Zygoneura (Pharetratula) disparilis Zhang & Wu, 2010

Shah, Bismillah, Shao, Yisa, Du, Hong, Wang, Yang & Huang, Junhao, 2024, Taxonomy and DNA barcoding of the dark-winged fungus gnat genus Zygoneura Meigen (Diptera: Sciaridae) from China, with revision of the type materials, Zootaxa 5496 (3), pp. 377-400 : 385-386

Zygoneura (Pharetratula) disparilis Zhang & Wu, 2010

( Figs 5A–C )

Zygoneura (Pharetratula) disparilis Zhang & Wu, 2010 [ Zhang et al. (2010): 43 ; Shin et al. (2014): 562; Huang et al. (2020): 360].

Type locality. China: Yunnan Province, Yingjiang .

Type Material. Holotype (1♂) in Coll. ZAFU ( China).

Material examined. Holotype [ SM00789 ], 1♂, Yunnan Province, Yingjiang, Tongbiguan nature reserve , 24°37.667′ N, 97°37.893′ E, 1513 m a.s.l. 16.V.2009, leg. Su-Jiong Zhang.

Additional description. Male. Head dark brown, antenna and maxillary palpus yellowish. Eye bridge three facets wide. Face with 5–6 setae. Maxillary palpus with three segments, 3rd segment long ( Zhang et al. 2010: 42, Fig. 1B ). Fourth antennal flagellomere 2.83 times as long as wide, with neck much longer, body with mostly short setae and with a row of distinctly elongated setae near the neck ( Fig. 5C ). Thorax light brown. Wing membrane without macrotrichia. M 1, M 2, CuA 1, CuA 2, r-m with no setae. stM faded in the specimen. Legs ( Fig. 5A ) stramineous. Tarsal claws three-toothed. Hypopygium ( Fig. 5B ) yellowish brown. Gonocoxae nearly as long as gonostyli, ventral medial margin with two distinct groups of setae. Gonostylus ( Fig. 5B ) stout, with two megasetae of unequal length overlap each other, apex attenuated, broadly round with numerous short setae. Tegmen membranous, higher than wide. Aedeagus short, slender ( Zhang et al. 2010: 42, Fig. 1E ). For detailed description, see Zhang et al. (2010).

Remarks. Only holotype seen, 1♂ paratype [SM00824] lost, 1♂ paratype [SM00919] on loan and not examined in this study. This species resembles Z. (Pharetratula) flavicornis (Mamaev) and Z. (Pharetratula) bidens (Mamaev) in having a pair of megasetae but can be recognized by the gonostylus attenuated at the apex, and two megasetae on a shorter dorsal lobe, of unequal length, overlap each other in ventral view ( Fig. 5B ).

Distribution. China: Yunnan ( Zhang et al. 2010).

Figures

FIGURE 1. Wing photograph of Zygoneura (Pharetratula) subdivergens (Mohrig & Mamaev) with vein nomenclature indicated. Abbreviations of veins, bM: base of vein M; Sc: subcostal vein; R: radius (radial vein); r-m: radial medial cross vein; Rs: radial sector; stM: fused first and second branch of media; R1: anterior branch of radius; C: costal vein; R 4+5: third branch of radius; c: distance between apex of R 4+5 and end of costal vein; w: distance between apex of R 4+5 and apex of M1; M1: first branch of media; M2: second branch of media; CuA1: first branch of anterior cubital vein; CuA2: second branch of anterior; an lb: anal lobe; stem CuA: fused first and second branch of anterior cubital vein.

FIGURE 5. Zygoneura (Pharetratula) disparilis Zhang & Wu. i: slide, front side; ii: slide, flip side; A: habitus, lateral view; B: hypopygium, ventral view; C: fourth antennal flagellomere.