Cyclocephala hardyi Endrödi

Joly, Luis J., 2000, A New Species Of Cyclocephala From Venezuela Related To Cyclocephala castanea (Olivier) and C. hardyi Endrödi (Coleoptera: Scarabaeidae: Dynastinae), The Coleopterists Bulletin 54 (4), pp. 520-531 : 526-529

Cyclocephala hardyi Endrödi

( Figs. 1b , 4b–14b)

Cyclocephala hardyi Endrödi, 1975 , Folia Entomol. Hungarica, n. s., XXVIII (2): 281 (descr. male, female, compared with C. castanea ), figs. 4–6 (genitalia), Holotype male INPA, Type locality: Brazil, Amazonas, Ilha de Careiro. Prance & Arias, 1975, Acta Amazonica 5(2): 128 (compared with C. verticalis ), figs. 20 (photo on flowers of Victoria amazonica ), 21C–D (genitalia) ( Brazil). Endrödi, 1985, Dynastinae of the World, pp. 45 (key, male), 126 (key, female), figs. 363–364 (genitalia) ( Brazil). Lachaume, 1992, Les Coleopteres du Monde 14: 12 (compared with C. castanea ).

Description. Male. Clypeus ( Fig. 1b ) 1.9 times as wide at base as long, slightly more widely margined on apical than lateral borders; lateral borders almost straight, strongly converging to apex, apex truncate; anterior angles moderately widely rounded; anterior border more upturned than lateral ones. Head with minute, sparse punctures, denser near apex of clypeus, a little less fine and a little more dispersed on frons, denser on vertex. Fronto­clypeal suture thin, projecting angularly backward at middle. Frons 2.0 times as wide as transverse eye diameter.

Labium (Fig. 4b) moderately wide, narrower on distal half; anterior border strongly bilobulate; with fine, dense, long setae close to apical border, rest of disk glabrous and margined with long bristles, longer towards base. Labial palpi with last segment subcylindrical, narrow.

Pronotum approximately 1.2 times as wide as long, sides arched, uniformly converging towards apex; basal border finely and uniformly margined.

Elytra 1.1 times as long as their maximum combined width, almost parallel sided in basal half. Surface somewhat flattened and roof­shaped, finely punctate, punctures distinctly annulated (503); apex with fine microsculpture, somewhat mat.

Pygidium 1.6 times as wide as long, in lateral view (Fig. 11b) softly convex, more strongly convex at base and at apex. Surface with very fine microsculpture, mat.

Anterior tibia ( Fig. 5b ) with apical and intermediate teeth closely set, more or less of same length, basal shorter and wider, separated from middle by a distance 2.0 times greater than that separating middle and anterior teeth; a median longitudinal row of fine and long setae, mixed with shorter ones, separated by a distance shorter than basal diameter of setae, and a row of short setae close to internal border, setae separated by distance larger than basal diameter of setae itself. Segment 5 of anterior tarsi (Fig. 7b) very thick, hardly longer than 1–4 combined, without ventro­lateral carina on internal side; largest claw (Fig. 8b) wide and short, widest at basal third, concavely narrowed internally towards apex, finely cleft at apex, main branch rounded at apex. First segment of mid and posterior tarsi subtriangular, elongate, widened to apex ( Fig. 9b ).

Prosternal process high, apex divided, convex and glabrous on anterior part; posterior margin convex, strongly punctured and completely covered with long and strong bristles.

Hypomeron of prothorax smooth, glabrous.

Aedeagus: As in Figures 13b and 14b.

