The Genus Thinophilus Wahlberg, 1844 (Diptera, Dolichopodidae) From Eastern Palaearctic, With Description Of Two New Species And New Records
Author
Negrobov, Oleg P.
Author
Maslova, Olga O.
Author
Selivanova, Olga V.
text
Acta Zoologica Academiae Scientiarum Hungaricae
2016
2016-05-06
62
2
143
151
http://dx.doi.org/10.17109/azh.62.2.143.2016
journal article
10.17109/AZH.62.2.143.2016
2064-2474
5734543
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.
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.
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