Tomosvaryella angulata Kehlmaier & Majnon-Jahromi

Majnon-Jahromi, Bahareh, Gheibi, Mehdi, Fallahzadeh, Majid, Kehlmaier, Christian & Hesami, Shahram, 2017, Pipunculidae (Diptera) from southern Iran, including two new species of the genus Tomosvaryella Aczél, Zootaxa 4273 (4), pp. 488-500 : 493

Tomosvaryella angulata Kehlmaier & Majnon-Jahromi sp. nov.

Figs 3–8

Type material. HOLOTYPE: 1♂, loc. 7, 9–16.v.2014 (SMTD); PARATYPES: 1♂ (DNA CK831, LT671787 ), loc. 7, 9–16.v.2014 (SMTD); 1♂, loc. 4, 18–28.vi.2015 (SHIAU); 1♀ (DNA CK804, LT671786 ), loc. 3, 5–15.iv.2012 (SMTD).

Description. MALE. Body length 2.9–3.3 mm; wing length 3.5–3.8 mm; eyes meeting for a distance slightly more than twice the length of ocellar triangle, i.e., for approximately six to nine ommatidia; pedicellus with two minute bristles dorsally and one ventrally; flagellum pointed, tawny, tip may be paler; thorax dark brown except postpronotal lobe yellow; dorsal bristles hardly discernible, black; wing membrane with a faint brownish tinge; wing membrane covered in microtrichia except for the base, including the anal lobe basally; third costal segment 1/ 3 the length of fourth costal segment; crossvein r-m reaching cell dm at or shortly after the middle; crossvein bm-cu interrupted right before reaching cell br on both wings; halter with dark base, whitish stem and light brown knob; leg dark brown except for the narrowly yellow apex of femora, basal 1/3 and apex of tibia and tarsal segments except distitarsus; hind trochanter ventrally smooth, without spines or projection; fore femora with posteroventral row of minute black spines in apical half; mid femora with antero- and posteroventral row of minute black spines for more than apical half; hind femora with anteroventral row of minute black spines in apical half; pulvilli slightly shorter than distitarsus; abdomen dark brown; tergite 1 with lateral patch of about ten short black setae on each side, slightly shorter than width of tarsal segments; dorsal setae of abdomen black, hardly discernible; sclerites dark brown, apparently evenly sclerotised; genitalia, in dorsal view, with short epandrium, broader than long, slightly less sclerotised in the central part; surstyli almost symmetrical, gradually tapering towards apices, which are distinctly knobbed; left surstylus slightly protruding the right one; membrane of syntergosternite 8 large, almost reaching epandrium, caudally occupying 1/3 of syntergosternite 8; in lateral view, apical half of surstyli bent towards venter by 90° (see inner margin); phallus trifid, with two longer and one shorter upright and wavy ejaculatory ducts, the longest one carrying about six scale-like projections at its base (see at high magnification, i.e., 100x); phallic guide small and inconspicuous, tip pointing towards epandrium. FEMALE. Body length 2.7 mm; wing length 3.2 mm, differing from male by dichoptic eyes; frontal ommatidial facets distinctly enlarged; frons widened in its middle, twice the width of the ocellar triangle or equal to the length of four enlarged ommatidial facets; flagellum with paler apical half; crossvein r-m reaching cell dm shortly after the middle; pulvilli of fore and mid legs as long as distitarsi; ovipositor with dark base and yellow piercer; in lateral view, base of ovipositor with a distinct ventral protuberance; piercer gently undulating; in dorsal view, base of ovipositor rather trapezoid and piercer with weak lateral flanges in the middle of its length.

Differential diagnosis. To the best of our knowledge, T. angulata sp. nov. is a unique species among the Palaearctic Pipunculidae , due to its distinctly apically-knobbed and laterally-bent surstyli in the male, and due to the weakly undulating ovipositor that bears a distinct ventral protuberance in the female ( Figs 3–8 ). For further remarks, see under T. pistacia sp. nov.

Etymology. The Latin adjective angulata (English: angular) refers to the angled surstyli of male genitalia.

Figures

FIGURES 3 – 8. Tomosvaryella angulata Kehlmaier & Majnon-Jahromi sp. nov. — 3 – 6: male paratype (DNA CK 831); 7 – 8: female paratype (DNA CK 804). 3 — right surstylus and phallus, lateral view; 4 — syntergosternite 8, epandrium and surstyli, dorsal view; 5 — left surstylus, lateral view; 6 — phallus, lateral view; 7 — ovipositor, dorsal view; 8 — ovipositor, lateral view. Scale bars = 0.1 mm.