Cyclocephala bicolor Laporte, 1840

Joly, Luis J., 2009, Review of the species in the Cyclocephala bicolor Laporte species group (Coleoptera: Scarabaeidae: Dynastinae), Zootaxa 2048, pp. 47-64: 49-54

publication ID

http://doi.org/ 10.5281/zenodo.186485

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http://treatment.plazi.org/id/E2083F00-3B0F-FFAB-FF74-FE66FC4D65A6

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Plazi

scientific name

Cyclocephala bicolor Laporte, 1840
status

 

Cyclocephala bicolor Laporte, 1840 

( Figs. 1View FIGURE 1, 3–6, 19View FIGURES 3 – 23, 24–25, 33 – 35, 41–42View FIGURE 24 – 33View FIGURE 34 – 48, 49– 50View FIGURES 49 – 57, 58, 69–70View FIGURE 58 – 77)

Bibliography. Cyclocephala bicolor Laporte 1840: 124  (description). Type (sex?) MNHNAbout MNHN. Type locality: Cayenne. Burmeister 1847: 60 (description), Cayenne. Prudhomme 1906: 13, French Guiana. Bodkin 1919: 215, British Guiana. Höhne 1923: 359 (compared with C. vestita  ). Arrow 1937: 8, Guiana. Blackwelder 1944: 251, Guiana. Endrödi 1964: 442 (compared with C. bicolorata  ), Fig. 11View FIGURES 3 – 23 (genitalia). Endrödi 1966: 91 (key, male), 140, 143 (key, female), 156 (description male, female), Figs. 386–397 (genitalia), Venezuela, British Guiana, French Guiana, Suriname, Brazil. Gruner 1971: 845, French Guiana. Dechambre 1979: 160, Venezuela, British Guiana, French Guiana, Suriname, Brazil. Endrödi 1985: 109 (key, male), 146 (key, female), Figs. 648–649 (genitalia), French Guiana, Suriname, Guyana, Brazil. Ratcliffe 1992: 187 (compared with C. sarahae  ). Lachaume 1992: 16, plate 1, Fig. 28View FIGURE 24 – 33, Guyana, French Guiana, Suriname, Brazil. Dechambre 1992: 67 (compared with C. dichroa  ), Fig. 32View FIGURE 24 – 33 (genitalia), plate 1, Fig. 28View FIGURE 24 – 33.

Description. Short, oval, moderately shiny. Brownish red, frons and vertex black, elytra testaceous. Dorsal surface and pygidium glabrous, ventral pubescence sparse. Length: 9.0–13.0 mm.

MALE: Clypeus ( Fig. 3View FIGURES 3 – 23) about 2.3 times as wide across base as long; sides straight, strongly convergent to truncated and feebly reflexed apex; shallowly sulcate longitudinally along middle and shallowly depressed laterally before apex, in lateral view flat to slightly concave on apical half; surface finely alutaceous, with fine, shallow and widely annulate punctures, annulation wide, not well defined posteriorly, usually confluent, appearing as irregular and fine, more or less transverse striae; punctures simple toward apex and anterior half of sides. Frontoclypeal suture thin, arcuately projecting posteriorly. Frons width about 2.5 times transverse diameter of eye, finely alutaceous; punctures similar to those of clypeus, but less dense, somewhat thinner and better delimited.

Mandibles with external border sinuate, apex projecting externally. Maxillae ( Fig. 6View FIGURES 3 – 23) with galea moderately robust, with two apical, one median, and three basal teeth; basal teeth very small and arising from common base; stipes projected anteriorly on inner side and with a brush of fine, black setae on apex of projection; maxillary palpi ( Fig. 19View FIGURES 3 – 23) moderately robust, second palpomere longer than third, weakly widened towards apex, fourth palpomere fusiform, 2.5 times longer than preceding. Labium ( Fig. 5View FIGURES 3 – 23) with sides almost parallel on basal two-thirds, constricted at middle of apical third; apex truncate on middle and fimbriate with long, fine yellowish-golden setae; surface almost flat, with some very small punctures on disc and one longitudinal series of long bristles on each side, converging towards base.

Antennae with 10 antennomeres, club more than 2.0 times the length of antennomeres 2–7 together.

