Villa aquila, Yao, Gang, Yang, Ding & Evenhuis, Neal L., 2009

Yao, Gang, Yang, Ding & Evenhuis, Neal L., 2009, Four new species and a new record of Villa Lioy, 1864 from China (Diptera: Bombyliidae), Zootaxa 2055, pp. 49-60: 51-52

publication ID

http://doi.org/ 10.5281/zenodo.186683

persistent identifier

http://treatment.plazi.org/id/03BF878E-1123-FFFB-F7E7-FF3AA46707F8

treatment provided by

Plazi

scientific name

Villa aquila
status

sp. nov.

Villa aquila   sp. nov.

( Figs. 1 View FIGURES 1 – 5 , 6–11 View FIGURES 6 – 11 )

Diagnosis. Dorsum with dense long yellowish hairs laterally except tergites 5–6 with black hairs and tergite 7 with dense white and black hairs; dorsum with dense black recumbent scales except tergite 4 with white recumbent scales anteriorly and tergites 1, 5, and 6 with white recumbent scales posteriorly. Epiphallus wide clubbed, with an irregular tip in dorsal view; distiphallus rather narrow, long and slightly curved at middle in lateral view.

Description. Male. Body length 14–15 mm, wing length 12–14 mm.

Head black with grey pollen; ocellar tubercle dark brown. Hairs on head black and yellowish; frons with dense black erect hairs, face with dense yellowish erect hairs; occiput with aparse short black hairs and white scales become denser near eyes, a row of brown erect hairs on edge. Antenna black; scape twice longer than wide, with dense black hairs; pedicel nearly as long as wide, with short sparse black hairs; first flagellomere cone-shaped, bare. Antennal ratio: 8: 1: 5. Proboscis dark brown with yellow and black hairs; palpus dark brown with black hairs.

Thorax black with black scales. Hairs on thorax mostly yellow, bristles yellow; postpronotal lobe with long yellow hairs, mesonotum with row of long yellow hairs at anterior margin and three long yellow lateral bristles near base of wing, postalar callus with six yellow bristles; thorax with black scales on back but bare in middle. Scutellum with sparse yellow hairs; scales on scutellum black; scutellum with six bristles each side, with apical scutellar bristles and subapical scutellar bristles black, and basal scutellar bristles yellow. Legs dark brown with black scales except hind femur and tibia with yellowish scales. Hairs on legs mostly black, bristles black. Femora with sparse long black hairs; tibiae and tarsi with short black hairs. Mid femur with four av apically; hind femur with six av apically. Fore tibia with eight ad, 10 pd, and seven pv; mid tibia with eight ad, 12 pd, eight av and 14 pv; hind tibia with 10 pv and with all hairs bristle-like. Wing ( Fig. 1 View FIGURES 1 – 5 ) mostly hyaline with metalline reflecting except cells sc, c, and basal half of cell r 1 and base of wing dark brown. Base of vein C with brush-like long black hairs and white scales, tegula with white scales. Wing with basicosta strong; vein r-m nearly 1 / 3 length of discal cell apically. Halteres pale.

Abdomen black. Hairs on abdomen mostly yellowish; dorsum with dense long yellowish hairs laterally except tergites 5–6 with black hairs laterally and tergite 7 with dense white and black hairs laterally; dorsum with dense black recumbent scales except tergite 4 with white recumbent scales anteriorly and tergites 1, 5 and 6 with white recumbent scales posteriorly. Sternites with dense yellow erect hairs and dense white recumbent scales except sternites 3, 5, and 6 lack white scales.

Male genitalia ( Figs. 6–11 View FIGURES 6 – 11 ). Epandrium subquadrate, with dense long black bristles apically, nearly as long as wide; cercus well exposed in lateral view; epandrium a little longer than wide, slightly narrowed from base to tip in dorsal view; gonocoxa with numerous black bristle-like hairs apically, distinctly narrowing apically in ventral view; gonostylus subquadrate, its tip obtuse and slightly curved at middle in lateral view; epiphallus broad, clubbed, with a trifurcate tip in dorsal view, distiphallus narrow, long and slightly curved at middle in lateral view.

Female. Body length 16–17 mm, wing length 15–16 mm. Similar to male, but wing with tegula lacks white scales; tergites 1–3 with yellowish recumbent scales anteriorly and tergites 5– 6 with yellowish recumbent scales posteriorly.

Type material. Holotype male, CHINA: Ningxia, Longde, Sutai (N 106 ° 14 ’ E 35 ° 62 ’), 24. VI. 2008, Gang Yao; Paratypes 1 male, CHINA: Ningxia, Longde, Sutai (N 106 ° 14 ’ E 35 ° 62 ’), 24. VI. 2008, Gang Yao; 1 male, CHINA: Ningxia, Longde, Fengtai (N 106 ° 14 ’ E 35 ° 62 ’), 27. VI. 2008, Tingting Zhang; 6 males, CHINA: Ningxia, Longde, Fengtai (N 106 ° 14 ’ E 35 ° 62 ’), 28. VI. 2008, Gang Yao; 6 males, CHINA: Beijing, Mentougou, Lingshangudao (N 114 ° 40 ’ E 38 ° 47 ’), 9. VI. 2008, Gang Yao; 4 males, CHINA: Beijing, Mentougou, Longmenjian (N 114 ° 40 ’ E 38 ° 47 ’), 8. VI. 2008, Gang Yao; 1 male, CHINA: Beijing, Mentougou, Longmenjian (N 114 ° 40 ’ E 38 ° 47 ’), 15. VIII. 2007, Gang Yao; 1 male, CHINA: Beijing, Mentougou, Xiaolongmen (N 114 ° 40 ’ E 38 ° 47 ’), 7. VI. 2008, Gang Yao; 1 male, CHINA: Yunnan, Kunming, Songhuabashuiku (N 103 °00’ E 26 ° 48 ’), 24. VII. 2006, Gang Yao; 1 male, CHINA: Ningxia, Tongxin, Daluoshan (N 106 ° 17 ’ E 37 ° 19 ’), 13. VII. 2007, Gang Yao; 1 female, CHINA: Beijing, Mentougou, Xiaolongmen (N 114 ° 40 ’ E 38 ° 47 ’), 7. VI. 2008, Gang Yao ( CAU); 1 female, CHINA: Beijing, Mentougou, Longmenjian (N 114 ° 40 ’ E 38 ° 47 ’), 15. VIII. 2007, Gang Yao; 1 female, CHINA: Beijing, Changping, Heishanzhai (N 116 ° 23 ’ E 40 ° 21 ’), 5. IX. 2006, Haiqing Wang; 1 female, CHINA: Hebei, Kongjian, Yangjiaping (N 115 °02’ E 39 ° 57 ’), 11. VIII. 2007, Gang Yao; 1 female, CHINA: Beijing, Mentougou, Baihuagu (N 115 ° 36 ’ E 39 ° 52 ’), 2. IX. 2008, Tingting Zhang.

Distribution. China (Beijing, Hebei, Ningxia, Yunnan).

Etymology. The species epithet derives from the Latin “ aquila   ” [= dark-colored]; referring to infuscation on the anterior part of the wing.

Remarks. The new species is similar to V. fasciata (Meigen)   , but it can be separated from the latter by tergite 4 with white recumbent scales anteriorly and tergites 1, 5, and 6 with white recumbent scales posteriorly. In V. fasciata   , tergites 2–3 have yellowish recumbent scales antero-laterally, tergite 4 has yellowish recumbent scales anteriorly, and tergites 5–6 have yellowish recumbent scales posteriorly.

CAU

China Agricultural University

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Bombyliidae

Genus

Villa