Platypygus Loew

Gharali, Babak, Evenhuis, Neal L. & Almeida, Jorge, 2013, World synopsis of described species of the genus Platypygus Loew (Diptera: Mythicomyiidae: Platypyginae), Zootaxa 3745 (2), pp. 199-242 : 202-203

Key to world species of the genus Platypygus Loew

1. Mesonotum with three black, brown, or orange longitudinal stripes (e. g. Figs. 11 d, 16c)............................. 2

-. Mesonotum with large contiguous black mark, without distinct stripes (e. g. Figs. 8 b, 3c)............................ 9

2. Longitudinal stripes on mesonotum orange................................................................. 3

-. Longitudinal stripes on mesonotum brown or black........................................................... 4

3. Crossvein r-m before middle of cell dm; hairs on thorax and abdomen yellowish white ... (Nearctic). P. americanus Melander

-. Crossvein r-m at about middle of cell dm; hairs on thorax and abdomen black ... (Europe, Mediterranean, Middle Asia)........................................................................................ P. ridibundus (Costa)

4. Longitudinal stripes on mesonotum brown ( Fig. 13 b); Sc incomplete, not reaching costa ( Fig. 13 e) ... ( South Africa, Namibia)..................................................................................... P. natalensis Hesse

-. Longitudinal stripes on mesonotum black (e. g. Fig. 5 b, 7c); Sc complete or incomplete............................ 5

5. Halter knob with black spot on dorsal surface............. ( Tajikistan, Uzbekistan)............... P. lativentris Loew

-. Halter knob completely yellow, without black spot.......................................................... 6

6. Mesonotum completely bare; antennae completely black; furca of female genitalia without sclerotized plates lateral to genital orifice ( Fig. 8 e) ... (Middle East)...................................................... P. kurdorum Paramonov

-. Mesonotum hairy; antennal scape yellow or black; furca of female genitalia with two sclerotized plates lateral to genital orifice ( Figs. 2 , 22 ) 7

7. Hairs on mesonotum completely black; frons yellow with distinct or diffused black Y-shaped mark medially ( Fig. 5 b) ... (Mid- dle East, Europe) P. chrysanthemi Loew

-. Hairs on mesonotum completely yellow or white; frons yellow, at most with narrow black line medially ( Figs. 11 b, 20j) ... 8

8. Mesonotum with black spot laterally posterior to transverse suture ( Fig. 20 e); black median stripe on mesonotum usually reaching scutellum; abdominal tergites with fine, long, pale hairs; male genitalia large, well exposed; spermathecal reservoir

acorn-shaped, with prominent cap ( Fig. 22 ) ... (Middle East)....................... P. titanomedea Gharali & Evenhuis -. Mesonotum without lateral black spot ( Fig. 11 d); black median stripe on mesonotum ending much before scutellum with straight posterior margin; abdominal tergites with short, dense, bristly black hairs; male genitalia very small; spermathecal res- ervoir obovate, without cap ( Fig. 12 a) ... (Caucasus, Middle East, Europe)..................... P. melinoproctus Loew 9. Knob of halter dark brown dorsally ... ( China, Nepal, and Thailand)................................. P. l i ma t us Séguy

-. Knob of halter yellow to white, without black coloration dorsally............................................. 10

10. Posterior margin of mesonotum yellow ( Fig. 14 c) ... (Caucasus, Mediterranean)....................... P. pumilio Loew

-. Posterior margin of mesonotum at least black medially ( Figs. 3 c, 23b).......................................... 11

11. Prescutellar area of mesonotum with triangular black mark ( Fig. 3 c) ... (Southern Palaearctic)............ P. bellus Loew

-. Prescutellar area of mesonotum with large oval yellow mark ( Fig. 23 b) ... ( Turkmenistan, Uzbekistan)................................................................................................. P. turkmenorum Paramonov

Figures

FIGURE 2. Platypygus americanus female genitalia. Abbreviations: c = canaliculi, s. r. = spermathecal reservoir, a. s. d. = apical spermathecal duct, b. s. d. = basal spermathecal duct, c. s. d. = common spermathecal duct, f. = furca, s. = sclerite adjacent to genital orifice.

FIGURE 3. Platypygus bellus male lectotype: a — wing, b — lateral view (head missing), c — mesonotum (dorsal view).

FIGURE 5. Platypygus chrysanthemi female syntype: a — lateral view, b — dorsal view, c — dorsolateral view of mesonotum.

FIGURE 8. Genitalia of Platypygus kurdorum: a — epandrium (lateral view), b — gonocoxites (dorsal view), c — phallic complex (dorsal view), d — phallic complex (lateral view), e — female genitalia (furca and tubes), f — spermathecal reservoir.

FIGURE 11. Platypygus melinoproctus: a — adult male (lateral view), b — head (anterolateral view), c — female abdomen (dorsal view), d — female mesonotum (dorsal view), e — male abdomen (dorsal view), f — female head (anterior view), g — wing.

FIGURE 12. Genitalia of Platypygus melinoproctus: a — female genitalia (furca and tubes), b — spermathecal reservoir, c — epandrium (anterolateral view), d — gonocoxite (dorsal view), e — phallic complex (dorsal view), f — phallic complex (lateral view).

FIGURE 13. Platypygus natalensis female holotype: a — lateral view, b — dorsal view, c — head (ventrolateral view), d — wing, e — detail view of vein Sc, f — head (anterior view).

FIGURE 14. Platypygus pumilio male lectotype: a — lateral view, b — wing, c — mesonotum (dorsal view), d — head (anterior view).

FIGURE 20. Platypygus titanomedea: a — male, b — female, c — mesonotum (dorsal view), d — male abdomen (dorsal view), e — female abdomen (dorsal view), f — antenna, g — male abdomen (lateral view), h—mesonotum (lateral view), j — wing, k — head (anterodorsal view).

FIGURE 22. Female genitalia of Platypygus titanomedea.

FIGURE 23. Platypygus turkmenorum male paratype: a — head (anterior view), b — mesonotum (dorsal view), c — wing, d — adult habit (lateral view). Scale bars = 1 mm.