Platypalpus shuimogouanus, Wang & Wang & Yang & Lin, 2024

Wang, Yuanyuan, Wang, Ning, Yang, Ding & Lin, Kejian, 2024, The genus Platypalpus Macquart (Diptera, Hybotidae, Tachydromiinae) from Inner Mongolia, China, with the description of four new species, ZooKeys 1198, pp. 87-99 : 87

Platypalpus shuimogouanus sp. nov.

Figs 5 , 18-21

Diagnosis.

Two pairs of vt. Mid femur with 1 row of 3 long blackish outer pv on apical half. Mid tibia with 1 short, pointed, acute apical spur. First flagellomere 2.1 times longer than wide. R4+5 and M little convergent apically; crossveins r-m and m-m very narrowly separated.

Description.

Male (Fig. 5 ). Body length 2.7 mm, wing length 3.3 mm.

Head black with distinct pale gray pollen; clypeus shiny black. Eyes narrowly separated on frons and face. Hairs yellowish on head, bristles blackish. Ocellar tubercle with 2 oc and 2 very short posterior hairs. 2 pairs of vt, outer vt short and curved inward. Antenna (Fig. 18 ) black; first flagellomere moderately long, subtriangular, 2.1 times longer than wide, distinctly blackish pubescent; arista black very long, 2 times longer than first flagellomere, with short blackish pubescence. Proboscis nearly blackish, 0.9 times as long as head height, palpus longer than wide, lobate, obtuse apically, yellowish, with 4 brown bristles (2 apical bristles long).

Thorax black with thin pale grey pollen; mesonotum subshiny black with thin pollen; mesopleuron shiny black except postero-upper margin. Hairs on thorax yellowish, bristles yellow; mesonotum with dense hairs, acr and dc multiseriate and not separated; 1 h, 2 npl of subequal lengths, 1 psa, 1 presc; 2 pairs of sc (lateral pair short and weak, about 1/3 as long as apical pair).

Legs yellow, but mid tibia brown, all tarsi brown to dark brown except tarsomere 1 brownish yellow with brown tip. Hairs on legs yellowish, but hairs on tibia and tarsi partly blackish. Fore femur weakly thickened, 1.2 times wider than hind femur; mid femur distinctly thickened, 1.5 times wider than hind femur. Fore femur with 1 row of pv (about 1/2 as long as femur width); mid femur with 2 rows of short spine-like black bristles (pv slightly longer than av) and 1 row of 3 long blackish outer pv on apical half. Mid tibia with 1 row of short, black, ventral bristles; apical spur short, pointed, shorter than tibia width.

Wing hyaline, veins dark brown, R4+5 and M little convergent apically; 1st basal cell slightly shorter than 2nd basal cell, crossveins r-m and m-m very narrowly separated. Squama yellow with yellowish hairs. Halter yellowish.

Abdomen black, with pale gray pollen. Hairs and bristles on abdomen yellowish. Hypopygium (Figs 19-21 ): left epandrial lamella wide, with wide and blunt apex. Right epandrial lamella very wide and large; right surstylus (Fig. 20 ) nearly fused with right epandrial lamella, somewhat narrowed, distinctly curved inward, with distinctly apical incision bearing several short marginal hairs. Left cercus (Fig. 19 ) nearly finger-like, slightly broader at base; right cercus almost as long as left cercus, finger-like.

Female. Unknown.

Type material.

Holotype: male, China, Inner Mongolia, Helan Mountain back, 2010.VIII.4, Yan Li (CAU).

Etymology.

The specific name refers to the type locality Shuimogou.

Remarks.

The new species belongs to the P. pallidiventris - Musca cursitans group. It is somewhat similar to P. henanensis Saigusa et Gao from Henan of China ( Saigusa and Yang 2002), but maybe separated from the latter by the yellow antenna and mid femur with 1 row of 3 long blackish outer pv on the apical half. In P. henanensis , the antenna is black, and the mid femur has 1 row of outer pv along the whole length ( Yang and Yu 2005).

Figures

Figures 2 - 5. Habitus, lateral view 2 P. flavipilosus sp. nov., male (dissected) 3 P. longus sp. nov., male (dissected) 4 P. shengi sp. nov., male (dissected) 5 P. shuimogouanus sp. nov., male (dissected). Scale bars: 1 mm.

Figures 18 - 21. P. shuimogouanus sp. nov., male 18 antenna, lateral view 19 genitalia, dorsal 20 right surstylus 21 left epandrial lamella. Scale bars: 0.2 mm.