Hylorops Enderlein

Fachin, Diego Aguilar, González, Christian R., Elgueta, Mario & Hauser, Martin, 2021, A catalog of Stratiomyidae (Diptera: Brachycera) from Chile, with a new synonym and notes on the species, Zootaxa 5004 (1), pp. 1-57 : 31

Genus Hylorops Enderlein

Hylorops Enderlein, 1921: 179 . Type species: Hylorops philippii Enderlein, 1921 , by original designation.

Refs.: Enderlein, 1921: 154 (classification, in Xylophaginae : Xylophagini); 174 (in key); Hardy, 1924: 365 (as syn. of Chiromyza , in Chiromyzini); Stuardo, 1946: 62 (cat., as Hylorops ); James, 1973a: 26.2 (cat.); Woodley, 1989: 302 (cat.); Oliveira & Pujol-Luz, 2000b: 1 (diag.); Pujol-Luz et al., 2001: 5 (com.); Woodley, 2001: 48 (cat.); Pujol-Luz & Pujol-Luz, 2014: 404 (list); Lessard et al. 2020: 15 (rev. of Australian species).

Comments. The genus is now monotypic and endemic to Chile. The two species known from Australia, Hylorops matruelis Enderlein, 1921 and H. australis ( Macquart, 1850) , were transferred to Chiromyza Wiedemann, 1820 (see Lessard et al. 2020: 13).

philippii Enderlein, 1921

Hylorops philippii Enderlein, 1921: 179 (in Xylophaginae : Xylophagini).

Holotype: female ( ZMHB). Type locality: Chile, Concepción. Distr.: Biobío Region: Concepción Province (Concepción); Araucanía Region: Malleco Province (Parque Nacional Tolhuaca); Los Lagos Region: Llanquihue Province (Puerto Montt).

Refs.: Lindner, 1943: 91 (list); Stuardo, 1946: 62 (cat.); James, 1973a: 26.2 (cat.); Oliveira & Pujol-Luz, 2000b: 2 (descr. of fem. term.), 3, fig. 1 (spermatheca); Woodley, 2001: 48 (cat.).

Comments. There are some specimens referred to Hylorops philippii Enderlein, 1921 in the literature (see Oliveira & Pujol-Luz 2000b), in which the genital fork resembles that of Chiromyza vittata ( Pujol-Luz & Oliveira 1999: 4) . It is interesting to note that Oliveira & Pujol-Luz’s female specimens of H. philippii , as many known females of Chiromyza and Nonacris Walker, 1850 , have nearly bare and dichoptic eyes, with only three to five flagellomeres in the antenna, and R 4+5 vein fused. Enderlein’s definitions of the genus and of his species, H. philippii , on the other hand, mentioned eight flagellomeres and M 3 reduced. If Enderlein’s number of flagellomeres is correct, this genus may be related to Mapuchemyia krausei Philippi, 1865 and Stenimantia carbonaria ( Philippi, 1865) (see below). These two also have four medial veins, while Chiromyza and Nonacris has only three medial veins. The shape of R 4+5, whether or not fused, of H. philippii is to be verified with the examination of the holotype. Males are still unknown.