Rhipidia (Rhipidia) monoctenia (Alexander, 1935)

Zhang, Xiao, Li, Yan & Yang, Ding, 2014, A review of the genus Rhipidia Meigen from China, with descriptions of seven new species (Diptera, Limoniidae), Zootaxa 3764 (3), pp. 201-239 : 223-224

Rhipidia (Rhipidia) monoctenia (Alexander, 1935)

( Figs. 52–55 )

Limonia (Rhipidia) monoctenia Alexander, 1935a: 210 . Type locality: Mt. Omei, Sichuan ( China).

Diagnosis. Male antenna with eight unipectinate flagellomeres. Pleuron brown with a conspicuous black longitudinal stripes ( Alexander 1935a). Wing grayish white with mostly combined brown spots; combined spots very extensive and almost obliterating lighter areas; four large spots darker on costal region; Sc1 ending near onethird length of Rs, basal section of CuA1 proximad of fork of M. Lobe of gonostylus with two or three rostral spines ( Alexander 1935a).

Description. Male. Wing length 6.5 mm.

Antenna (fig. 52) about 1.7 mm long. Flagellomeres one to ten pale yellow with basal enlargements and branches brownish black, remaining flagellomeres brownish black. Each of flagellomeres two to nine inclusive with one branches which is the longest at fourth or fifth flagellomere and slightly longer than corresponding flagellomere; flagellomeres ten and eleven enlarged but not pectinate; terminal flagellomere longated, exceeding penultimate.

Femur of fore leg (fig. 53) brown to brownish black with tip brownish yellow; tibiae and tarsi brownish black. Hairs on legs brown. Wing (fig. 54) grayish white; all cells with mostly combined brown spots; combined spots very extensive and almost obliterating lighter areas; four large spots darker on costal region: spot over basal of cell Sc, over middle area of cell Sc, over fork of Sc and origin of Rs, and over R2 and tip of R1; veins brownish black. Venation: Sc1 ending near one-third length of Rs, Sc2 near its tip; basal section of CuA1 proximad of fork of M.

Hypopygium (fig. 55). Gonocoxite with a single simple ventromesal lobe. Clasper of gonostylus arched at 2/3 length, suddenly narrowed to apical spine. Lobe of gonostylus moderate-sized; rostral prolongation relatively long with two spines near midlength.

Female. Unknown.

Specimens examined. Holotype male (USNM), China: Sichuan, Mt. Omei (3292 m), 1934. VIII. 18, Graham. One antenna, one wing, one fore leg and hypopygium are mounted on a similarly labeled microscope slide. The rest of the specimen was not found in USNM.

Distribution. China (Sichuan).

Remarks. For description and illustration of this species, also see Alexander (1935a).

Figures

FIGURES 52 – 55. Rhipidia (Rhipidia) monoctenia (Alexander, 1935) (holotype). 52: Antenna of male; 53: Fore leg of male; 54: Wing; 55: Gonocoxite, clasper of gonostylus and lobe of gonostylus, dorsal view. Scale bar: 52 = 0.2 mm; 53 = 2.0 mm; 54 = 1.0 mm; 55 = 0.2 mm.