Cyclocephala castanea (Olivier)

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 : 529-530

Cyclocephala castanea (Olivier)

( Figs. 1c , 3c–14c)

Melolontha castanea Olivier, 1789 , Ent. I, 5, p. 79, t. 10, f. 124 ( Surinam). Fabricius, 1801, Syst. Eleuthe., II, p. 167. (America Meridionali).

Cyclocephala castanea, Burmeister, 1847 , Handb. Ent., V, p. 49 (descr., synon.) ( Guyana). Prudhomme 1906, Cat. Col. Guyane fr., p. 12 (French Guiana). Ohaus, 1911, Deutsche Entomol. Zeit. 7: 560 (compared with C. suturalis ). Casey, 1915, Mem. Col., VI: 113 (clave) (gen. Aclinidia ). Bodkin, 1919, Entomol. Month. Mag. 55: 210 ( Guyana). Endrödi, 1966, Entom. Abh. Mus. Tierkunde, Dresden 33: 66 (key, male; subg. Aclinidia, Casey ), 128 (key, female), 166 (descr. male, female; Neotype male, from Surinam, Col. Endrödi), figs. 405–406 (genitalia) ( Guyana, Surinam, French Guiana, Brazil). Endrödi, 1969, Acta Zool. Acad. Sci. Hungar. XV(1–2): 38 (color forms) ( Guyana). Endrödi, 1975, Folia Entomol. Hungarica, n. s., XXVIII(2): 281 (compared with C. hardyi ), figs. 1–3 (genitalia). Prance & Arias, 1975, Acta Amazonica 5(2): 126, 128, figs. 18 (photo, mating pair), 21A–B (genitalia) ( Brazil, Manaos). Endrödi, 1985, Dynastinae of the World, pp. 32, 45 (key, male), 126 (key, female), figs. 361–362 (genitalia), pl. 1, Fig. 1 (photo, male), ( Guyana, Surinam, French Guiana, Brazil). Lachaume, 1992, Les Coléoptères du Monde 14: 12, Pl. 1, Fig. 6 ( Guyana, Surinam, French Guyana, Brasil).

Melolontha elongata Olivier, 1789 , Ent. I, 5, p. 23, t. 4, Fig. 31 ( Surinam).

Melolontha valida Schönherr, 1817 , Syn. Ins. I, 3, p. 187.

Cyclocephala latipes Castelnau, 1840 , Hist. Nat. II, p. 124 (Cayenne).

Description. Male. Clypeus ( Fig. 1c ) 1.7 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 slightly convex; anterior angles moderately widely rounded; anterior border more upturned than lateral ones. Head with minute and sparse punctures, denser near apex of clypeus, a little less fine and a little more dispersed on frons, denser on vertex. Fronto­clypeal suture thin, projected angularly backward at middle. Frons 2.2 times as wide as transverse eye diameter.

Labium (Fig. 4c) moderately wide, elongated, narrower on distal half, lateral borders almost uniformly rounded; anterior border transversely truncate, with small notch on middle, covered with fine, long setae on apical half, and margined with long bristles, longer towards base. Labial palpi with last segment narrow, subcylindrical,

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

Elytra 1.2 times as long as their maximum combined width, weakly narrowed from humerus to beginning of apical third, from where it is slightly convex and more strongly and almost uniformly narrowed to apex; sutural angle not defined, continuous with apical curvature. Surface somewhat flattened and roof­shaped, finely punctate.

Pygidium large, 1.5 times as wide as long, in lateral view (Fig. 11c) softly convex, more strongly convex at base and apex.

Anterior tibia ( Fig. 5c ) with external teeth increasing in width and decreasing in length from apical tooth to basal tooth, basal tooth separated from middle by distance 1.5 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 larger than basal diameter of setae. Anterior tarsi thickened (Fig. 7c); segment 5 narrow, approximately twice as long as 1–4 combined, without ventro­lateral carina at internal side; largest claw long and narrow, in anterior view (Fig. 8c) slightly curved, narrowly cleft at apex, main branch rounded at apex. First segment of mid and posterior tarsi slightly widened to apex ( Fig. 9c ).

