Hypselothyrea deficiens, Papp, 2003

Papp, L., 2003, New Species And Records Of Hypselothyrea De Meijere (Diptera, Drosophilidae), Acta Zoologica Academiae Scientiarum Hungaricae 49 (4), pp. 271-294 : 275-277

Hypselothyrea deficiens sp. n. ( Figs 2–4 )

Holotype male ( MHNG): N Thailand 900, Chiang Mai Prov., Doi Suthep-Pui N.P., What Phrathat – 18.80N / 98.91E, 16. X. 2000, MERZ & SCHWENDINGER leg.

Paratypes ( MHNG, 2 m, 1 f in HNHM) : 1 male ( HNHM, gen. prep., abdomen with genitalia in a microvial with glycerol) , 1 female: data same as for holotype ; 1 female ( HNHM, abdomen lost during preparation): ibid ., 950, 17. X.; 1 male: ibid ., 1100, 18.81N / 98.91E, 17. X.; 1 male: ibid ., 19. X.; 1 male: ibid ., 26. X., B. MERZ leg.; 3 males, 1 female (1 male in HNHM): ibid ., 17. X., B. MERZ leg.; 1 male (in alcohol): Thailande, Khao Yai Nat. Park , aux environs de “Headquarters”, 750–850 m, leg. D. H. BURCKHARDT et I. LÖBL, 26. XI.–3. XII. 1985, No. 28b [tamisage de débris végétaux] .

Measurements in mm: body length 2.16 (holotype, measured along downcurved abdomen), 1.95–2.20 (paratypes), wing length 2.02, 1.78–2.05, wing breadth 0.59, 0.51–0.60.

Body ochre, shiny, caudal part of mesonotum, dorsal surface of scutellum, as well as caudal and ventral parts of pleurae diffuse brown.

Frontal shield quadrate, shiny yellow. Antenna darker brown dorsally, brownish yellow ventrally in its whole length. Arista with 3 long curved dorsal and 2 long curved ventral rays behind long curved apical fork. First flagellomere with 0.02 mm long cilia apically. Facial keel similar to that of H. guttata : reaches not much more ventrally than 1/2 of face, dorsal surface flat, ventral edge nearly sharp. Frontal setae as usual, ocellars 0.25 mm long.

Two pairs of strong dorsocentral setae, acrostichals in 2 well-ordered rows.

Legs three-coloured: fore coxa, mid and hind tarsi yellow, fore tibia and tarsi, basal half of mid and hind femora whitish, apices of femora and base of fore femur, as well as mid and hind tibiae black.

bars: 0.1 mm ( Figs 2, 4, 6 ), 0.05 mm ( Fig. 3 ), 0.05 mm ( Fig. 5 )

Wing patterned, similarly to H. paraguttata (see OKADA 1980: fig. 3), darker colour caused mainly by the density and dark colour of membrane microtrichia and also by the colour of membrane itself. Veins brown on areas of dark colour, ochre on light spots. Costa undulately bent on mg 2 section. No distal spot in r 1 cell. C index 0.66 mm / 0.74 mm, i.e. 0.89. Anal cell open, anal vein short bacilliform, not continued distally to anal cell.

Abdomen basically shiny darker yellow, caudal margins of tergites 2 to 5 (in some males also medial 2/3 of tergites 4 to 6) with gradually longer black transverse stripes.

Male genitalia ( Figs 3–4 ) peculiar with 2 extremely long and thick thorns ( Fig. 3 ) on epandrium apically. Surstylus with 5 prensisetae only. Also inner genitalia are unique ( Fig. 4 ): parameres developed into a pair of extremely large and thick processes, which is quite unusual in this species group.

Apex of female oviscapt ( Fig. 2 ) laterally turned, consequently, not possible to make a good figure in a clear lateral view. Positioning of armature is not much different from that of H. guttata , but pegs are more acute and also longer.

I found another undescribed sp.n. of the H. guttata species group: 1 male ( MHNG, defected specimen, e.g. antennae lost): Thailand, Doi Suthep-Pui N.P., 1300m, Huay Khok Ma, 19. XII. 2001, P. SCHWENDINGER leg. Fordifferentiatingcharactersseethekeyforthespeciesofthisspeciesgroup.

Figures

Figs 2–6. 2–4 = Hypselothyrea deficiens sp. n.: 2 = oviscapt, sublateral view, 3 = apex of epandrium and surstylus, broadest extension, 4 = hypandrium and genitalia, ventral view. 5–6 = H. fascipennis DE MEIJERE: 5 = surstylus, broadest extension, 6 = hypandrium and genitalia, ventral view. Scale