Anastoechus fulvus, Yao, Gang, Yang, Ding & Evenhuis, Neal L., 2010

Yao, Gang, Yang, Ding & Evenhuis, Neal L., 2010, The genus Anastoechus Osten Sacken, 1877 (Diptera: Bombyliidae) from China, with descriptions of four new species, Zootaxa 2453, pp. 1-24 : 8-9

publication ID	https://doi.org/ 10.5281/zenodo.195260
DOI	https://doi.org/10.5281/zenodo.6196591
persistent identifier	https://treatment.plazi.org/id/3432510A-4102-FFD2-DADB-FAD04CF2FB4F
treatment provided by	Plazi
scientific name	Anastoechus fulvus
status	sp. nov.

Treatment

Anastoechus fulvus View in CoL sp. nov.

( Figs. 7 View FIGURES 1 – 11 , 17 View FIGURES 11 – 20 , 57–60 View FIGURES 57 – 60 )

Diagnosis. Scutellum reddish yellow except anterior edge black. Leg with femora black with a yellow tip. Sternites yellow with long dense white hairs, female with sternites yellow at posterior edge and reddish yellow at middle. Epiphallus a-frame, obtuse at tip in dorsal view.

Description. Male. Body length 10 mm, wing length 11 mm.

Head ( Fig. 7 View FIGURES 1 – 11 ) black. Hairs on head black and yellowish; frons narrowing directed distally, with long sparse black hairs, face with long dense yellowish hairs and long sparse black hairs; occiput with long sparse yellowish hairs. Antenna black except yellow at joint and tip of flagellomere; scape elongate with yellowish and black hairs; first flagellomere elongate, bare, with a stylus at tip. Proboscis black, bare, nearly four times longer than head.

Thorax black. Hairs on thorax mostly yellow; postpronotal lobe with long yellow hairs, mesonotum with long sparse yellow hairs; thorax almost bare on back, anepisternum and katepisternum with long dense white hairs. Scutellum reddish yellow except anterior edge black. Tibiae and tarsi yellow, femora black except yellow at tip. Hairs on legs mostly yellow, bristles yellow. Femora with long sparse white hairs and dense white scales; tibiae and tarsi with short yellow hairs. Mid femur with three av apically; hind femur with six av. Fore tibia with 10 ad, 11 pd, 10 av; mid tibia with nine ad, 13 pd, eight av, 10 pv; hind tibia with nine ad, 12 pd, nine av and eight pv. Wing ( Fig. 17 View FIGURES 11 – 20 ) brown at base and anterior edge, hyaline at tip and posterior edge.

Vein r-m close to tip of cell dm, cell r5 closed. Base of vein C with brush-like long black and yellowish bristles. Halteres yellow.

Abdomen black with pale dust. Hairs on abdomen mostly white; dorsum nearly bare with some broken setaes pores posteriorly. Sternites yellow with long dense white hairs.

Male genitalia ( Figs. 57–60 View FIGURES 57 – 60 ). Epandrium [broken]; gonocoxite with black hairs apically, distinctly narrowing apically in ventral view; gonostylus elongate, its tip acute in lateral view; epiphallus a-frame, obtuse at tip in dorsal view, epiphallus with a long and narrow tip in lateral view.

Female. Body length 13 mm, wing length 12 mm. Similar to male, but wing with tegula with brown bristles; abdomen with sternites almost black and bare, sternites yellow at posterior edge and reddish yellow at middle.

Type material. Holotype male, CHINA: Inner Mongolia, Zuoqi, Beisi (N 38° 58’ 37’’ E 105° 54’ 14’’), 21. VII. 1990 ( IMNU); Paratypes 1 female, CHINA: Inner Mongolia, Balin, Hanshan (N 44° 36’ 58’’ E 119° 21’ 33’’), 19. VIII. 1988 ( IMNU); 1 male, CHINA: Shandong, Binzhou, Wudi (N 37° 22’ 50’’ E 117° 36’ 49’’), IX. 1987, Shuguo Du ( CAU); 1 male, CHINA: Inner Mongolia, Wuchuan, Daqingshan (N 41° 00’ 18’’ E 111° 26’ 14’’), 6. VIII. 2007, Yanping Du ( IMAU); 1 male, CHINA: Inner Mongolia, Huhehaote, Xiaojinggou (N 40° 59’ 06’’ E 111° 50’ 50’’), 22. VIII. 2005, Xinyue Kang ( IMAU); 1 female, CHINA: Inner Mongolia, Wuchuan, Heiniugou (N 41° 14’ 57’’ E 111° 45’ 50’’), 22. VIII. 2005, Xinyue Kang ( IMAU); 2 females, CHINA: Inner Mongolia, Wuchuan, Heiniugou (N 41° 14’ 57’’ E 111° 45’ 50’’), 23. VIII. 2005, Junyi Hao ( IMAU); 1 female, CHINA: Inner Mongolia, Huhehaote, Xiaojinggou (N 40° 59’ 06’’ E 111° 50’ 50’’), 22. VIII. 2005, Xiaoyong Duan ( IMAU); 1 female, CHINA: Inner Mongolia, Huhehaote, Xiaojinggou (N 40° 59’ 06’’ E 111° 50’ 50’’), 24. VIII. 2005, Xuemei Wang ( IMAU).

Distribution. China (Inner Mongolia, Shandong).

Etymology. The species epithet derives from the Latin “ fulvus ” [= reddish yellow]; referring to the reddish yellow color of the scutellum.

Remarks. The new species is similar to A. asiaticus Becker , but it can be separated from the latter by the occiput covered with the long sparse yellowish hairs, the scutellum reddish yellow, and the tip of the epiphallus straight. In A. asiaticus , the occiput is covered with the long sparse black and white erect hairs, the scutellum is black, and the tip of the epiphallus is slightly curved in lateral view ( Becker, 1916).