Xeromyia Rohdendorf, 1925

Verves, Yu. G., 2020, Review Of Subtribe Apodacrina (Diptera, Sarcophagidae) Of Middle East With Descriptions Of Ten New Species, Zoodiversity 54 (3), pp. 183-204 : 190-192

Genus Xeromyia Rohdendorf, 1925

Xeromyia Rohdendorf, 1925: 70 (as subgenus of Apodacra Macquart, 1854 ). Type species: Apodacra xanthopoda Rohdendorf, 1925 , by designation of Townsend, 1938: 152.

Xeromyia: Rohdendorf, 1930: 16 , as a subgenus of Apodacra Macquart, 1854 (revision); Rohdendorf & Verves, 1980: 493 (key); Verves, 1986: 85 (catalog); 1990: 539 (key to East Palaearctic species); Verves et al., 2015: 270 (review).

Diagnosis. Small or medium sized (3.5–9.5 mm) bright colored flies. Frons and face of medium width, vibrissal angle placed at oral margin, head in profile angular; hind border of head slightly shortened; orb 1+ 0–2; Postpedicel 3–10× as long as pedicel.

18 species are distributed in southern part of Palaearctic and Afrotropical Regions. Larvae of Xeromyia sp. were bred from nests of sphecid wasp Tachysphex pompiliformis (Panz.) where feed by paralyzed locust Dociostaurus kraussi Ingen. (Malkovsky, 1962) .

Key to species

1.} ........................................................... …………………………………………………………………….. 2

— {. ......................................................................................................................................................... 14

2. 2 pairs of vi. Frons as wide as eye, 0.30× head-width, frontal vitta in fore part parallel, in the middle of frons 1.5× as wide as one of parafrontalia, 1.5× widened in hind part. Abdomen reddish yellow, 3rd and 4th tergites with brown median spots, 5 th tergite with 3 spots. 6.0–8.0 mm.……………………………………………………………………..................... X. algiralis ( Séguy, 1941)

— One pair of vi. ...................................................................................................................................................... 3

3. 2 pairs of proclinate orb ( figs 15, b–c; 16 , b–c). Frontal vitta in fore part strongly narrowed, narrower than one of parafrontalia. 4.5–5.0 mm. ....................................................................... X. merei ( Séguy, 1941)

— One pair of proclinate orb or they absent ( figs 17, b–c; 18 , c–d). ................................................................ 4

4. 4 th abdominal tergite in hind part shining black. 5.0– 5.5 mm ..................... X. sulcata ( Villeneuve, 1933)

— 4 th tergite with another pattern, sometimes entirely black. ........................................................................... 5

5. Gena with yellow setae only ( figs 17, b–c; 18 , b–c. ........................................................................................ 6

— Fore part of gena with several black setae in addition to yellow ones. ...................................................... 13

6. Pleuron and legs entirely yellow. 4.5–5.5. mm...................................... X. xanthopoda ( Rohdendorf, 1925)

— Pleuron grey pollinose, legs as a rule partly dark pollinose. ........................................................................ 7.

7. 3 rd –5 th abdominal tergites entirely black, slightly light pollinose. 4. 0 mm. ..................... X. omanica sp. n.

— 3 rd –5 th tergites with dark spots and stripes, densely light pollinose. ............................................................ 8

8. 3 rd tergite in hind part entirely shining black. 4.0– 6.5 mm .................... X. stenorhina ( Rohdendorf, 1934)

— 3 r d tergite in hind part with distinctly separated median spot and lateral stripes. .................................... 9

9. Frontal vitta in fore part 0.5× as wide as one of parafrontalia. The distance between lateral stripes and median spot of 3 rd abdominal tergite very narrow, almost linear. 6.5–7.0 mm. Saudi Arabia. ................... ................................................................................................................................................... X. jeddaense sp. n.

