Cleigastra Macquart, 1835

Iwasa, Mitsuhiro, 2021, Three new species and six new records of Scathophagidae (Diptera) from Japan with a key to the Japanese genera, Zootaxa 4981 (3), pp. 531-553 : 535

Genus Cleigastra Macquart, 1835

[Japanese name: Hizaguro-funbae-zoku]

Cleigastra Macquart, 1835: 384 . Type-species: Cordylura apicalis Meigen, 1826: 236 , by designation of Westwood, 1840.

Cnemopogon Rondani, 1856: 100 . Type-species: Cordylura apicalis Meigen, 1826: 236 , by original designation.

Nanna Strobl, 1894: 77 [as subgenus of Cordilura Fallén, 1810 ]. Type-species: Cordylura flavipes Fallén, 1819 , by designation of Vockeroth, 1965.

Amaurosoma Becker, 1894: 109 . Type-species: Cordylura flavipes Fallén, 1819 , by original designation.

Spathephilus Becker, 1894: 121 . Type-species: Cordylura breviventris Loew, 1873 , by original designation.

Pselaphephila Becker, 1894: 122 . Type-species: Pselaphephila loewi Becker, 1894 , by monotypy.

Monochaeta Becker, 1894: 87 , 186. Type-species: Cordylura breviventris Loew, 1873 , by original designation.

Orthacheta Becker, 1894: 101 . Type-species: Cordylura pilosa Zetterstedt, 1838 , by original designation.

Gonatherus Rondani, 1856: 99 . Type-species: Cordilura planiceps Fallén, 1826 , by original designation.

Ozerov & Krivosheina (2015) reviewed the genus Cleigastra Macquart and six related genera ( Gonarcticus Becker , Gonatherus Rondani , Nana Strobl , Orthacheta Becker , and Spathephilus Becker ) in Russia. Thereafter, Ozerov and Krivosheina (2016) proposed that Cleigastra comprises three subgenera Cleigastra sensu strico, Gonatherus , and Orthacheta . On the basis of these previous studies and the Japanese specimens, the characteristics of Cleigastra are defined as follows.

Diagnosis. Frons black; face, parafacial and gena pale yellow or silvery microtrichose; 3-4 fr, 3 or, 1 oc, 1 poc,1 vti, 1 vte; postpedicel long approximately 4-4.5 times as long as wide, with acute upper corner; 1 vibrissa and 2 subvibrissae; thorax black, greyish dusted; 2 pprn, 2 npl, 1+2 ial, 2 sa, 2 pa, (2-3)+3 dc, 1 prepst, 1 prepm, 3 kpst, 1 dsc, 1 apsc; wings infuscate; vein A 1 +CuA 2 complete; legs black, brown to yellow; fore femur with rows of dorsal, posterodorsal, and sometimes with anteroventral strong setae; abdominal tergites black, greyish dusted, covered with hairs and setulae, and each segment often lateral and posterior strong setae; male sternite V distinctly bilobate posteriorly; male surstyli comparatively simple; male cerci fused to each other; female ovipositor long and normally cylindrical.