Prosternal process high, apex convex and glabrous on anterior part; posterior part flat, not margined, completely covered with strong punctures and long bristles.

Hypomeron of prothorax smooth, glabrous.

Aedeagus. As in Figures. 13c , and 14c

Female. Differs from male in the following characters: lateral borders of clypeus slightly more curved, apical border wider; punctation of head a little stronger, especially that of clypeus. Sides of elytra slightly narrowed from base to apical fourth, where there is a short widening, and from here to apex more strongly narrowed. Epipleura sharply interrupted just before the widening, (Fig. 10c) and with weak lateral swelling. Anterior tibiae (Fig. 6c) less robust, with anterior and middle teeth short, the basal one closer to middle of tibia, separated from middle one by distance 2 times larger than one that separates middle from anterior one. Anterior tarsi not thickened. Posterior tarsi 1.4 times longer than tibiae, first segment subtriangular, short. Pygidium much shorter, 2.8 times as wide as long; in posterior view with apical borders slightly concave, margined at sides, apex broadly rounded and not margined; in lateral view (Fig. 12c) very weakly convex, almost flat. Last ventrite large, 1.6 times longer than pygidium, 1.8 times as wide as long, in lateral view (Fig. 12c) strongly prominent at base, then flat to slightly concave to apex.

Size. 18–25 mm.

Distribution. Guyana, French Guiana, Surinam, Brazil, Colombia and Venezuela ( Fig. 15 ). Venezuelan and Colombian specimens are new country records.

Specimens Studied. VENEZUELA: Estado Bolívar, Agua Fría, cr. Santa Elena, 1,000 m, 1­9­XI­1966, J. & B. Bechyne­E. Osuna, 2 males, 4 females (MIZA); Icabaru´, 20­VIII­1985, Gadou, 1 male (CCBM); Carret. El Dorado­ Sta Elena, Km 88, 160 m, 27­IX­1967, C. J. Rosales­M. Gelbez­L. Rodríguez, 1 male (MIZA); idem, 29­IX­1967, 1 male, 2 females (MIZA); idem, L. J. Joly­J. L. García, 1 male, 5 females (MHNLS); Sta. Elena de Uairén, 10­XI­ 1966, J. & B. Bechyne­E. Osuna, 1 female (MIZA); Campo Carrao, Edelca, 58559N, 628159W, 6­V­1986, J. Lattke, 1 male (MIZA); Anacoco, 6859N, 61889W, 10­30­VIII­1979, C. J. Rosales­L. J. Joly, 8 males, 14 females (MIZA); Isla de Ratón, 31­VIII­1994, J. Lattke, 1 male (MIZA). Estado Amazonas, Cerro de la Neblina basecamp, 08509N, 66899440W, 140 m, 1­10­III­ 1984, D. Davis­T. Mac Cabe, 1 female (NMNH); Río Baría , 08559N, 668109W, 4­11­II­1984, L. J. Joly­A. Chacón, 1 female (MIZA); Sta Bárbara, 13­VIII­ 1982, CEUM Fac. Agronomía cols., 1 male (MIZA) . COLOMBIA: Amazonas, Leticia, 1­2­II­1969, W. D. Duckworth collector, 4 males, 1 female (NMNH) . BRAZIL: Tefe´, II, 25, F.6160, H. Bassler collection, acc. 33591, 1 male, 1 female (AMNH); Amapa´, Maturaca´, 6­IV­1964, J. & B. Bechyne, 1 male (MIZA), Amazonas, Ducke Res., 25 Km E. Manaus, 6­III­73, B. V. P. & E. Tyson, 1 male (CNCI), Amazonas, Reserva Ducke, Km. 26 Manaus­ Itacoatiara Highway, 15­24­IV­1972, E. G., I. & E. A. Munroe, 1 female (CNCI), Amazonas, 20 Km SW Itapiranga, 9­XI­1969, J. M. & B. A. Campbell, 2 females (CNCI). We have also seen specimens from Guyana ( Georgetown and Maroni River ), French Guiana ( St. Jean ), Surinam and Brazil ( Tefe´ ), in the collection of the National Museum of Natural History , Washington, U S. A., and Canadian National Collection of Insects , Ottawa , Canada .

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).