Pronotum 1.5 times as wide as long, widest near base, sides more strongly convergent to apex on anterior half; anterior border widely and arcuately projected at middle; basal angles widely rounded; basal border without marginal bead, almost uniformly arcuate, slightly more projected in central third; surface smooth (40 X); punctures annulate, moderately fine and dense, the distance between most punctures on disc, as long as or longer than diameter of punctures, punctures gradually larger and denser towards sides, the diameter of a puncture at basal angle at least 2.0 times the diameter of those on center of disc, more dense on basal angles, where the distance between most punctures is as large or smaller than the diameter of a puncture; all surface also covered with numerous minute punctures (50 X or more). Scutellum triangular, sides feebly arcuate, apex briefly rounded; punctures similar to those of pronotal disc.

Elytra 1.1 times as long as wide, arcuately widened from first quarter to middle, then rounded to apex, sutural angle well defined, but rounded; humeral and apical umbones weak, with a feeble, short, elongate tumescence behind humeral umbones on external border; surface smooth, with large, shallow, annulate punctures, much smaller on sides and apex, double rows not evident, additional numerous minute punctures (50 X or more) scattered over the surface; sutural interstria flat, slightly elevated on apical half. Epipleura narrow, more so apically.

Pygidium 2.0 times as wide as long; in posterior view the inferior borders slightly convex, converging to feebly convexly truncated apex at an angle distinctly greater than 90 °; in lateral view ( Fig. 62View FIGURE 58 – 77) uniformly convex; surface smooth, shining, with large annulate punctures, punctures more dense on lateral angles; on apex more shining, the punctures smaller and less dense, the distances between most punctures less than 2.0 times their own diameter.

Protibiae (fig. 24) tridentate, small basal tooth separated from the intermediate tooth by a distance 1.5 times as long as that between the intermediate and the anterior teeth; intermediate and anterior teeth well developed, basal tooth with its anterior border more or less perpendicular to long axis of tibiae; apical spur almost straight, surpassing the apex of the first tarsomere. Protarsi ( Fig. 34–35View FIGURE 34 – 48) enlarged; tarsomere 5 shorter than 1–4 together, without ventrointernal carina, ventral side with short and fine longitudinal striae on inner side of apex and sometimes also on inner side of base; tarsomere 4 longitudinally striated on about apical half, tarsomere 3 on apical third; largest claw ( Fig. 41–42View FIGURE 34 – 48) wide, flattened, moderately widely cleft at apex, both branches feebly divergent (external border of small branch not continuous with internal curvature of the claw). Metafemur ( Fig. 49View FIGURES 49 – 57) about 2.3 times as long as its maximum width. Metatibiae ( Fig. 49View FIGURES 49 – 57) robust, widened at apex, bristles on diagonal carina and apex strong. Metatarsi ( Fig. 33View FIGURE 24 – 33) subequal in length to tibiae, with first tarsomere widened towards apex, with apical bristles similar to those of apex of tibiae.

Prosternal projection high, apex alutaceous, anterior part transversely oval, externally pointed; posterior part shorter but wider than anterior, posterior border fimbriate with long bristles.

Pronotal hypomera alutaceous, with sparse, erect setae. Mesopleura, metapleura, and sides of metasternum alutaceous, with large and very dense confluent, annulate punctures; disc of metasternum smooth, with small, scattered punctures; metacoxae with punctures similar to those of pleurae but smaller and more disperse. Ventrites with annulate, moderately dense punctures, punctures smaller and sparser on apical ventrites.

Aedeagus: Figs. 69–70View FIGURE 58 – 77.

FEMALE: differs from the male in the following characters: punctation generally stronger, that of pygidium of the same size; protibiae Fig. 25View FIGURE 24 – 33; protarsi slender; posterior femora ( Fig. 50View FIGURES 49 – 57) somewhat stronger; epipleura ( Fig. 58View FIGURE 58 – 77) strongly narrowed at level of metacoxa, then widened up to level of middle of fourth ventrite.

Distribution: Venezuela, Colombia, Guyana, Suriname, French Guiana, Brazil, Peru, and Bolivia. Colombia, Peru, and Bolivia are new country records.

