Eugenys Quate, 1996

Jaume-Schinkel, Santiago & Kvifte, Gunnar Mikalsen, 2024, Revision of the genus Eugenys Quate, 1996 (Diptera: Psychodidae), with the description of three new species, European Journal of Taxonomy 935, pp. 81-100 : 97

Key to the males of Eugenys Quate, 1996

1. Hypopods with a lateral digitiform and curved projection (see Fig. 6C, E .) .... E. singularis sp. nov.

– Hypopods without a lateral digitiform projection (as in Fig. 3A–E ) ................................................ 2

2. Hypopods with 14–16 apical tenacula ( Figs 2B , 3E ) .................................... E. cymosa Quate, 1999

– Hypopods with a single apical tenaculum ( Fig. 3B, D–E ) ............................................................... 3

3. Antennal flagellomeres without a patch of darkened sensilla ( Fig. 4A ) ........................................... 5

– Antennal flagellomeres with a patch of darkened sensilla ( Fig. 8A ) ................................................ 4

4. Aedeagus curved, without distinguishable paramere apart from the parameral sclerite ( Figs 3D , 7E– F, H ) ...................................................................................................................... E. upsilon sp. nov.

– Aedeagus straight, with distinguishable paramere in addition to the parameral sclerite( Figs 3B , 5B ) ......................................................................................................... E. panamensis Quate, 1999

5. Aedeagus short, less than half the length of the ejaculatory apodeme; parameral sclerite not Y-shaped, appears absent ( Figs 3E , 4E, G , 5A ) ........................................................................ E. micra sp. nov.

– Aedeagus long, more than half the length of the ejaculatory apodeme; parameral sclerite Y-shaped and sclerotized ( Figs 2A , 3C ) .................................................................... E. clavellata Quate, 1996

Figures

Fig. 6. Eugenys singularis sp. nov., ♂, holotype (INBIO-CRI001470242). A. Head. B. Aedeagus, gonocoxites and gonostyli (ventral view). C. Hypopods (ventral view). D. Aedeagus, gonocoxites and gonostyli (ventral view). E. Hypopods. Scales in millimeters (mm). Abbreviations: see Material and methods.

Fig. 3. Male genitalia, ventral view. A. Eugenys cymosa Quate, 1999, paratype (BMNH(E)2001-8). B. Eugenys panamensis Quate, 1999, paratype (BMNH(E)-2001-8). C. Eugenys clavellata Quate, 1996, paratype (USNMENT00857092). D. Eugenys upsilon sp. nov., holotype (ZFMK-DIP-00097918). E. Eugenys micra sp. nov., holotype (ZFMK-DIP-00097917). F. Eugenis singularis sp. nov., holotype (INBIO-CRI001470242). Red arrows point to the parameral sclerites. Photos: A–B, D–F by Santiago Jaume-Schinkel, C by David Pecor, Smithsonian Institute Museum. Scales in millimeters (mm).

Fig. 2. A. Eugenys clavellata Quate, 1996, ♂, paratype (USNMENT00857092), genitalia (ventral view). B. Eugenys cymosa Quate, 1999, ♂, paratype (BMNH(E)2001-8), genitalia (ventral view). Photos A by David Pecor, Smithsonian Institute Museum, B by Santiago Jaume-Schinkel. Scales in millimeters (mm). Abbreviations: see Material and methods.

Fig. 4. Eugenys micra sp. nov., ♂, holotype (ZFMK-DIP-00097917). A. Head. B. Wing. C. Mouth parts. D. Scape, pedicel and first two flagellomeres. E. Aedeagus (ventral view). F. Epandrium and hypopods (ventral view). G. Aedeagus, gonocoxites, and gonostyli (ventral view). Scales in millimeters (mm). Abbreviations: see Material and methods.

Fig. 8. Eugenys upsilon sp. nov., ♀, paratype (ZFMK-DIP-00097916). A. Head. B. Wing. C. Mouth parts. D. Genitalia (ventral view). Scales in millimeters (mm).

Fig. 7. Eugenys upsilon sp. nov. A. ♂, paratype (ZFMK-DIP-00097921), head. B. ♂, paratype (ZFMK- DIP-00097914), wing. C. ♂, paratype (ZFMK-DIP-00097921), mouth parts. D. ♂, paratype (ZFMK- DIP-00097921), first antennal segments. E–H. ♂, holotype (ZFMK-DIP-00097918). E. Aedeagus (lateral view). F. Aedeagus (ventral view). G. Epandrium and hypopods (ventral view). H. Aedeagus, gonocoxites, and gonostyli (ventral view). Scales in millimeters (mm). Abbreviations: see Material and methods.

Fig. 5. Male genitalia, ventral view. A. Eugenys micra sp. nov., holotype (ZFMK-DIP-00097917). B. Eugenys panamensis Quate, 1999, paratype (BMNH(E)-2001-8). Scales in millimeters (mm). Abbreviations: see Material and methods.