Philonicus albiceps ( Meigen, 1820 )

Young, Charles L., 2006, Robber flies of South Korea — II. South Korean species of the Subfamily Asilinae Latreille, 1802 (Diptera, Asilidae), Zootaxa 1132, pp. 1-30 : 22-23

Philonicus albiceps ( Meigen, 1820)

( Figs 12 , 25 , 47, 48 & 66 )

Asilus albiceps Meigen 1820 Meigen (1820: 312) .

Small gray flies, 14–19mm. Legs entirely black. Epandrial lobes with a distinct mediodorsal tooth ( Fig. 12 ). Gonostylus arched ventrally and apex widely rounded ( Fig. 25 ). Aedeagus short, truncated, apex trifid ( Figs. 47, 48 ). Ovipositor with distinct strong dorsal spines and smaller ventral spines ( Fig. 66 ).

Head: Mystax with long white hair; face black and white tomentose; strong black postocular bristles. Thorax: Chaetotaxy with 1 weak posthumeral; 2 notopleural; 1–2 supraalar; 2 postalar; 2–4 dorsocentral bristles. Scutellum gray pollinose with sparse short black hair; suctellar margin with 2 strong bristles and row of sparse yellow hair. Pleurae gold/gray tomentose with sparse white and yellow hair. Legs: Black with yellow and black hair and bristles. Wings: Darkly tinged on posterior margin. Abdomen: Gray integument with short black medial hair and lateral yellow hair. Distinct lateral marginal bristles on all tergites. Male sternite 8 reduced. Epandrial lobe with a distinct medio­dorsal tooth, posterior half of lobe curving medially enclosing an open circular space ( Fig. 12 ). Female ovipositor with distinct strong dorsal spines on cercus and weaker ventral spines ( Fig. 66 ).

South Korean distribution. Ch’ungch’ ǒ ngnam­Do Province. Chungnam. Kŭmsan. Yangsan­Myon. (no coordinates available). Kang­won­Do Province. Chunch’ŏn­Shi. Namsan­Myon. Kangchon. 37°42’40”N, 127°35’26”E.

Material examined. 3ɗ, 5Ψ: 30/VI/2002, P. Tripotin coll., Ch’ungch’ŏngnam­Do Province, Chungnam. Kŭmsan. Yangsan­Myon, Along river bed; 1ɗ: 12/VI/2004, Kang won Do Province, Ch’unch’ŏn­Shi, Namsan­Myon, Kangchon.

Field notes: Philonicus albiceps was collected along river banks on loosely scattered stones.

Figures

FIGURES 1 – 12. Male external genitalia, lateral views. 1. Aneomochtherus sinensis. 2. Asilella londti. 3. Astochia virgatipes. 4. Eutolmus brevistylus. 5. Machimus aurulentus. 6. Machimus cf. pastshenkoae 7. Mercuriana ussuriensis. 8. Neoitamus angusticornis. 9. Neoitamus castaneipennis. 10. Neoitamus cothurnatus univittatus. 11. Neoitamus zouhari. 12. Philonicus albiceps. Scale bar = 1 mm.

FIGURES 13 – 25. Male gonopods, lateral views. 13. Aneomochtherus sinensis. 14. Asilella londti. 15. Astochia virgatipes. 16. Eutolmus brevistylus. 17. Eutolmus koreanus. 18. Machimus aurulentus. 19. Machimus cf. pastshenkoae. 20. Mercuriana ussuriensis. 21. Neoitamus angusticornis. 22. Neoitamus castaneipennis. 23. Neoitamus cothurnatus univittatus. 24. Neoitamus zouhari. 25. Philonicus albiceps. Scale bar = 1 mm.

FIGURES 26 – 48. Male aedeagi, lateral and dorsal views. 26 – 27. Aneomochtherus sinensis lateral & apex. 28 – 29. Asilella londti lateral & apex. 30 – 31. Astochia virgatipes lateral & apex. 32 – 33. Eutolmus brevistylus lateral & apex. 34 – 35. Machimus aurulentus lateral & apex. 36 – 37. Machimus cf. pastshenkoae lateral & apex. 38 – 39. Mercuriana ussuriensis lateral & apex. 40 – 41. Neoitamus angusticornis lateral & dorsal. 42 – 43. Neoitamus castaneipennis lateral & dorsal. 44. Neoitamus cothurnatus univittatus lateral. 45 – 46. Neoitamus zouhari lateral & dorsal. 47 – 48. Philonicus albiceps lateral & apex.

FIGURES 58 – 66. Female external genitalia, lateral views. 58. Aneomochtherus sinensis. 59. Asilella londti. 60. Astochia virgatipes. 61. Eutolmus brevistylus. 62. Machimus aurulentus. 63. Machimus cf. pastshenkoae. 64. Mercuriana ussuriensis. 65. Neoitamus angusticornis. 66. Philonicus albiceps.