Rhipidia (Rhipidia) hypomelania ( Alexander, 1936 )

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 : 215-216

Rhipidia (Rhipidia) hypomelania ( Alexander, 1936)

( Figs. 30–33 )

Limonia (Rhipidia) hypomelania Alexander, 1936: 236 . Type locality: Mt. Omei, Sichuan ( China).

Diagnosis. Male antenna with eight bipectinate flagellomeres. Mesonotum uniformly brownish yellow; pleuron brownish black with dorsal part brownish yellow. Wing pale yellow with numerous very pale brown spots; most spots very indistinct and making wing almost unicolor; Sc1 ending beyound one-third length of Rs, basal section of CuA1 proximad of fork of M. Lobe of gonostylus with five or six rostral spines.

Description. Male. Body length 6.8 mm, wing length 7.8 mm.

Head (fig. 31). Black, dusted with grayish white. Antenna 1.3–1.5 mm long. Scape and pedicel brownish black, flagellomeres one to eleven grayish white with basal enlargements and branches dark brown, terminal flagellomere dark brown. First flagellomere stout basally; each of flagellomeres two to nine inclusive with two branches which are the longest at fourth or fifth flagellomere and nearly one-half longer than corresponding flagellomere; flagellomeres ten and eleven inclusive with single short branch; terminal flagellomere longated, exceeding penultimate. Proboscis and palpus black.

Thorax(fig. 30). Generally brownish yellow to brownish black, dusted with grayish white. Mesonotum uniformly brownish yellow. Pleuron brownish black with upper part brownish yellow. Coxae brownish black; trochanters brownish yellow to brownish black; femora yellow with bases darker; tibiae yellow; tarsi yellow with terminal segments brownish yellow. Wing (fig. 32) pale yellow; all cells with numerous very pale brown spots; most spots very indistinct and making wing almost unicolor; similar in size but darker spots at middle area of cell Sc, origin of Rs, fork of Sc, and wing tip;veins yellow, darker in clouded areas. Venation: Sc1 ending beyound onethird length of Rs, Sc2 near its tip; basal section of CuA1 proximad of fork of M. Halter 0.7–0.8 mm long, yellow with knob darker.

Abdomen. Tergites and sternites brownish yellow.

Hypopygium (fig. 33). Gonocoxite with a single simple ventromesal lobe. Clasper of gonostylus arched at 2/3 length, suddenly narrowed to apical spine. Lobe of gonostylus medium-sized; rostral prolongation long with five or six long spines near tip. Paramere with mesoapical angle brownish yellow.

Female. Unknown.

Specimens examined. Holotype male (USNM), China: Sichuan, Mt. Omei (1676–3353 m), 1934. VIII. 16– 20, Graham. The hypopygium is mounted on a similarly labeled microscope slide. Three legs are still attached or affixed to the body, and the remaining three legs are absent.

Distribution. China (Sichuan).

Remarks. For description and illustration of this species, also see Alexander (1936).

Figures

FIGURES 30 – 33. Rhipidia (Rhipidia) hypomelania (Alexander, 1936) (holotype). 30: Habitus of male, lateral view; 31: Head of male, lateral view; 32: Wing; 33: Gonocoxite, clasper of gonostylus and lobe of gonostylus, ventral view. Scale bar: 30 = 2.0 mm; 31 = 0.5 mm; 32 = 1.0 mm; 33 = 0.2 mm.