— Frontal vitta in fore part not less than 0.7× as wide as one of parafrontalia ( fig. 12 , d). The distance between spot and stripes of 3 rd abdominal tergite broad, only slightly less than diameter of median spot. ..............................................................................................................................................................10

10. Lateral bands of 4 th and 5 th abdominal tergites black ( fig. 12 , b). 4.5–5.5 mm. ............................................. ............................................................................................................................ X. africana ( Rohdendorf, 1930)

— Lateral bands of 4 th and 5 th abdominal tergites brownish yellow. 4.5–7.0 mm. ............................................. ................................................................................................................. X. pseudoxygona ( Rohdendorf, 1925)

11. 4 th abdominal tergite with dark median spot and lateral stripes. ............................................................... 12

— 4 th tergite with median spot only, lateral stripes absent. 5.0– 5.5 mm. X. ponti sp. n.

12. 4 th and 5 th abdominal tergites with dark brown to black median spot and brownish yellow lateral stripes. 4.0– 5.5 mm. ................................................................................................. X. orthogona ( Rohdendorf, 1925)

— Pattern of 4 th and 5 th tergites completely black. 5.0 mm. ............................................ X. moderabilis sp. n.

13. 2 pairs of proclinate orb ( figs 15, a–c; 16 , b–d). ............................................................................................ 14

— One pair of proclinate orb. .............................................................................................................................. 15

14. Gena in fore part with yellow setae only. .................................................................... X. merei ( Séguy, 1941)

— Gena in fore part with several black setae. 4.5 mm. ........................................................... X. nahalica sp. n.

15. Abdomen with linear longitudinal median black stripe (fig. 13, f). .......................................................... 16

— Abdominal tergites with broad median spots and lateral stripes in hind parts. ...................................... 17

16. Abdomen densely golden grey pollinose, lateral spots of 4 th tergite well developed,black. t 1 in apical 2/3 black. ............................................................................................................ X. orthogona ( Rohdendorf, 1925)

— Abdomen orange yellow, with fine light dusting, lateral spots of 4 th tergite almost reduced, brownish yellow. t 1 entirely yellow................................................................................................................. X. ponti sp. n.

17. 3 rd abdominal tergite in hind part entirely shining black ( fig. 17 , f) .... X. stenorhina ( Rohdendorf, 1934)

— 3 rd abdominal tergite with median spot and separated with it paired lateral stripes. .............................. 18

18. In addition to usual pattern, 3 rd abdominal tergite with a pair of lateral black setaed areas in hing part. 5.5–7.0 mm................................................................................................. X. dasystigma ( Rohdendorf, 1934)

— 3 rd abdominal tergite without black setaed areas. ......................................................................................... 19

19. Pleuron and legs entirely yellow. ........................................................... X. xanthopoda ( Rohdendorf, 1925)

— Pleuron and legs distinctly light grey pollinose. ........................................................................................... 20

20. Lateral spots of 1+2 abdominal tergite brownish black ( figs 12 , a–b). .... X. africana ( Rohdendorf, 1930)

— Lateral spots of 1+2 abdominal tergite brownish yellow................. X. pseudoxygona ( Rohdendorf, 1925)

Figures

Figs 15–16. Xeromyia merei (Séguy. 15 (male): a — habitus in lateral view; b — head in profile; c — head in frontal view; d — head in dorsal view; e — wing; f — abdomen in dorsal view; g — label. 16 (female): a — habitus in lateral view; b —head in profile; c — head in frontal view; d — head in dorsal view; e — wing; f — abdomen in dorsal view; g — label.

Figs 17–18. Xeromyia stenorhina (Rohd.). 17 (male): a — habitus in lateral view; b — head in profile; c — head in frontal view; d — head in dorsal view; e — wing; f — abdomen in dorsal view; g — label. 18 (female): a — habitus in lateral view; b — abdomen in dorsal view; c — head in profile; d — head in frontal view; e — head in dorsal view; f — wing; g — label.

Fig. 12. Xeromyia africana (Rohd.) (female): a —habitus in lateral view; b — abdomen in dorsal view; c —head in profile; d —head in frontal view; e —head in dorsal view; f — wing; g — label.