Specimens studied: VENEZUELA: Amazonas: Coromoto, Dto. Atures, VI- 1979, 1 F ( HAHC). Culebra, Caño Negro, P. N. Duida-Marahuaca, 3 º 33 ’ N, 65 º 55 ’ W, 6-16 -X- 1983, Exped. Terramar, 4 F ( MIZAAbout MIZA). La Esmeralda, LF Station, 01-X- 1997, leg. Krimse, 1 F ( MIZAAbout MIZA). Pto. Ayacucho, 22 -IV- 1967, P. J. Anduze, 1 M ( HAHC); 4-15 -XII- 1992, G. Romero, 1 F ( MIZAAbout MIZA). San Carlos de Río Negro, 7-13 - 1982, A.

Chacón-G. Yépez, 1 M, 15 F ( MIZAAbout MIZA); idem, 1 º 55 ’ N, 67 º 01’ W, 4-14 -III- 1984, J. Clavijo-J. De Marmels, 1 F ( MIZAAbout MIZA). San Fernando de Atabapo, 17 -VIII- 1982, CEUM Fac. Agronomía, 1 F ( MIZAAbout MIZA). Santa Lucía, 15-21 - XI- 1982, A. Chacón-G. Yépez, 1 F ( MIZAAbout MIZA). Talud Cerro Aracamuni, 1 º 29 ’ N, 65 º 38 ’ W, 600 m, 18-24 -X- 1987, Exped. Terramar, 3 M, 4 F ( MIZAAbout MIZA). Bolívar: Anacoco, 60 m, 6 º 5 ’ N, 61 º 8 ’ O, 10-30 -VIII- 1979, Expedición La Salle, 3 M, 2 F ( MIZAAbout MIZA). Canaima, Río Carrao, (Campamento Yuri), 9-15 -II- 1972, J. M. Ayala, 1 F ( JMAL). El Paují, 100 Km O Sta. Elena, 1100 m, 5 -IV- 80, 2 M, 2 F ( CCBM). El Dorado-Sta. Elena, Km 88, 160 m, 28 -IX- 1967, C. J. Rosales-M. Gelbez-L. Rodríguez V., 2 F ( MIZAAbout MIZA); 27 -IX- 1967, L. J. Joly, 1 F ( MHNLSAbout MHNLS). El Dorado-Sta. Elena, Km 109, 460 m, 6 -IX- 1964, P. J. Salinas, 1 F ( MIZAAbout MIZA). Carret. El Dorado- Sta. Elena, Km 88, 100 m, 27 -IX- 1967, L. J. Joly, 1 F ( MHNLSAbout MHNLS); idem, 200 m, 7 -IV- 80, C. Bordón, 1 F ( CCBM). 5 Km E Caicara, 11 -VI- 1996, B. D. Gill, 1 M ( BDGC). Carret. Caicara-San Juan de Manapiare, Km 170, 300 m, 21-30 -XII- 1973, J. L. García, 1 M ( HAHC). Cerro Guaiquinima, 1000 m, 5 º 53 ‘ N, 63 º 30 ’ O, 3- 4 -II- 1990, Exped. FUDECI, J. De Marmels-A. Chacón, 2 F ( MIZAAbout MIZA). Guri, Río Caroní, 100 m, 16 -XI- 1966, J. & B. Bechyne-E. Osuna, 3 F ( MIZAAbout MIZA); 11 -IV- 1968, J. Salcedo, 1 M, 1 F ( MIZAAbout MIZA). Kamarata, 450 m, 24 -II- 1978, L. J. Joly, 2 M, 5 F ( MIZAAbout MIZA). Kanarakuni, Alto Caura, 450 m, 10-13 -IX- 1964, F. Fernández Y.-J. Bechyne, 5 F ( MIZAAbout MIZA). 