Neoitamus cothurnatus univittatus ( Loew, 1871 )

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 : 19-22

Neoitamus cothurnatus univittatus ( Loew, 1871)

( Figs 10 , 23 , 44 , 53 & 54)

Itamus univittatus Loew, 1871: 183 .

= Asilus nebulosus Matsumura, 1911: 71 .

Neoitamus cothumatus univittatus: Lehr, 1966: 568 .

Mid to small sized dark flies, 13 17mm. Femora entirely black. The dorsal epandrial lobe projection is excised and sharp at its apex, and forms a shallow, oval cavity with the lower, ventral projection ( Figs. 10 , 53, 54 ). The distal, ventral gonostylus apex is distinctly rounded (usually seen externally, without dissection) ( Fig. 23 ).

Head: Face yellow and gray pollinose. Gibbous area in lateral aspect unevenly contoured, projecting sharply above; ventral margin tapering into oral margin and gena. Gena gray tomentose with black hair. Mystax dense, dorsal portion black, medially white, ventral short white hair. Palpus hair yellow basally, black apically. Lower occipital fringe with light yellow hair; medial portion with longer black proclinate hair; upper, dorsal area with black, strongly proclinate hair. In lateral aspect, dorsal proclinate hair extends over eye margin. Distance between dorsal margin of facial gibbosity and antennal base equal or less the length of antennal segment 1 (scape). Thorax: Paramedian scutal and lateroscutal stripes dull black. Two rows of acrostical hair. Pleurae dark and light gray pollinose. Dorsal posterior anepisternum with long black hair. Katepisternum and anepimeron with long black hair. Katatergite with vertical rows of long yellow hair. Metepimeron with long white hair and a patch of yellow tomentum. Anatergite with sparse short black hair. Humeral callus with black hair. Chaetotaxy with 5 notopleural; 6 supraalar; 6–7 postalar bristles. 6 scutellar margin bristles; suctellar hair sparse. Anterior cluster of dorsocentral hair tapers posteriorly. Legs: Coxae gray with white hair. Femora black. Tibia reddishyellow, black at apices. Fore femur black with black tomentum; 1 anterior apical bristle; 6 posterolateral bristles, longer basally; ventral surface with a fringe of long white and black hair. Mid femur black with black tomentum; anterior surface with a row of 4 long black bristles and 1 small apical bristle; 5 anterodorsal bristles; 2 posterolateral apical bristles; ventral surface with a fringe of long white and black hair. Basal areas of hind femur, in anterior and anterodorsal aspect, yellow and black tomentose; 4 anterior bristles and 3 short apical bristles; anterodorsal surface with 2 long apical bristles, a semi circlet of weak short apical bristles; a ventral fringe of long white and black hair. Fore tibia reddishyellow; basal apex with a short band of black, wider ventrally, distal apex black; black tomentose; 1 anterior apical bristle; 1 basal anterodorsal bristle, 2 apical bristles; posterolateral surface with 3 long yellow apical bristles and a fringe of long yellow and black hair; a ventral fringe of thick yellow tomentum extends half way apically. Mid tibia with 3 anterodorsal bristles, an apical circlet of bristles; posterolateral surface with 2 bristles; ventral surface with long yellow hair. Hind tibia with 3 long anterior bristles, a circlet of apical bristles, anterodorsal surface with 3 weak bristles, a fringe of thick yellow tomentum extends half way apically to first elongated tarsal segment; ventral surface with 2 apical bristles, a short fringe of thick yellow tomentum on apical surface. Tarsomeres with apical bristles, black dorsally, yellow ventrally. Wings: Tinged brown at apex and margins. Abdomen: Dull black. Tergites 6–8 shiny blue black. Tergites 1 5 short black tomentose; tergite 1 with short yellow medial hair, long yellow lateral hair and bristles on tergites 3–5; lateral hair absent on subsequent tergites; tergites 5–7 with short black tomentum. Sternites 1–5 with long yellow hair, shorter apically. Dorsal epandrial lobe projection excised, sharp at apex forming shallow oval cavity with lower ventral projection ( Figs. 10 , 53, 54 ). Gonostylus apex rounded ( Fig. 23 ). Ovipositor elongated, compressed, similar to N. angusticornis ( Fig. 65 ).

South Korean distribution. Ch ǒ llabuk ­Do Province. Naejangsan N.P. South entrance. 35°26’34”N, 126°53’06”E. Sŏngsusan Mt. Resort area. Sŏngsu­Myŏn. 35°38’26”N, 127°2442E. Kang­won­Do Province. Chunchŏn­Shi. Namsan­Myon. Kangchon. 37°42’40”N, 127°35’26”E. Odaesan N. P. Chinbu­Myon. 660– 900m. 37°44’57”N, 128°34’19”E. Ky ǒ ngsangnam­Do Province. Macheon. Chirisan Mt. 705m. 35°20’55”N, 127°38’21”E. Samjeong­Li. Macheon. Chirisan Mt. 6– 800m. 35°21’36”N, 127°38’25”E.

