Elephantomyia (Elephantomyodes) tianmushana, Zhang, Xiao, Li, Yan & Yang, Ding, 2015

Zhang, Xiao, Li, Yan & Yang, Ding, 2015, A review of the genus Elephantomyia Osten Sacken from China, with descriptions of two new species (Diptera, Limoniidae), Zootaxa 3919 (3), pp. 553-572 : 570

Elephantomyia (Elephantomyodes) tianmushana sp. nov.

( Figs. 58–64 )

Diagnosis. Rostrum slightly longer than half of body. Mesonotum yellow to brownish yellow. Pleuron uniformly yellow. First tarsi of legs with distal half snowy white. Wing with darker spots on stigma; basal section of CuA1 at 1/4 length of cell dm, cell a2 short and narrow. Abdominal segments more or less bicolored.

Description. Male. Body length 10.0– 10.5 mm, wing length 7.5–8.0 mm, rostrum length 5.5–6.0 mm.

Head (fig. 59). Pale brownish yellow. Hairs on head brown. Antenna length 1.8–2.0 mm. Scape pale brownish yellow; pedicel and flagellomeres dark brown. Flagellomeres except first flagellomere nearly equal in length; first flagellomere elongate and slightly enlarged, nearly twice as long as second flagellomere. Rostrum black with black hairs.

Thorax. Generally yellow to brownish yellow. Pronotum brownish yellow. Mesonotum yellow to brownish yellow. Scutum and scutellum yellow. Mediotergite yellow with posterior area brown (fig. 60). Pleuron (fig. 58) uniformly yellow. Hairs on thorax brown. Coxae yellow; trochanters pale yellow; femora brownish black to black with bases paler; tibiae black; first tarsi black with distal half snowy white, remaining tarsi snowy white, terminal tarsi infuscated. Hairs on legs black, white on snowy white regions of tarsi. Wing (fig. 61) pale brown, darker spot on stigma; veins brown. Venation: Sc1 ending at 3/4 of Rs, Sc2 near its tip; basal section of CuA1 beyond fork of M and at 1/4 of cell dm; cell a2 short and narrow. Haltere length 1.6–1.8 mm, yellow with knob black.

Abdomen (fig. 58). Tergites yellow with caudal halves brownish black. Sternites yellow. Terminal three segments uniformly brownish black. Hairs on abdomen black.

Hypopygium (figs. 63–64). Generally brownish black. Posterior margin of tergite nine with broad and shallow U-shaped notch. Gonocoxite conical with long thin hairs on inside face. Clasper of gonostylus slender and slightly curved, tip bidentate. Lobe of gonostylus stout and curved, tip slender and blunt. Interbase schistose and nearly oval, tip relatively acute. Paramere long, straight and club-shaped, tip blunt. Aedeagus relatively short, slender and curved dorsally, nearly 1.5–2.0 times as long as paramere.

Female. Body length 11.0–12.0 mm, wing length 8.0 mm, rostrum length 5.5–6.5 mm. Similar to male. Tenth tergite brownish black. Cercus dark brown. Hypogynial valve brownish yellow with base and tip darker. Tip of hypogynial valve at 3/5 of cercus (fig. 62).

Type material. Holotype male ( CAU), China: Zhejiang, Hangzhou, Mt. Tianmu (30°19'15"N 119°26'4"E, 1000 m), 2013. VI. 30, Xia Zhang o. Paratypes: 2 males 5 females ( CAU), same data as holotype.

Distribution. China (Zhejiang).

Etymology. The species is named after the type locality Tianmushan.

Remarks. This new species is somewhat similar to E. angusticellula in having the similar body color and male hypopygium, but it can be separated from the latter by the wing with only one dark spot on stigma (fig. 61), and the first tarsi of legs with distal half snowy white (fig. 58). In E. angusticellula , the wing has dark spots on not only stigma but also cell Sc (fig. 42), and distal 1/3 of the first tarsi of legs are snowy white (figs. 38, 41). In addition, cell a2 of the wing in the new species is not so short or narrow as in E. angusticellula .

Figures

FIGURES 58 – 62. Elephantomyia (Elephantomyodes) tianmushana sp. nov. 58: Male habitus, lateral view; 59: Head, dorsal view; 60: Thorax, dorsal view; 61: Wing; 62: Female hypopygium, lateral view. Scale bar: 58 = 2.0 mm; 59 – 60 = 0.5 mm; 61 = 1.0 mm; 62 = 0.2 mm.

FIGURES 63 – 64. Elephantomyia (Elephantomyodes) tianmushana sp. nov. 63: Male hypopygium, dorsal view; 64: Male hypopygium, ventral view. Scale bar: 63 – 64 = 0.2 mm.