35 Km N Las Trincheras, 17 -VI- 1987, S. & J. Peck, woodland, forest edge, UV trap, 15 Km N Corocito, 2 M ( HAHC). Los Pijiguaos, 190 m, Exped. MIZAAbout MIZA, UCV, 3-13 -VI- 1992, 4 M, 4 F ( MIZAAbout MIZA). Pendare, Río Parguaza, 6 º 6 ’ N, 67 º 5 ’ W, 6-7 -VI- 1997, E. Osuna-A. Chacón-F. Rojas, 1 M, 38 F ( MIZAAbout MIZA). Río Caroní, Salto Las Babas, 8-10 -IV- 1983, Exped. Inst. Zool. Agric., 5 M, 5 F ( MIZAAbout MIZA). Río Caura, El Playón, 23 -XI- 1978, 3 F ( MIZAAbout MIZA). Río Caura, Salto Pará, 250 m, 21 -XI- 178, B. Bechyné, 3 F; idem, 20-22 - XI- 1978, A. Chacón, 1 F ( MIZAAbout MIZA). Río Caura, Jabillal, 100 m, 25 -XI- 1978, A. Chacón, 2 F ( MIZAAbout MIZA). Río Guaniamo, 6 º 45 ’ N, 66 º 01’ O, 160 m, 25-28 -V- 1979, J. Clavijo-A. Chacón-G. Yépez, 3 M, 2 F ( MIZAAbout MIZA). Río Paragua, E Río Cachicamo, 425 m, 11 -IV- 1983, Exped. Inst. Zool. Agric., 1 F ( MIZAAbout MIZA). San Ignacio de Yuruaní, Gran Sabana, 830 m, 19 -IV- 1988, A. Chacón, 1 M ( MIZAAbout MIZA). Suapure, Caura River, V- 27-1899, E. A. Klages, 1 M ( HAHC). Uonquen, 850 m, 4 -III- 1966, A. Pérez, 1 F ( MIZAAbout MIZA). Táchira: Navay, 200 m, 30 -X- 78, C. Bordón, 1 F ( CCBM). COLOMBIA: Caquetá, Río Caquetá at Tres Esquinas, 18 -I- 1969, R. E. Dietz IV, 1 M ( NMNHAbout NMNH). GUYANA: British Guiana, 4 M, 1 F ( AMNHAbout AMNH), 1 M ( MIZAAbout MIZA). Demerara (Bartica), R. J. Crew, 1 M, 3 F ( NMNHAbout NMNH). Kamakusa, Jan, 1923, 1 M, 1 F, ( AMNHAbout AMNH). Kartabo, Bartica District, 7 -IX- 1920, Wm. L. Beebe collection, 1 F ( AMNHAbout AMNH); 11 -X- 1920, Gift of N. Y. Zool. Soc. 1 F ( AMNHAbout AMNH). Mazaruni, Potaro District, Takuku Mountains, 6 º 15 ’ N, 59 º 5 ’ W, 7 -XII- 1983, at blacklight in forest clearing near streams, Earthwatch Research Expedition, P. J. Spangler & W. E. Steiner, 1 M ( NMNHAbout NMNH). Penal settlement, Bartica District, 1917, Gift of N. Y. Zool. Soc., 1 F ( AMNHAbout AMNH). Rupununi, XI, 1913, 1 F ( AMNHAbout AMNH). Rockstone, Essequibo River, 4 F ( NMNHAbout NMNH). Tumatumari, 1918, 19 F ( AMNHAbout AMNH), 1 F ( MIZAAbout MIZA); idem, VIII, 1913, 1 M, 17 F ( AMNHAbout AMNH). Tumatumari, Potaro R., 29 -VI- 1927, Cornell Unv. Lot 760 Sub 117, 1 F ( HAHC). SURINAME: Aibinia, 29 - VII- 1975, D. Engleman, at light, 1 F ( UNSMAbout UNSM). Brokopando District, Brownsberg Natuurpark, Mazaroni Plateau, 400–500 m, 20 August 1982, W. E. Steiner, Earthwatch Suriname Expedition, August 1982, Collins, Early, Oberman, Pollock, Putnem, Steiner, 4 M, 2 F ( NMNHAbout NMNH). Moengo Boven, Cottica, 16 -V- 1927, Cornell Univ., Lot 760, Sub. 60, 1 F ( NMNHAbout NMNH). FRENCH GUIANA: Kaw Rd. PK 37, 19 -VIII- 1995, 1 M ( UNSMAbout UNSM). Maroni River, 1 F ( NMNHAbout NMNH). Route de Petit Saut PK 9 25 -VIII- 2000, Y. Ponchel, 5 M ( HAHC). St. Jean, W. M. Schaus col. 7 F ( NMNHAbout NMNH). 