Ceroptera inermis, Papp, LÁsZLÓ, 2014

Papp, LÁsZLÓ, 2014, A Review Of The Old World Species Of Ceroptera Macquart, 1835 (Diptera, Sphaeroceridae), Acta Zoologica Academiae Scientiarum Hungaricae 60 (2), pp. 109-155 : 136-139

Ceroptera inermis sp. n.

( Figs 64–70 )

Holotypemale ( BMSA, abdomenandgenitaliainapolyethylenemicrovialwith glycerol): Gorraspis 99, SE2515 Bd LÜDERITZ, 25–31 Jan 1974 – 2) – H 16974. The holotype isslightlydamaged, rightmidleglost, leftforelegandcoxa, rightmidtarsusandright hind leg kept in the plastic microvial .

Measurements in mm: body length 2.38 (holotype), wing length 2.06, wing width 0.85. Bodydarkbrown, almostblack, coveredbyverydenseshortdarkmicrotrichia. Anteriorpartoffronsanddorsalhalfofparafacialiadiffuselyreddish.

view. Scales: 0.2 mm for Figs 60–61, 63 , 0.1 mm for Fig. 62 .

Headextremelylong, 0.50 mm, facialplateform 2 cavitiesforantennae, mouthedge stronglyprotrudingandformsananteriorflatshieldmedially. Ocellarsetaeperpendicular to frons and divergent. The row of fronto-orbital setulae continued on all the height of parafacialiadownfomiddleofgena. Lunulalargetriangular, thoughantennalbasesnot stronglydeparted. Frontaltrianglelongtrapezoid, atlunule 0.13 mmbroad. Longitudinal axisofeye (almostparalleltofrons) 0.33 mm, width 0.21 mm, gena 0.23 mmbroadbelow eye, parafacialiaextremelybroad, 0.10 mmatnarrowest. 8 pairsofcomparativelylong interfrontals (c. 0.08 mm). Vibrissa 0.16 mm. Antenna longer than usual, dorsal length 0.23 mm, dorsalapicalsetaofpedicel 0.11 mm. Aristabroken, notmeasureable.

Posteriornotopleuralsetaonasmallswelling, 3 pairsofpostpronotalsetaeplusa shortpair. Only 1 pairofposteriordorsocentrals. Prescutellaracrostichalpair 0.07 mm. 1 verylong (0.23 mm) katepisternalseta.

Mid tibia with an anterodorsal seta at 34/48 and a very strong dorsal seta at 41/48; no othertibialsetae, exceptventralapicalone. Fifthforetarsomere (similarlytoFig. 64) long- estlaterallyandlongerthan 3 + 4 tarsomerescombined. Forebasitarsuswithatuftoflong hairsventrally. Hindtibialapicalspur 0.06 mm, anteriorapicalsetaonhindbasitarsus 0.06 mm. Hind 5thtarsomere ( Fig. 64 ) withlonglateralapicallobes, clawsnotlongandvery thin, analmoststraightsetiformempodiumdiscerniblebetweenthem. Pulvillinotlarge withdensefinehairs.

Wingmembranegreyishyellow, veinsochre, costalveinslightlydarker. Costalvein overruns apex of R 4+5 by c. 0.07 mm, R 4+5 ends before wing apex by 0.23 mm. Costal vein with 2 subbasal setae shorter than 0.10 mm. Second costal section 0.65 mm, third section 0.44 mm, index 1.49. Rs 0.20 mm, inter-crossvein section of M 1+2 0.22, terminal section 0.88 mm. M-M crossvein 0.14 mm. Distance of discal cell lower edge to wing margin 0.44 mm, ofwhichmorethanhalfiswiththeveinstub, althoughmostlycolourless. Halterelarge, slightly more than 0.3 mm, light brown.

Preabdominal abdominal sclerites not reduced. Syntergite 0.26 mm long, 0.44 mm broad, alargermedialpartofT1 portionunpigmentedandmostlydesclerotised, alsoT2 portion depigmented centrally, except for a 0.03 mm long caudal part. Sternite 2 unusuallysmall. Measurementsofthepreabdominalsclerites (breadthintheirslightlycurved original position, 1 unit = 0.0125 mm): T3 13 × 29, T4 11 × 27, T5 10 × 21, S2 6 × 8, S3 13 × 25, S4 17 × 32. Tergites as broad as abdomen at their place. Sternites 3 and 4 shield-shaped ratherthanquadratic, sternite 4 wouldbebroaderthanabdomenifflattened. Sternite 5 verybroadasymmetricalandcomparativelyshort ( Fig. 65 ), mainpartwithlonglateral marginalsetae, particularlysoontherightside; medialpartbroadlypronounced, seemingly with an asymmetrical sclerite covered by short but thick setae. Sternite 6 portion of synsterniteveryshort, sternite 8 portion 0.15 mmatlongest. Rightsidescleriteslargeand partlyfusedtosternite 5 .

Epandrium normal, medioventrally fused on a c. 0.03 mm long section, to which also subepandrialscleritefused. Thislatterisenlargedventrallytojoincerci. Cercus ( Fig. 66 ) notsmallbutveryshortsagittally. Posteriorlobeofsurstylus ( Figs 66, 69 ) verylong (high) with very short setae only. In its basal 2/3 length it is fused to anterior lobe of surstylus; this fusionismembranousbutstrong. Anteriorlobeofsurstylus ( Fig. 69 ) longspoon-shaped (withacavitymedially), apicalpartbroadandanteriorlycurved, withseverallongsetae, of which 4 caudal setae of 0.09 mm long. Central part of hypandrium ( Fig. 67 ) is a 0.15 mm long fork, joining postgonite and short thin arms of hypandrium. Phallapodeme ( Fig. 70 ) thinnormal, 0.24 mmlong. Basiphalluswithalargeepiphallus ( Fig. 70 ), distiphallusvery thinandweaklysclerotised. Postgonite ( Fig. 68 ) comparativelyverylarge, broadalsoapicallywithanteriorlyserrate, bluntandanteriorlydirectedapicallobe.

Femaleunknown.

p: pulvillus). Scales: 0.2 mm for Figs 64–66, 69–70 , 0.1 mm for Figs 67–68 .

Etymology. The specific epithet of this new species refers to the limited number of tibialsetae (Latin‘inermis’ = unarmed).

Remark. C. inermis sp. n. isalessconspicuousmemberofthespecies- rich groupofsmall- bodied Ceroptera specieswithasinglepairofprescutellardorsocentralsetae. Thisnewspecieshasparticularlylonghead, itsparafacialiais definitelybroaderthanitspedicel. Itsmalesternite 5 andgenitaliaareprob- ablythesimplestinthegroup, althoughtheyarecharacteristicenough.

Figures

Figs 64–70. Ceroptera inermis sp. n., male: 64 = hind 5th tarsomere, ventral view, 65 = sternite 5, ventralview, 66 = cerciandsurstyliwithsubepandrialsclerite (covered), caudalview, 67 = hypandrium, ventral view, 68 = postgonite with medial part of hypandrium, lateral view, 69 = leftsurstylus, lateralview, 70 = phallusandphallapodeme, lateralview (e: empodium,

Figs 60–63. Ceropteraglobosa sp. n., malegenitalia: 60 = epandrium, cerciandsubepandrial sclerite, caudalview, 61 = phalluswithejaculatoryapodeme, lateralview, 62 = medialpart ofphallusinhighermagnification, lateralview, 63 = postgoniteandphallapodeme, lateral