Material examined. 1Ψ: 6/VI/2002, Chŏllabuk­Do Province, Naejangsan N.P. South entrance, 9ɗ, 3Ψ: 19 20/V/ 1999 2001, Chŏllabuk­Do Province, Sŏngsusan Mt. Resort area, Sŏngsu­Myŏn, 1ɗ: 12/VI/2004, Kang­won­Do Province, Chunchŏn­Shi, Namsan­ Myon, Kangchon; 10Ψ: 7 8/VI/2003, Kang­won­Do Province, Odaesan N. P., Chinbu­ Myon 660– 900m.; 15ɗ, 5Ψ: 18/V/2003, Kyŏngsangnam­Do Province, Macheon, Chirisan Mt. 705m.; 25ɗ, 13Ψ: 11 25/V/2002, Kyŏngsangnam­Do Province, Samjeong­Li, Macheon, Chirisan Mt. 6– 800m. Malaise trap.

Field notes. N. cothurnatus univittatus occupies sympatric and allopatric habitats of N. angusticornis and N. castaneipennis .

Neoitamus zouhari Hradsk ý, 1960 ( Figs 11 , 24 , 45, 46 , 55 & 56 )

Neoitamus zouhari Hradskÿ, 1960: 80 .

Medium sized metallic blue or brown flies, 15–19mm. Mid femur with distinct rows of strong dorsal and anterodorsal bristles, a weak basal row of anteroventral black bristles, and strong row of ventral black bristles. Male abdominal tergites metallic blue. Female abdominal tergites dull brown. The male gonostylus is distinctly hooked at apex ( Fig. 24 ).

Head: Face black. Gibbose area in lateral aspect evenly contoured, projecting ventrally half way on eye margin. Gena black integument and sparse black hair. Mystax with long, black hair dorsally, abundant long white ventral hair. Palpus with long yellow hair. Long white genal hair merging into black proclinate lateral occipital bristles. Black postocular hair strongly proclinate, extending over eye margin. Proclinate orbital hair black. Occeller tubercle large with long black hair. Thorax: Paramedian scutal and lateroscutal stripes dark brown. Acrostical black hair in two rows. Pronotum with medial black bristles and white hair. Pleurae gold / gray pollinose with sparse white and black hair. Anepisternum with sparse black hair on margin. Katepisternum with sparse white hair medially. Anepimeron with sparse black and white hair. Katatergite with a sparse vertical row of black hair. Metepisternum with a weak row of black hair. Anatergite with long black hair. Humeral callus with long black hair. Chaetotaxy with long sparse, black posthumeral hair; 3 notopleural; 3 supraalar; 4 postalar bristles. Dorsocentral hair long and black. Scutellar margin with 4 bristles, disc with sparse black hair. Legs: Black and red/ orange with predominantly short black, white hair and black bristles. Coxae gold/gray pollinose with long black and white hair. Fore femur black, red/orange at apex with a basal row of black bristles. Mid femur with distinct rows of strong dorsal and anterodorsal bristles, a weak basal row of anteroventral black bristles and a strong row of ventral black bristles, red/orange at basal apex. Basal half of hind femur red/orange, distil half black with orange and black bristles. Fore, mid and hind tibiae red/orange, distil apices black with black bristles. Basitarsi black, tinged red/orange laterally. Other tarsomeres black with black bristles. Wings: Tinged black throughout. Abdomen: Shiny blue/black with short sparse white hair in male; female tergites dull brown. Tergite 1 dark brown with short black medial hair, long white hair and black and yellow bristles on lateral marginal surface. Tergite 2 basal portion brown, distal apex blue/black in male; long black marginal hair and black lateral margin bristles. Tergites 3–5 metallic blue/black in male with short white medial hair and black lateral margin bristles; females dull brown. Tergites 6 7 with long white sparse hair with white lateral margin hair. Sternites dull black with sparse long white and black hair. Gonostylus hooked with an acutely sharp and tapered apex ( Fig. 24 ). Ovipositor elongated, compressed, similar to N. angusticornis ( Fig. 65 ).

South Korean distribution. Ch ǒ llabuk ­Do Province. Pyŏngsanbando N. P. Puan­ Gun. 37°44’57”N, 128°34’19”E. Ch ǒ llanam­Do Province. Wolch’ulsan N. P. Kangjin­ Gun. 200 550m. 34°45’14”N, 126°41’11”E. Ch’ungch’ ǒ ngnam­Do Province. South Taean Peninsula. Konam­Myon. Saetbyeol Beach. 36°24’47”N, 126°22’12’E.

Material examined. 2ɗ, 5Ψ: 8–18/V/2004, Chŏllabuk­Do Province, Pyŏngsanbando N. P. Puan­Gun; 1ɗ, 2Ψ: 26/V/2004, Chŏllanam Do Province, Wolchulsan N. P. Kangjin­ Gun 200–550m; 2ɗ, 5Ψ: 24–25/V–VI/2004, Ch’ungch’ŏngnam­Do Province, South Taean Peninsula, Konam­Myon. Saetbyeol Beach.

Field notes. N. zouhari is stenotopic and allopatric with other species of Neoitamus .

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 49 – 57. Male epandria and sternite. 49 – 50. Neoitamus angusticornis lateral & dorsal. 51 – 52. Neoitamus castaneipennis lateral & dorsal. 53 – 54. Neoitamus cothurnatus univittatus lateral & dorsal. 55 – 56. Neoitamus zouhari lateral & dorsal. 57. Machimus cf. pastshenkoae male sternite 8 and hypandrium. Scale bars = 1 mm.

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.