Hologymnetis

Ratcliffe, Brett C., Gasca-Álvarez, Héctor Jaime & Deloya, Cuauhtémoc, 2017, Description of the Female ofHologymnetis reyesiGasca and Deloya (Coleoptera: Scarabaeidae: Cetoniinae: Gymnetini), with New State Records for Mexico and a Bilingual Key to the Species ofHologymnetisMartínez, The Coleopterists Bulletin 71 (1), pp. 143-151 : 146-149

KEY TO ADULTS OF THE SPECIES OF HOLOGYMNETIS

Males can be distinguished externally from females by their narrower protibia, sharply pointed metatibial spurs (rounded in females), and usually slightly concave abdomen (straight or weakly tumescent in females).

1. Venter nearly completely shiny black in both sexes, sternites laterally often with cretaceous markings..........................................2

1 ′. Venter brown to grayish brown, smokey grey, or pale brassy green or blue, weakly shiny or weakly to strongly metallic; females with at least central third of sternites bare, black or dark reddish brown.......................... 3

2. Dorsum unicolorous (smokey grey, greyish

olive, cinnamon, brown, or black). Parameres

as in Fig. 10 . Sonora, Mexico to Guatemala

(possibly Honduras) ( Fig. 16 )......... H. cinerea

(Gory and Percheron)

2 ′. Dorsum black or piceous and distinctly patterned with cretaceous bands; bands present longitudinally on pronotum and radiating from midline on elytra, bands occasionally reduced or nearly absent. Parameres as in Fig. 14 . Southern Brazil, Paraguay, eastern Bolivia ( Fig. 18 )........................ H. undulata (Vigors)

3. Venter brassy green (usually with coppery reflection) or dull grayish olive or bluish gray (rarely blue) with or without coppery reflections.....................................................4

3 ′. Venter opaque smokey grey, grayish brown, yellowish brown, or tan in males, females similar but brown or grey color greatly reduced.........................................................5

4. Venter bright, shiny, brassy green, usually with distinct reflection. Protibia with teeth subequally spaced. Parameres as in Fig. 8 . Arizona, USA to Durango, Mexico ( Fig. 16 )................ ...................................... H. argenteola (Bates)

4 ′. Venter dull grayish olive or bluish gray (rarely blue) with or without coppery reflections. Protibia with median tooth distinctly closer to apical tooth than to basal tooth. Parameres as in Fig. 13 . West-central Mexico (Pacific slope to the Sierra Madre Occidental) ( Fig. 17 )...... H. moroni Ratcliffe and Deloya

5. Mesometasternal process with shiny black

apex (mesosternum) usually sharply and trans-

versely delineated from smokey grey shaft

(metasternum). Parameres with apicomedian

ridges tapering to a point ( Fig. 15 ). El Salvador

( Fig. 17 )................................... H. vulcanorum

Ratcliffe and Deloya

5 ′. Mesometasternal process completely dark reddish brown or piceous or with shiny apex (mesosternum) and shaft (metasternum) usually broadly joined by a broad, longitudinal, piceous region. Parameres apically not acuminate.............................................6

6. Mesosternal process broadly subquadrate in

ventral view, apex broadly rounded. Para-

meres subquadrate in caudal view ( Fig. 11 ).

Chiapas, Mexico to southwestern Guatemala

( Fig. 16 ) ................................. H. kinichahau

Ratcliffe and Deloya

6 ′. Mesosternal process narrow in ventral view, apex narrowly rounded. Parameres in caudal view expanded at apex ( Figs. 9, 12 ).................7

7. Metasternum with long, dense, tawny setae ( Figs. 2 , 7 ). Pronotum lacking pale, longitudinal, median line. Parameres in caudal view with laterally projecting tooth at apex ( Fig. 9 ). Central Mexico (Colima, Guerrero, and Estado de México) ( Fig. 16 ) .................... .......................... H. reyesi Gasca and Deloya

7 ′. Metasternum glabrous or with only minute, sparse, tawny setae. Pronotum with pale, longitudinal, median line. Parameres in caudal view with apex rounded ( Fig. 12 ).

Figures

Figs. 8–15. Hologymnetis species, parameres (caudal and lateral views). 8) H. argenteola; 9) H. reyesi; 10) H. cinerea; 11) H. kinichahau; 12) H. margaritis; 13) H. moroni; 14) H. undulata; 15) H. vulcanorum.

Fig. 16. Distribution map for Hologymnetis argenteola, Hologymnetis reyesi, Hologymnetis cinerea, and Hologymnetis kinichahau.

Fig. 18. Distribution map for Hologymnetis undulata.

Fig. 17. Distribution map for Hologymnetis margaritis, Hologymnetis moroni, and Hologymnetis vulcanorum.

Figs. 1–5. Hologymnetis reyesi, male. 1) Dorsal habitus; 2) Ventral habitus; Parameres: 3) Dorsal view; 4) Ventral view; 5) Lateral view. Photographs by Jiri Zidek.

Figs. 6–7. Hologymnetis reyesi, female. 6) Dorsal habitus; 7) Ventral habitus. Photographs by Jiri Zidek.