Tetanocera Duméril, 1800

Li, Zhu, Yang, Ding & Murphy, William L., 2019, Review of genera of Sciomyzidae (Diptera: Acalyptratae) from China, with new records, synonyms, and notes on distribution, Zootaxa 4656 (1), pp. 71-98 : 90-92

18. Tetanocera Duméril, 1800

( Figs. 32 , 62 , 68 )

Tetanocera Duméril, 1800: 439 . Type species: Musca elata Fabricius, 1781 (I.C.Z.N. validation of the generic name). Chaetomacera Cresson, 1920: 54 . Type species: Musca elata Fabricius, 1781 (original designation).

Diagnosis. Usually larger species. Body always yellowish brown. Frontal vitta stripe-like and shining, sometimes frons entirely shining. Arista mostly with long plumose hairs. Anepisternum and anepimeron bare. Subalar setae absent. Wing hyaline without spots, at most with darkened costal margin and crossveins.

Remarks. Comprising 39 described species, Tetanocera is the fourth largest genus of Sciomyzidae . According to Rozkošný (1987) and Vala et al. (2012), 20 species are known from the Palearctic Region, 30 species are known from the Nearctic Region (with 1 species, T. plumosa , extended into the Neotropical Region), and 2 species are known from the Oriental Region.

Before our study, 6 species of Tetanocera ( T. arrogans , T. chosenica , P. elata , T. ferruginea , T. ignota , and T. nigrostriata ) had been recorded from China ( Knutson 1977; Rozkošný & Elberg 1984; Rozkošný 1987; Li, Yang & Gu 2001). The type locality of 2 species are in China: P. ignota , whose type locality is Tibet, and T. nigrostriata , whose type locality is Kunming (Yunnan Province). During our study we determined about 7 species new to China, bringing to at least 13 the number of species known from China. Although Tetanocera is found in both the Palearctic and Oriental Regions of China, most specimens of Tetanocera in our study were from the Palearctic Region of China.

According to the key of Rozkošný (1987), only T. latifibula Frey, 1924 and T. punctifrons Rondani, 1868 , are both characterized by having 1 preapical seta on the posterior surface of the midfemur. In our study, 49 specimens (15 males and 34 females) were found to have this character, which means that each of the specimens is most likely to be either T. latifibula or T. punctifrons . The 49 specimens were collected both from the Palearctic Region of China, including such areas as Inner Mongolia, Liaoning Province, Hebei Province, and Beijing and from the Oriental Region of China, and including such areas as Sichuan Province, Henan Province (Nanyang, Xinyang), Yunnan Province, Guizhou Province, and Zhejiang Province. Both T. latifibula and T. punctifrons have been reported only from the Palearctic Region before, so our records from the Oriental Region of China indicate that Tetanocera has a more extensive distribution than had been known.

Figures

FIGURE 68. Geographical distribution of genera of Sciomyzidae from China (4).

FIGURES 25–32. Characters and morphological terms of the family Sciomyzidae (IV).

FIGURES 57–64. Adult habitus of genera in the tribe Tetanocerini (II).