Czernyola planipalpis, Yang & Yin & Xi, 2021

Yang, Shuai-Lai, Yin, Xin-Ming & Xi, Yu-Qiang, 2021, Three new species of the genus Czernyola Bezzi, 1907 (Diptera, Clusiidae) from China, ZooKeys 1029, pp. 175-183 : 175

Czernyola planipalpis sp. nov. Figures 7-12

Type material.

Holotype: ♂, China, Yunnan, Xishuangbanna, Mengla County, Menglun, 556 m, 08.VII.2016, leg. Xiao-Li Li. Paratypes: 2 ♂♂, China, Tibet, Motuo, Beibeng, 886 m, 10.VII.2017, leg. Qi-Cheng Yang.

Diagnosis.

Head brown to darkish brown; first flagellomere entirely white or dark brown. Scutum yellow with brown shield-like marking at middle. Surstylus without tubercles. Pregonite thin, with 3 strong setae nearly equal in length and many microsetulae.

Description.

Male. Body length 2.9 mm, wing length 2.4 mm.

Head (Fig. 7 ) brown, postgena slightly lighter; frons brown; occiput darkish brown; gena ~ 1/6 as high as eye. Setae yellowish and setulae black, four fronto-orbital setae, hind seta short; genal setae and vibrissa thin. Antenna yellowish, first flagellomere yellowish white, pedicel setose with distinctly long setae dorsally. Arista sparsely short plumose. Palpus brown.

Thorax yellow, pronotum with brown spot, mesonotum with large brown medial shield. Prescutellar acrostichal seta absent. One postpronotal seta, 2 notopleural setae, 2 dorsocentral setae, 1 long postsutural intra-alar seta, 1 postalar seta, 2 lateral scutellar setae, 1 apical scutellar seta, 1 long anepisternal seta, 1 katepisternal seta. Scutellum brown, microsetulae on the margin. Mediotergite brownish. Thoracic pleura whitish. Anepisternum and katepisternum brown, with several setulae. Legs yellowish white. Wing (Fig. 8 ) hyaline, with anterodistal infuscation, 1 hyaline small spot on r4+5, veins brown, M1 ratio: distal portion of M1 (the part beyond Dm-Cu) 3.5 × as long as Dm-Cu. Halter white.

Abdomen dark brown, anterior 1/2 of tergite 1 yellow; setulae and setae on abdomen black. Male genitalia (Figs 9-12 ): epandrium brown, yellowish distally. Surstylus and cerci yellow. Surstylus with sparsely setose outer anterior face, inner face visible posteriorly, without tubercles. Cerci large, setulose, 2 long distal setae of different length. Pregonite thin, with many microchaetae, 2 strong setae nearly equal in length. Distiphallus bending and sac-like distally, consists of many sclerotized parts.

Dark phase

(China: Tibet): externally as described for pale phase except as follows: head much darker black; antennae dark yellow, first flagellomere dark brown. Scutum dark yellow, with brown shield shape slightly bigger and scutellum dark brown. Mediotergite much darker brown. Thoracic pleura yellowish. Anepisternum and katepisternum brown much darker. Mid and hind leg with femora and tibiae yellower.

Female. Unknown.

Distribution.

China (Yunnan, Tibet).

Etymology.

The specific name refers to the palpus wide, knife-shaped.

Remarks.

This new species is somewhat similar to Czernyola atrifrons (Malloch), but differs in having a yellow scutum with brown markings; in C. atrifrons the head is brown to dark brown, the vibrissa is small and the anterior half of tergite I is yellow ( Steyskal and Sasakawa 1966).

Figures

Figures 7 - 12. Czernyola planipalpis sp. nov. (male) 7 head, lateral view 8 wing 9 epandrium, cerci, and surstyli, posterior view 10 epandrium, cerci, and surstyli, lateral view 11 hypandrial complex, posterior view 12 hypandrial complex, lateral view. Scale bars: 0.1 mm.