Female. Differs from male in the following characters: clypeus wider, 2.1 times as wide as long, lateral borders a little more curved, apical border wider. Sides of elytra convex, its maximum width at middle, with a short widening at beginning of apical fifth, and also with moderate lateral swelling. Epipleura not sharply interrupted (Fig. 10b). Anterior tibiae (Fig. 6b) less robust, with teeth longer, basal separated from middle by a distance 2.8 times greater than that separating middle from anterior teeth. Anterior tarsi not thickened. First segment of posterior tarsus subtriangular, short. Pygidium much shorter, almost 3.0 times as wide as long; in posterior view with apical borders straight, margined, apex widely rounded and not margined; flat in lateral view (Fig. 12b). Last ventrite very big, 1.3 times longer than pygidium, about 2.0 times as wide as long, in lateral view strongly convex (Fig. 12b).

Size. 20–26 mm.

Distribution. Brazil (Amazonas) ( Fig. 15 ).

Biology. Cyclocephala hardyi has been collected on flowers of Victoria amazonica , which they feed on and cross­pollinate ( Prance & Arias 1975).

Specimens Studied. BRAZIL: Amazonas, Sta Terezinha, Careiro, July 29,

1975, on Victoria amazonica , 1 male, 1 female (AMNH); Ilhas de Careiro , J. Arias, on flowers of Victoria regia , 1 female (Paratype) (AMNH); id. VIII­27­ 1974, J. Arias col., flowers of Victoria amazonica , 1 male, 1 female (Paratypes) (NMNH); Manaus, 16­IX­1975, flowers of V. regia , 1 female .

Notes. Prance (1974) mentions that ‘‘the correct name for the Amazonian species of Victoria is V. amazonica , and not the more frequently used name, V. regia . ’’

Figures

Figs. 1a–4a. Cyclocephala pygidialis Joly, n. sp. 1a) Head, frontal view; 2a) head, lateral view; 3a) maxila, ventral view; 4a) labium, ventral view. Figs. 1b, 4b. C. hardyi Endrödi. 1b) Head, frontal view; 4b) labium, ventral view. Figs. 1c, 3c–4c. C. castanea (Olivier). 1c) Head, frontal view; 3c) maxila, ventral view; 4c) labium, ventral view.

Figs. 5a–8a. Cyclocephala pygidialis Joly, n. sp. 5a) Anterior femur of male; 6a) anterior femur of female; 7a) fifth anterior tarsal segment of male; 8a) larger claw of anterior tarsus of male, frontal view. Figs. 5b–8b. C. hardyi Endrödi 5b) Anterior femur of male; 6b) anterior femur of female; 7b) fifth anterior tarsal segment of male; 8b) larger claw of anterior tarsus of male, frontal view. Figs. 5c–8c. C. castanea (Olivier). 5c) Anterior femur of male; 6c) anterior femur of female; 7c) fifth anterior tarsal segment of male; 8c) larger claw of anterior tarsus of male, frontal view.

Figs. 9a–12a. Cyclocephala pygidialis Joly, n. sp. 9a) First posterior tarsal segment of male; 10a) ventral view of female epipleural widening; 11a) lateral view of pygidium and last ventrite of male; 12a) lateral view of pygidium and last ventrite of female. Figs. 9b–12b. C. hardyi Endrödi. 9b) First posterior tarsal segment of male; 10b) ventral view of female epipleural widening; 11b) lateral view of pygidium and last ventrite of male; 12b) lateral view of pygidium and last ventrite of female. Figs. 9c–12c. C. castanea (Olivier). 9c) first posterior tarsal segment of male; 10c) ventral view of female epipleural expansion; 11c) lateral view of pygidium and last ventrite of male; 12c) lateral view of pygidium and last ventrite of female.

Figs. 13a–14a. Cyclocephala pygidialis Joly, n. sp. 13a) Parameres; 14a) aedeagus, lateral view. Figs. 13b–14b. C. hardyi Endrödi. 13b) Parameres; 14b) aedeagus, lateral view. Figs. 13c–14c. C. castanea (Olivier). 13c) Parameres; 14c) aedeagus, lateral view.

Fig. 15. Distribution of Cyclocephala pygidialis Joly, sp. n. (triangle); C. hardyi Endrödi, 1975 (square), and C. castanea (Olivier) (circles).