Choerades caudatus Lehr, 1991

Young, Charles L. & Hradský, Milan M., 2007, Robber flies of South Korea III. South Korean species of the Subfamily Laphriinae Macquart, 1838 (Diptera: Asilidae), Zootaxa 1388, pp. 1-23 : 9

Choerades caudatus Lehr, 1991

( Figs. 3 , 9 , 15 , 19 , 39, 40 )

Choerades caudatus Lehr, 1991: 707 . Lehr 1992: 59.

Small black flies, 10–14.5 mm. Proboscis upturned apically terminating in a sharp dorsal apex (fig. 27). The male is separated by the unusually long extension protruding from tergite 6 ( Figs 9 & 19 ).

Redescription.

Head: Face black, yellow pollinose with short black hair. Mystax sparse, long and black. Parafacial hair long, white. Orbital hair long, black. Proboscis apically angulated (ventrally angled upwards) with a sharp apex ( Fig. 27 ). Short black postocular hair. Ocellar tubercle with 2 long, black dorsal bristles. Antenna black; relative lengths of segments: 3>1>2; postpedicel (segment 3) apex with a shallow dorsal pit. Thorax: Scutum dull blue black with short sparse black acrostichal hair. Postpronotal lobe, postalar callus, and posterior margin of postsutural area of scutum silver gray pollinose. Postpronotal hair black, abundant. Chaetotaxy with 1 notopleural, 3–4 supraalar, 2–3 postalar bristles, all black. Sparse long fine dorsocentral hair. Discal scutellar hair long, appressed, yellow. 10 strong black marginal scutellar bristles. Lateral aspect of thorax silver gray tomentose. Anepisternum with dorsal black and ventral yellow sparse fine hair; 2 strong black posterior bristles. Katatergal bristles black and yellow. Anatergite silver gray tomentose. Legs: Entirely black with long abundant black and yellow hair and black bristles. Wings: Tinged black, basal cells clear. Abdomen: Tergites dull blue black with short appressed black hair. Tergites 1–5 with a short sparse fringe of yellow posterior margin hair. Tergites 1–5 each with a strong black lateral bristle. Male genitalia: ( Figs 3 , 9 , 15 & 19 ). Tergite 6 with a long projection ( Figs 9 & 19 ), bulbous or arrow­head shaped apex, which may be situated between the lobes of the gonopod, or offset to one side ( Fig. 9 ). Female: Similar to male except lateral tergite bristles less prominent, often missing. Abdomen clavate.

Material examined. Chollabuk­Do Province: 1ɗ: 24/VII/1999, Pyongsanbando N. P. Puan­Gun, 37°44’57”N, 128°34’19”E; 1Ψ: 2/VIII //1998, Songsusan Mt. Resort area, Songsu­Myon, 35°38’26”N, 127°24’42”E; 2ɗ, 2Ψ: 4/VII–24/IX/2002, Yeong Dong Gun, songchon Myon, Mullan Valley, Goja Dong, P. Tripotin coll., In Malaise trap. Chollanam­Do Province: 4 ɗ, 8Ψ: 26/V/1998 – 20/IX/2002, Chirisan N.P. Piagol Valley, Chiri Mt. 570– 800 m., 35°16’39”N, 127°33’91”E. Kang­won­Do Province: 3Ψ: 12/VI–11/VII/2004, Ch’unch’on. Nam­Myon, Magog­Li, Hongcheon River, 37°43’786”N, 127°34’589” P. Tripotin coll. Kyongsangnam­Do Province: 3ɗ, 3Ψ: 6/VII/2002 – 20/IX/2003, Macheon Chirisan Mt. 705m., 35°20’55”N, 127°38’21”E; 2Ψ: Same data except 27/VI/2004, P. Tripotin coll.; 1Ψ: Same data except 24/VIII–15/IX/2002, P. Tripotin coll. 1ɗ: Same data except 16/VIII–5/IX/2004, P. Tripotin coll.

Figures

FIGURES 1 – 6. Choerades males — lateral views. 1. C. amurensis. 2. C. caucasicus. 3. C. caudatus. 4. C. japonicus. 5. C. komurai. 6. C. nigrovittatus.

FIGURES 7 – 12. Choerades males — ventral views. 7. C. amurensis. 8. C. caucasicus. 9. C. caudatus. 10. C. japonicus. 11. C. komurai. 12. C. nigrovittatus.

FIGURES 13 – 18. Choerades males — gonopods. 13. C. amurensis. 14. C. caucasicus. 15. C. caudatus. 16. C. japonicus. 17. C. komurai. 18. C. nigrovittatus.

FIGURES 19 – 23. 19. Choerades caudatus, male extension. 20 – 23 Orthogonis sp. 20. Male genitalia, lateral. 21. Gonopod. 22. Male genitalia, ventral. 23. Wing.

FIGURES 39 – 44. 39. Choerades caudatus, ♂ dorsal. 40. Choerades caudatus, ♂ lateral. 41. Choerades gilva, Ψ dorsal. 42. Choerades gilva, Ψ lateral. 43. Choerades japonicus, ♂ dorsal. 44. Choerades japonicus, ♂ lateral.

FIGURES 24 – 28. Heads. 24. C. amurensis. 25. Orthogonis sp. 26. C. sp. 27. C. caudatus. 28. C. caucasicus.