Platypalpus bohousi, Barták & Kubík, 2018

Barták, Miroslav & Kubík, Štěpán, 2018, Hybotidae (Diptera) from Turkey, with descriptions of seven new species, Zootaxa 4410 (3), pp. 453-482 : 457-459

Platypalpus bohousi sp. nov.

( Figs 8–11 , 29 )

Type material. HOLOTYPE ♂, labelled: “ TURCIA MER., 10 km E Mut, Bogcagiz 800 m, pine f. [= forest] + pasture, B. Mocek 1.v.1996 ” ( CULSP) . PARATYPES: 1♂, 1♀, same data as holotype ; 1♀, Turcia mer., 10 km N Silifke Yenibahce 600 m, mixed forest, B. Mocek 1.v.1996 — CULSP and MHK.

Diagnosis. Very small black species of the P. hackmani group with 2 pairs of vertical setae (inner inclinate, outer lateroclinate); antenna with basal two segments yellow, postpedicel black and broadly ovate; thorax entirely microtrichose including katepisternum, large setae dark; legs yellow with only last segment of all tarsi contrastingly black in male (less so in female), mid femur with distinct ventral spines, midtibial spur absent, lacking posteroventral setae on mid femur; abdomen microtrichose; left epandrial lamella shallowly excised.

Description. Male. Head black, grey microtrichose. Frons about 0.07 mm broad ventrally (wider than pedicel) and widening dorsally (about 0.12 mm broad on upper part at level of anterior ocellus). Face about 0.05 mm broad at middle (slightly shrunken in all specimens). Gena broad and microtrichose. Antenna ( Fig. 8 ) with basal segments yellow to dirty yellow, postpedicel and stylus black; postpedicel broadly ovate, about 2.5–2.9X longer than broad, stylus slightly shorter than postpedicel. Clypeus microtrichose. Palpus brownish yellow, narrowly ovate, half as long as labrum, with 1 long dorsal and another shorter subterminal brownish yellow setae. Ocellar setae dark brown, about 0.12 mm long, otherwise ocellar tubercule with only two pairs of minute setulae. Two pairs of black, long vertical setae (outer lateroclinate as long as ocellars, inner inclinate even longer), inner verticals inserted wide apart (0.23 mm). Occiput sparsely setose, dorsal setae brown, ventral white and comparatively short. Proboscis black, slightly less than half as long as head height. Thorax black, entirely grey microtrichose including katepisternum. Large setae black to brown, small setae brown, proepisternal seta pale. Chaetotaxy: postpronotal seta very long and inserted posteriorly, two additional rather strong setae on anterior part of postpronotum; acrostichals biserial (about 8 setae in a row), 0.06 mm long; dorsocentrals irregularly uniserial, last 3–4 pairs long (anterior one situated in about middle of mesoscutum); posthumeral seta present and long, notopleuron with two long setae and 2–4 additional smaller setae; 1 short supra-alar; 1 postalar and 1 pair of long scutellar setae (with additional pair of small hairs laterally). Wing clear with yellow veins, R4+5 and M1+2 evenly slightly diverging basally and almost parallel apically. Crossveins very narrowly separated. CuA2 slightly recurrent and slightly bowed, anal vein depigmented and indistinct in basal portion. Costal seta brown and very long including additional smaller setae. Squama pale yellow with pale fringes. Halter whitish yellow. Legs yellow, last segment of all tarsi contrastingly black except basal third to fourth. Coxae with yellow setae, those on fore coxa very long and strong. Fore femur thickened, covered with short brown setae, preapicals slightly longer, anteroventrals short and pale, brown posteroventrals up to half as long as femur depth. Fore tibia slightly thickened, short and mostly pale setose. Mid femur much narrower than fore femur, with 2–3 brown anterior setae on apical part, preapical one long and strong, no posteroventral setae, ventrally with only posterior row of brown spine-like setae in basal third up to 0.05 mm long, shorter and paler apically. Mid tibia narrower than fore tibia, with single submedian anterodorsal black seta, ventrally with short black spine-like setae more distinct in apical half, no apical spur. Hind femur short setose ventrally. Hind tibia with two rather long and black anterodorsal setae, in submedian and preapical positions. Abdomen brown, rather sparsely grey microtrichose, tergites in some lights subshiny, genital lamellae partly lustrous. Abdominal setae mostly brown to brownish yellow and short. Genitalia ( Figs 9–11 ) small, left epandrial lamella ( Fig. 11 ) elongate and distinctly excised apically; cerci ( Fig. 10 ) simple and digitiform; right epandrial lamella ( Fig. 9 ) elongate-ovate and internally short setulose. Female. Similar to male except darker legs: fore and mid femora brownish yellow and hind femur almost brown, darkening of last tarsal segments not so strongly contrasting as in male. Two rows of ventral spines on mid femur more distinct, black even in anterior row. Length: body 1.9–2.1 mm, wing 1.9–2.0 mm.

