Chasmacryptum Becker, 1907

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 : 80

publication ID

https://doi.org/ 10.11646/zootaxa.4656.1.3

publication LSID

lsid:zoobank.org:pub:DAB5A006-2872-43FB-AE95-9B3D9C0B65D0

persistent identifier

https://treatment.plazi.org/id/03C16F31-C202-FFDB-FF4E-FD20FB3B2C05

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scientific name

Chasmacryptum Becker, 1907
status

 

6. Chasmacryptum Becker, 1907 View in CoL

( Figs. 15 View FIGURES 9–16 , 29 View FIGURES 25–32 , 41–42 View FIGURES 41–48 , 65 View FIGURE 65 )

Chasmacryptum Becker, 1907: 261 View in CoL . Type species: Chasmacryptum seriatimpunctatum Becker, 1907 View in CoL (monotypy). Pseudopherbina Elberg, 1965: 192 . Type species: Pseudopherbina loewi Elberg, 1965 (monotypy).

Diagnosis. Relatively small species, about 5 mm. Body mainly yellow. Body color and external characters similar to most species of genus Tetanocera , but wing with black spots and male sternites 4 and 5 densely covered with short setae. Frontal vitta reaching foremargin of frons. One pair of ocellar setae and 2 pairs of scutellar setae present. Prosternum setulose.

Remarks. As one of 21 monotypic genera in the family Sciomyzidae , Chasmacryptum comprises only 1 described species, Chasmacryptum seriatimpunctatum Becker, 1907 ; he described both sexes from Bomyn (Bomi County), Tibet, China. The species is restricted to the Palearctic Region.

During our study we found 6 specimens of C. seriatimpunctatum : 1 male from Heilongjiang, 3 males and 1 female from Qinghai, and 1 female from Inner Mongolia, all collection sites being in the Palearctic Region of China, which is consistent with the known distribution of the genus in the Eastern Hemisphere.

Becker, T. (1907) Zur Kenntnis der Dipteren von Central-Asien. I. Cyclorrhapha schizophora holometopa und Orthorrhapha Brachycera. Annuaire du Musee Zoologique de l'Academie Imperiale des Sciences de St. - Petersbourg, 12 (3), 253 - 317.

Elberg, K. J. (1965) New palaearctic genera and species of flies of the family Sciomyzidae (Diptera, Acalyptrata). Entomologichekoe Obozrenie, 44 (1), 189 - 196.

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FIGURE 65. Geographical distribution of genera of Sciomyzidae from China (1).

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FIGURES 9–16. Characters and morphological terms for the family Sciomyzidae (II).

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

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FIGURES 41–48. Adult habitus of genera in the tribe Tetanocerini (I).

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Sciomyzidae

SubFamily

Sciomyzinae

Tribe

Tetanocerini