-172 : 169-171

Coenosia nigriceps Xue et Wang , sp. n.

(Figs 27–31)

Holotype: China, Pianmatown , Lushuicounty, YunnanProvince, 3153 m, 10. vii. 2009, collectedbyWenxiuDong.

Male: Bodylength 4.4–4.6 mm.

Head: Eyebare, lowerposteriormarginnotconcave; fronsabouthalfofheadin width; fronsandfaceblack; lowermarginoffronto-orbitalplate, parafacialandgenawith goldpruinosity; frontalvittaabout 2.5 timesaswideasfronto-orbitalplate; frontaltriangle reachingmiddlepartoffrons; lunuleblackbrown, sparselycoveredwithgreypruinosity; ocellarsetashort, aslongas 4/5 offronswidth; innerverticalsetaabout 5.0–6.0 timesas longasouterverticalseta; 4 pairsof fr, theupperpairlongandstrong, lowerpairshort; orbitalseta 1, slightlyshorterthanocellarseta; parafacialatmostequalto 2/5–1/2 ofpostpedicelwidth; antennablack; postpedicelabout 2.5 timesaslongasbroad, distalpartof postpedicelrotundity; aristaentirelycoveredwithshorthairs, thelongesthairssubequal tobasaldiameterofarista; epistomaslightlyprojectingbeyondfrontalangle, frontalangle situatedinfrontofvibrissalangle; genaabout 1/3–2/5 ofeyeinheight; genalhairs, epi- cephalonhairsandpostgenalhairsblack, occiputwithgreen- greypruinosity; prementum blackandshining, about 3.5 timesaslongasbroad; palpusblack, atleastequaltopremen- tumlength; labellumabout 1.2 timesaslongaswidthofprementum.

Thorax: Groundcolourblack, lateralsurfacewithgreen- greypruinosity; anterior halfofanepisternumwithorange- greypruinosity; scutumwithorange- greypruinosity; notopleuronwithblue- greypruinosity; scutellumblack, lateralsurfacewithblue- grey pruinosity; scutumwith 3 blackbrownvittae, reachingposteriorhalfofpostscutum; 2 rowsof acr ashairs; dc 1+3; posthumeralseta 1+0; ial 0+1; without pra; notopleuronbare; basalscutellarsetaandapicalscutellarsetalargeandlong, lateralsurfaceandventralsurfaceofscutellumbare; proepisternumandbasisternumofprosternumconcaveincenter; anepimeron, meronandkatepimeronbare; proepisternalsetae 2; upperproepimeralsetae 2; anterioranepisternalseta 1; anteriorspiracleandposteriorspiraclesmall, darkblack; katepisternalsetaeplacedasanisoscelestriangle.

Figs 27–31. Coenosianigriceps sp. n., male: 27 = dorsalviewofabdomen, 28 = lateralview ofabdomen, 29 = sternite 5 inventralview, 30 = posteriorviewofcerci, 31 = terminaliain profile. Scales: 0.5 mm for Figs 29–31, 1 mm for Figs 27, 28.

Wings: Hyaline; veinsbrown; basicostablack, spinulerowoncostadistinct; costa reachingthetipofM; costalspinesubequalinlengthtor-m; calyptersyellowish; lower calyptershortandstrap-like, about 1/3 ofuppercalypterinlength; haltereyellowish.

Legs: Black, foretibiawith 1 median p, longandlarge, about 2/5 oftibiainlength; midfemurwitharowof av andarowof a inbasal 2/3, submedial pv longandlarge, about 1/5 offemurinlength, median pv aslongasfemoraldiameter, supramedial pv long, 1–2 short pv inbasalpart, 1 preapical a, slightlythin, 2 preapical pd; midtibiawith 1 median ad, longandlarge, 1 supramedial pd, longerthan ad, about 1/3 oftibiainlength, without pv; hindfemurwith av rowinbasalhalf, about 4–5, aslonghairs, with pv rowinbasal 3/5, about 7–8,4–5 inbasalpartasafringe; hindtibiawith 1 submedial av, 3 ad, 1 preapical d, 3 pd; apicalpartoftarsinotwidened, fourthtarsomereshortenedlikeaglobe, tarsishorter thantibiae; clawslongerthanpulvilli, about 5/6 offifthtarsomereinlength.

Abdomen: Groundcolourblack; long- oviformindorsalview, lateralsurfacewith blue- greypruinosity, eachtergitewithdarkgreypruinosityinposteriorpart, withoutdis- tinctlateralspots, denselycoveredwithshorthairsondorsalsurface, lateralsurfaceand ventralsurfacesparselycoveredwithlonghairs; discalsetaedistinct; sternite 1 bare, sternite 5 situatedonmiddlepartofabdomen, distinctlyprojecting, laterallobewithalong fringe, surstyliandcercislender, surstylislightlyshorterthancerciindistalpart, apical hookofsurstylibentbackwards, postgonitewithmembraneouslobe.

Female: Unknown.

Etymology: Thisspeciesnamereferstotheblackmalefrons.

Diagnosis: Thisspeciesresembles Coenosiayulongxueshanensis Xue, 2005, butitdiffersby 4 pairsof fr, frontalvittaabout 2.5 timesaswideasfrontoorbitalplate, distalpartofpostpedicelrotundity, aristaentirelycoveredwith shorthairs, thelongesthairssubequaltobasaldiameterofarista, ial 0+1, scu- tumwith 3 blackbrownvittae, proepisternalsetae 2, lowercalyptershortand strap-like, about 1/3 ofuppercalypterinlength, foretibiawith 1 median p, midtibiawith 1 median ad.