Cheiromyia Dyte, 1980

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

Genus Cheiromyia Dyte

Cheirocerus Parent, 1930: 13 . Type species: Cheirocerus palmaticornis Parent [Neotropical], by monotypy. Preoccupied by Cheirocerus Eigenmann, 1917 [Pisces].

Cheiromyia Dyte, 1980: 223 . Type species: Cheirocerus palmaticornis Parent , automatic. Replacement name for Cheirocerus Parent, 1930 .

Recognition. Males of the genus are readily distinguished by their striking antler-like antennae ( Figs 1–8 ), each bearing one or many projections on the outer surface of the enlarged postpedicel ( Figs 1 , 4, 6 ), and by their distinctive hypopygia with ventrally projecting right and left apicoventral epandrial lobes, each bearing a pair of long fine setae ( Figs 17, 19 , 22, 24 ). Females are problematic to recognize when not collected with males, and cannot readily be diagnosed from females of Paraclius Loew. Morphological features shared among all species are given in the full generic redescription provided by Brooks et al. (2010) and are not included in the species descriptions below.

Distribution. Based on the material examined in the revision by Brooks et al. (2010) and new records reported herein, the genus is known to occur from the following countries: Costa Rica, Colombia, Ecuador, Brazil (Acre, Amapá, Amazonas, Ceará, Pará, Piauí, Pernambuco, Maranhão, Minas Gerais, Roraima, São Paulo, Sergipe, Tocantins), Bolivia (La Paz), Guyana, Surinam and French Guiana. Currently the genus has not been recorded from southern South America or from the Pacific side of the Andes Mountains.

Figures

FIGURES 1–3. Heads of male Cheiromyia in anterior view. 1. Cheiromyia brevitarsis Brooks. 2. Cheiromyia carolina Limeira-de-Oliveira & Brooks sp. nov. 3. Cheiromyia nordestina Limeira-de-Oliveira & Cumming sp. nov.

FIGURES 4–9. Antennae of Cheiromyia. 4. Cheiromyia carolina Limeira-de-Oliveira & Brooks sp. nov., male, left antenna, outer surface. 5. Same, inner surface. 6. Cheiromyia nordestina Limeira-de-Oliveira & Cumming sp. nov., male, left antenna, outer surface. 7. Same, inner surface. 8. Cheiromyia fuscipennis Pollet & Brooks sp. nov., male holotype, right antenna, inner surface. 9. Cheiromyia pennaticornis (Parent), female, right antenna, inner surface. Abbreviations: ar styl–arista-like stylus; pped–postpedicel.

FIGURES 15–19. Hypopygia of Cheiromyia. 15. Cheiromyia carolina Limeira-de-Oliveira & Brooks sp. nov., left cercus, ventral view (inner surface). 16. Same, hypandrium and phallus, ventral view. 17. Same, hypopygium, left lateral view. 18. Cheiromyia fuscipennis Pollet & Brooks sp. nov., hypandrium and phallus, ventral view. 19. Same, hypopygium, left lateral view. Abbreviations: apv lb–apicoventral epandrial lobe; bv lb–basiventral epandrial lobe; bv s–basiventral epandrial seta; cerc–cercus; hypd–hypandrium; ph–phallus; v sur–ventral lobe of surstylus.

FIGURES 20–24. Hypopygia of Cheiromyia. 20. Cheiromyia nordestina Limeira-de-Oliveira & Cumming sp. nov., left cercus, ventral view (inner surface). 21. Same, hypandrium and phallus, ventral view. 22. Same, hypopygium (internal detail shown), left lateral view. 23. Cheiromyia pennaticornis (Parent), left cercus, ventral view (inner surface). 24. Same, hypopygium, left lateral view. Abbreviations: apv lb–apicoventral epandrial lobe; bv lb–basiventral epandrial lobe; hypd– hypandrium; ph–phallus; v sur–ventral lobe of surstylus.