Etymology. The species epithet, bohousi , is a Latin genitive patronym to honor our friend and collector of type series, Bohuslav (familiar form = Bohouš) Mocek.

Distribution. Turkey, Mersin province.

Remarks. The species described above is allied to other species of the P. hackmani group with microtrichose abdomen and yellow basal antennal segments: comprising P. dursuni sp. nov., P. nanus (Oldenberg, 1924) and P. hallensis Grootaert & Stark, 1997 . These four species differ in shape of the postpedicel which is narrow and 3X as long as wide in P. hallensis , and broader in the remaining species: 1.5X as long as wide in P. nanus and 2.3–2.9X as long as wide in both P. dursuni and P. bohousi ; further differences concern colouration of the male fore tarsus, which is completely yellow in P. nanus , yellow with dark last segment in P. hallensis and P. bohousi and yellow with segments 2–4 black on apical ¾ in P. dursuni ; and they also differ in the shape of left epandrial lamella which is deeply excised in P. nanus (see Chvála 1989, fig. 71.), shallowly excised in P. bohousi sp. nov. ( Fig. 11 ), triangular in P. dursuni sp. nov. ( Fig. 18 ), and elongate with apical finger like and long setose process in P. hallensis (see Grootaert & Stark 1997, fig. 7.). Moreover, P. hallensis has a long proboscis (nearly as long as head height) and both P. hallensis and P. nanus have paler (yellow) large thoracic setae than both P. dursuni and P. bohousi . Also females may be distinguished according to the same characters (except genitalia). Compare also remarks under Platypalpus sp. nr. hallensis .

Both Platypalpus dursuni and P. bohousi may be distinguished in the key by Grootaert & Chvála (1992) modified as follows:

196 (195b) Postpedicel at least 4X longer than broad. Katepisternum with a lustrous patch in middle.........................................................................................canariensis Grootaert & Chvála, 1992 - Postpedicel at most 3X longer than broad. Katepisternum entirely microtrichose........................... 196a 196a (196) Legs dark brown. Antenna black. Mid femur without black spines ventrally (male unknown)............................................................................................. minutissimus (Strobl, 1899) - Legs mostly yellow, only femora sometimes darkned. Basal antennal segments yellow to reddish yellow. Mid femur with distinct black spines ventrally.............................................................. 196b 196b (196a) Male with left epandrial lamella without cleft. Segments 2–4 of fore tarsus with basal fourth whitish and apical part contrastingly black, segment 5 dirty yellow ( Fig. 31 ). Female with all tarsal joints except basitarsi darkened, last two segments almost entirely darkened...................................................... dursuni sp. nov.

- Male with left epandrial lamella with shallow cleft. Segments 2–4 of fore tarsus yellow, segment 5 with apical part contrastingly black ( Fig. 29 ). Female with only last segment of tarsi brown......................... bohousi sp. nov.

Figures

FIGURES 8–11.Platypalpus bohousi sp. nov. 8. antenna.9. right epandrial lamella, lateral view.10. genitalia, dorsal view.11. left epandrial lamella, lateral view.

FIGURES 27–30. Holotypes.27. Platypalpus academicussp.nov. 28. Platypalpus anomalussp.nov. 29. Platypalpus bohousi sp. nov. 30. Platypalpus diminuticornis sp. nov.

FIGURES 15–18.Platypalpus dursuni sp. nov. 15. antenna.16. right epandrial lamella, lateral view.17. genitalia, dorsal view. 18. left epandrial lamella, lateral view.

FIGURES 31–33. Holotypes.31. Platypalpus dursuni sp. nov. 32. Platypalpus moceki sp. nov. 33. Platypalpus seticauda sp. nov.