13 Km W D- 5, Risq. Rd. 14 -VIII- 1995, J. E. Wappes, 3 M, 6 F ( UNSMAbout UNSM); 22 -VIII- 1995, 2 M, 1 F ( UNSMAbout UNSM), 1 M, 1 F ( HAHC). BRAZIL: Robinson bequest, 1929, 1 F ( NMNHAbout NMNH). Amazonas: AM 0 10, Km 244, 20 -I- 1977, B. C. Ratcliffe, 7 M, 6 F ( UNSMAbout UNSM). AM 0 10, Km 268, 18 -I- 1977, B. C. Ratcliffe, 3 F ( UNSMAbout UNSM). Manaus, 30 -X- 83, C. Bordón, 2 M, 1 F ( CCBM); 13 -I- 1978, B. C. Ratcliffe, 4 M, 2 F ( UNSMAbout UNSM); 13 -XI- 1978, B. C. Ratcliffe, 3 M, 3 F ( UNSMAbout UNSM). CEPLAC, 30 Km NE Manaus, 12 -XII- 1976, B. C. Ratcliffe, 1 M, 1 F ( UNSMAbout UNSM). Amapá: Serra Lombard Lomao, 24 -VIII- 1961, J. & B. Bechyne, 3 F ( MIZAAbout MIZA). Ceará: Fortaleza, IX- 1943, at light, Mac Creary, 1 F ( NMNHAbout NMNH). Mato Grosso: Reserva Humboldt, 10 º 11 ’ S, 59 º 48 ’W, 13-14 -VII- 1977, B. C. Ratcliffe, 1 F ( UNSMAbout UNSM). Pará: Braçança, 20 -I- 1949, J. M. Díaz, 1 M ( HAHC). Rio Negro, Santa Isabel, X- 1930, Holt, Blake & Agostini, 5 F ( NMNHAbout NMNH). Cachimbo, 400 m, 14 / 21 -IX- 1955, L. Travassos & Oliveira, 5 M, 1 F ( HAHC). Rio Xingu Camp., 3 º 39 ’ S, 52 º 22 ’ W, ca 60 Km S Altamira, 1-7 -X- 1986, 1F ( NMNHAbout NMNH). Santarem, IX- 1933, L. C. Scaramuzza, 2 F ( NMNHAbout NMNH). Pernambuco: Recife, 10 -X- 50, Asua leg, 1 F ( HAHC). Río Grande do Norte: Natal, VIII-X- 1954, 1 M ( HAHC). Rondonia: Porto Velho, Rio Madeira, Mann & Baker, 1918, 1 F ( NMNHAbout NMNH). Terr. Acre: Río Branco, 15 -V- 1952, M. Alvarenga col., 1 F ( HAHC). Ro. (?): Santa Cruz da Serra, 20 -VIII- 85, J. P. Caldwell, 3 F ( HAHC). I have also seen specimens from BOLIVIA: Beni, Guayamerin ( AMNHAbout AMNH). BRAZIL: Amazonas: Pará ( AMNHAbout AMNH). PERU: Tingo María ( AMNHAbout AMNH).

Other localities: SURINAME: Pakira-Iméné; Paramaribo; Demerara. FRENCH GUIANA: Acarouany; Ante cume Pata (Haut Kialo); Carbet République; Cayenne; Fleuve Oyapock, du Saut-Maripa à Massikiri; Kourou fôret; Mana; Organabo; route Conte; Saint Élie; Sinnamary. BRAZIL: Gorotire; São Felix do Xingu (Moyen Xingu) ( Endrödi 1966, Gruner 1971, Dechambre 1979).

MNHN

Museum National d'Histoire Naturelle

MIZA

Museo del Instituto de Zoologia Agricola Francisco Fernandez Yepez

MHNLS

Coleccion de Mastozoologia, Museo de Historia Natural de La Salle

NMNH

Smithsonian Institution, National Museum of Natural History

AMNH

American Museum of Natural History

UNSM

University of Nebraska State Museum