Zygoneura (Zygoneura) occidens Zhang & Wu

Zhang, Su-Jiong, Wu, Hong & Huang, Junhao, 2010, The genus Zygoneura Meigen in China, with descriptions of three new species (Diptera, Sciaridae), Zootaxa 2368, pp. 40-48 : 45

publication ID

https://doi.org/ 10.5281/zenodo.193685

DOI

https://doi.org/10.5281/zenodo.6198226

persistent identifier

https://treatment.plazi.org/id/9A0387F2-FFA9-FFB4-13B9-EE8AF576F963

treatment provided by

Plazi

scientific name

Zygoneura (Zygoneura) occidens Zhang & Wu
status

sp. nov.

Zygoneura (Zygoneura) occidens Zhang & Wu View in CoL , sp. nov.

Specimens examined. Holotype, male. China, Sichuan province, Yaan, Labahe, 1200m, 29°59΄N, 102°59΄E 16.VII.2006, Xiao-Ling Niu [SM00946]. Paratype. 1 Male, China, Tibet province, Linzhi, Mafenggou, 29°50΄N, 93°25΄E, 3.VI.1978, Fa-Sheng Li [SM00947].

Description (Male). Body length 2.60 mm. Color: Head and thorax dark brown; palpus, antenna, coxae, abdomen and hypopygium yellowish-brown; legs yellow; wing fumose. Head ( Fig. 3 View FIGURE 3 A, B): Eye bridge broad, with three rows of facets. Prefrons with eight setae. Palpus three-segmented, basal segment with two setae, 2nd segment with four setae, 3rd segment with seven setae. Flagellomeres with long setae subequal in length. The 4th flagellomere 0.14 mm in length, length/width: 3.2, neck of flagellomere 0.06 mm and nearly 1/2 the length of the flagellomere. Thorax: Posterior pronotum and mediotergite bare. Scutellum with two setae. Apex of fore tibia with a broad comb-like row of setae ( Fig. 3 View FIGURE 3 C): Length of spur/width of tibia: fore leg 1.67, hind leg 1.02; length of metatarsus/length of tibia: fore leg 0.61, hind leg 0.43; length of hind tibia/length of thorax: 1.42. Tarsal claws three-toothed. Wings ( Fig. 3 View FIGURE 3 D): Wing length 1.78, width/length: 0.38. M1, M2, r-m and CuA1 with no setae. stM not clearly visible in the specimen. c/w: 0.75. R1/R: 0.65. Terminalia: Ventral mesial margin of gonocoxa with two groups of weak setae, the angulate lobe-like part not conspicuous ( Fig. 3 View FIGURE 3 E). Gonostylus oval, almost as long as the gonocoxa, bearing a pair of long megasetae and another longer megasetae near the apical third ( Fig. 3 View FIGURE 3 F). Tegmen somewhat higher than broad.

Female. Unknown.

Remarks. The species belongs to the subgenus Zygoneura ; it is similar to Z. sciarina in having three megasetae at the gonostylus, a bare posterior pronotum, and a scutellum with two setae (Menzle & Mohrig 2000). It can be recognized by the oval gonostylus and pair of long megasetae and another longer megasetae near the apical third. Moreover, the angulate lobe-like part in the new species is inconspicuous, unlike the other species of the subgenus.

Etymology. The species is named after its distribution (western China).

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Sciaridae

Genus

Zygoneura

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