Cheiromyia

Brooks, Scott E., Cumming, Jeffrey M., Limeira-De-Oliveira, Francisco & Pollet, Marc, 2018, New species and records of Cheiromyia Dyte from Brazil and French Guiana (Diptera: Dolichopodidae), Zootaxa 4444 (3), pp. 267-282: 269-270

publication ID

https://doi.org/10.11646/zootaxa.4444.3.3

publication LSID

lsid:zoobank.org:pub:E0D89767-E03C-4350-8DF4-1624D73E3501

persistent identifier

http://treatment.plazi.org/id/641687CC-FFB6-CF54-D2AD-EFDAFA485121

treatment provided by

Plazi

scientific name

Cheiromyia
status

 

Key to species of Cheiromyia  (males)

1 Postpedicel with one elongate projection on outer surface ( Brooks et al. 2010, fig. 1A); antenna entirely dark brown; face dark brown and narrow; femora infuscate ( Brazil: Amazonas)........................................ C. bicornis Brooks   

- Postpedicel with several projections on outer surface ( Figs 1–4, 6, 8View FIGURES 1–3View FIGURES 4–9); antenna with scape and pedicel pale, postpedicel entirely dark brown, or pale basally; face silvery white or opaque yellow, width various ( Figs 1–3 View Figure ; Brooks et al. 2010, figs 2A–C); at least fore and hind femora mostly pale (fore femur of C. nordestina  Limeira-de-Oliveira & Cumming sp. nov. infuscate anteroventrally at mid length)............................................................................ 2

2 Postpedicel elongate subtriangular, gradually tapering to apex ( Figs 4–7 View Figure ), outer surface with 5–11 projections............ 3

- Postpedicel subovoid basally with abruptly narrowed digitiform apex, outer surface with 3–5 projections ( Fig. 8 View Figure ; Brooks et al. 2010, fig. 1B)........................................................................................ 5

3 Postpedicel with short, stubby projections ( Fig. 6 View Figure ); fore femur with anterior surface pale yellow, lacking denser setulae anteroventrally ( Fig. 12 View Figure ); cercus mainly pale on ventral (inner) surface with only posterior and lateral margin infuscate ( Fig. 20 View Figure ) ( Brazil: Ceará, Maranhão, Piauí and São Paulo).............. C. nordestina  Limeira-de-Oliveira & Cumming sp. nov. 

- Postpedicel with long projections ( Fig. 4 View Figure ; Brooks et al. 2010, fig. 1D); fore femur with anterior surface bright yellow-orange, with denser setulae anteroventrally ( Figs 11, 13, 14 View Figure ); cercus more extensively infuscate on ventral (inner) surface ( Figs 15 View Figure , 2 3 View Figure ).................................................................................................... 4

4 Fore femur with infuscate area anteroventrally at mid length, with associated crest of dense elongated setulae below infuscate area ( Fig. 11 View Figure ); mid femur brown on anterior and posterior surfaces; postpedicel with 6–7 projections ( Fig. 4 View Figure ); face relatively narrow ( Fig. 2 View Figure ); apicoventral epandrial lobe short and subtriangular ( Fig. 17 View Figure ); hypandrium asymmetrical ( Fig. 16 View Figure ); smaller species, wing length about 4.2 mm ( Brazil: Maranhão)................... C. carolina  Limeira-de-Oliveira & Brooks sp. nov. 

- Fore femur without infuscate area anteroventrally, with denser setulae running along most of anteroventral edge ( Figs 13, 14 View Figure ); mid femur pale; postpedicel with 9–11 projections ( Brooks et al. 2010, fig. 1D); face broad ( Brooks et al. 2010, fig. 2A); apicoventral epandrial lobe elongate and curved ( Fig. 24 View Figure ); hypandrium more or less symmetrical; larger species, wing length 4.8– 5.1 mm ( Brooks et al. 2010, fig. 7) ( Bolivia, Brazil, French Guiana).......................... C. pennaticornis (Parent) 

5 Fore leg with tarsomere 2 slightly longer than tarsomere 3; cercus large and triangular with series of long, strong setae along posterior margin ( Brooks et al. 2010, fig. 6A); face narrow ( Brooks et al. 2010, fig. 2C) ( Ecuador, Brazil, Surinam, French Guiana)......................................................................... C. palmaticornis (Parent)  - Fore leg with tarsomere 2 shorter than tarsomere 3 ( Brooks et al. 2010, fig. 4A); cercus ovoid or subquadrate, with relatively short marginal setae ( Fig. 19 View Figure ); face wider (as in Fig. 1 View Figure )....................................................... 6

6 Wing infuscate ( Fig. 10 View Figure ); postpedicel dark brown ( Fig. 8 View Figure ); fore tibia not swollen; hypandrium with preapical hook-like process on each side ( Fig. 18 View Figure ) (French Guiana)...................................... C. fuscipennis Pollet & Brooks  sp. nov.

- Wing hyaline ( Brooks et al. 2010, fig. 2D); postpedicel pale basally (especially on medial surface, Fig. 1 View Figure ); fore tibia slightly swollen ( Brooks et al. 2010, fig. 4A); hypandrium without preapical hook-like process on each side ( Brooks et al. 2010, figs 4C, 5C)............................................................................................. 7

7 Left apicoventral epandrial lobe lacking acute apicodorsal projection ( Brooks et al. 2010, fig. 4B); face relatively narrow ( Fig. 1 View Figure ) ( Colombia, Guyana, French Guiana, Brazil).............................................. C. brevitarsis Brooks 

- Left apicoventral epandrial lobe with acute apicodorsal projection ( Brooks et al. 2010, fig. 5A); face wider ( Costa Rica)............................................................................................ C. laselva Brooks