Thinophilus ovtshinnikovae, Negrobov & Maslova & Selivanova, 2016

Negrobov, Oleg P., Maslova, Olga O. & Selivanova, Olga V., 2016, The Genus Thinophilus Wahlberg, 1844 (Diptera, Dolichopodidae) From Eastern Palaearctic, With Description Of Two New Species And New Records, Acta Zoologica Academiae Scientiarum Hungaricae 62 (2), pp. 143-151 : 146-148

Thinophilus ovtshinnikovae sp. n.

( Figs 7–8 )

Diagnosis. Fronswithgreypollinosity. Facewithgreypollinosity. Anten- naeblack. Aristasubapical. Palpuslight-yellowwithblackhairs. Mesonotum withoutblackspot. 5 pairsofdorsocentralsetae. Scutellumwith 4 lateralsetae. Legsyellow. Forecoxawithwhitehairs. 1stsegmentsofforetibianotcurved. Segmentsoftarsusnotwidened. Hindfemorawithshortanteroventralhairs.

Description. Male. Fronsgreenwithgreypollinosity. Facegreenwithgreypollipos- ity, widthatsutureisequaltothewidthofpostpedicel. Antennaeblack, aristablack. Ratio ofepistomelength, clypeuslength, facewidthatsutureandpalpuslength: 0.8/0.5/0.3/0.5. Aristasubapical, shortlypubescent. Postpediceltransverselyovalwithroundedapex, widerthanlong. Ratioofpostpedicellengthtowidthandaristalength: 0.4/0.5/2.0. Pedicel withoutprocess, projectingonpostpedicel. Proboscisbrown. Palpusshort, light-yellow withblackhairs. Postocularsetaewhitebelow.

Thoraxgreen. Mesonotumwithgreypollinosity, withtwolighterlongitudinalstrip, pleurawithdensegreypollinosity, withoutpurplespot. Propleuronwith 1–2 shortwhite hairs. Mesonotumwithoutblackspot. Acrostichalsetaeabsent. 5 pairsdorsocentralsetae. Scutellumwith 4 lateralsetae.

Legsyellow, mostofmidandhindcoxabrown, tibiadarkenedatapex. Forecoxa withwhitehairs. Forefemoraandtibiawithoutlongsetae. 1stsegmentsofforetibianot curved, withoutcrestoferectsetae. Segmentsoftarsusnotwidened, withoutsetae. Ra- tioofforetibiaandtarsus (from 1stto 5th): 3.1/1.7/0.6/0.5/0.3/0.3. Midfemorawithshort preapicalhairs, withoutlonghairsbelow. Midtibiawith 2 shortanterodorsalsetaeand 1 posterodorsalseta. Segmentsofmidtarsiwithoutlongsetae. 5thsegmentofmidtarsi widened. Ratioofmidtibiaandtarsus (from 1stto 5th): 4.1/2.2/0.9/0.7/0.4/0.4. Hindfemora withshortanteroventralhairsinupperthird. Hindtibiawithveryshortsetaeondorsal side. Segmentsofhindtarsiwithoutsetae. Ratioofhindtibiaandtarsus (from 1stto 5th): 4.3/1.9/1.0/0.7/0.4/0.3.

Wingdarkened. R4+5 andM1+2 slightlydivergentapically. M1+2 slightlycurved. Ratio ofcostalsectionbetweenR2+3 andRt 4+5 othatbetweenR4+5 andM 1+2: 1.4/0.9. Apicalpartof M3+4 longerthanm-cu – 1.0/0.7. Analangleobtuse. Lowercalypteryellowwithwhitehairs. Halteryellow.

Abdomenmetallicgreen, withbronzestripslaterally, withblackhairs, withgrey pollinosity. Epandriumnarrow, narrowedatapex. Surstylusshorterthancerci. Phallus annularcurved.

Female. Similartomaleexcept: facebroader.

Length: body 1.3 mm, wing 1.3 mm.

Typematerial. Holotype. m, China, 50 kmnorthofMukden, 20.07.1952 (Rubtsov), Paratypes: 1 m, 2 f, inthesameplace. TypesaredepositedintheZoologicalInstituteof theRussianAcademyofSciences .

Etymology. ThenewspeciesisnamedafterfamousspecialistinDipteraoftheZoo- logicalInstituteoftheRussianAcademyofSciencesOlgaG. Ovtshinnikova.

Differentialdiagnosis. InthekeytoPalaearcticspecies ( NEGROBOV 1971, 1979), thenewspeciesrunsto Thinophilusruficornis (Haliday, 1838) andcanbe distinguishedfromthelatterbyfollowingcharacters:

– Antennaeblack. Dorsalpartofepandriumwithdeepincisures. Surstylus slightlylongerthanwide. Phalluslongcurved, longerthanepandrium Thinophilus ovtshinnikovae sp. n.

– Antennaemostlyyellow. Dorsalpartofepandriumalmoststraight. Sur- stylus 2 timeslongerthanwide. Phallusshort, shorterthanepandrium Thinophilusruficornis (Haliday, 1838)

AccordingtokeyofYAnG etal. (2011), thenewspeciesrunsto Thinophilus seticoxis Becker, 1922 , areknownfromOrientalregionofChina (Taiwan) and Indonesiaandcanbedistinguishedfromitbyfollowingcharacteristics:

– Antennaeblack. Femorawithoutsetaebelow. Thoraxandabdomen green Thinophilus ovtshinnikovae sp. n.

– Antennaemostlyyellow. Femorawithsetaebelow. Thoraxandabdo- menpartlypurple Thinophilusseticoxis Becker, 1922

Figures

Figs 7–8. Thinophilus ovtshinnikovae Negrobov, Maslova et Selivanova, sp. n.: 7 = hypopygium, lateral, 8 = antennae. Scales: 0.1 mmforFig. 7, 0.5 mmforFig. 8.