Cyclocaccus speciosus Hisamatsu, 2016

Hisamatsu, Sadatomo, Bayless, Victoria M. & Carlton, Christopher E., 2016, Revision ofCyclocaccusSharp (Coleoptera: Nitidulidae: Nitidulinae), The Coleopterists Bulletin 70 (4), pp. 825-870 : 825-870

Cyclocaccus speciosus Hisamatsu , new species ( Figs. 1E , 5 , Map 1)

Type Series. Holotype ( SEMC): ♂, ‘GUYANA: Region 8 / Iwokrama Forest, 1 km W Kurupukari, / Iwokrama Field Stn. 60 m / 4°40′19″N, 58°41′4″W / 20–25 MAY 2001 / R. Brooks, Z. Falin GUY1BF01 034 / ex: flight intercept trap // SMO567346 / KUNHM–ENT’ . Paratypes: [ GUYANA] 3♂, Iwokrama Forest, Pakatau hills, 70 m, 04°44′54″N, 59°01′36″W, ex: fogging fungus logs, 27. V. 2001, R. Brooks & Z. Falin leg. ( SEMC) ; 2♂ 1♀, ditto, but 28. V. 2001 ( SEMC) ; 1♂ 1♀, Iwokrama Forest, Turtle Mt. base camp, 50 m, 04°43′05″N, 58°43′05″W, ex: fogging fungusy logs, 1. VI. 2001, R. Brooks & Z. Falin leg. ( SEMC) ; 1♀, ditto, but 300 m, 04°43′ 49″N, 59°01′36″W, ex: flight intercept trap, 26–29. V. 2004, R. Brooks & Z. Falin leg. ( SEMC) ; 2♀, ditto, but ex: flight intercept trap, 26–29. V. 2001 ( SEMC) ; 1♂, ditto, but ex: flight intercept trap, 30. V. −2. VI. 2001 ( SEMC) ; 1♀, Iwokrama Forest, Kabocalli Field StN, 60 m, 04°17′04″N, 58°30′35″W, ex: flight intercept trap, 3–5. VI. 2001, R. Brooks & Z. Falin leg. ( SEMC) ; 1♀, same data as the holotype. ( SEMC) . [ SURINAME] 1♂, Brownsberg Nature Preserve, Witi Creek Trail, Brokopondo, 80 m, 04°56′55″N, 55°10′53″W, ex: flight intercept trap, 23–25. VI. 1999, Z. Falin leg. ( SEMC) . [FRENCH GUIANA] 1♀, 7 km N. Les Eaux Claires, 220 m, Säul , 220 m, 03°39′46″N, 53°13′19″W, ex: flight intercept trap, 30. V. –4. VI. 1997, J. Ashe & R. Brooks leg. ( SEMC) ; 1♂, 33.5 km S. and 8.4 km NW of Hwy N2 on Hwy D5, Cayenne , 30 m, 04°48′ 18″N, 52°28′41″W, ex: flight intercept trap, 29. V.–9. VI. 1997, J. Ashe & R. Brooks leg. ( SEMC) . [ ECUADOR] 1♀, Napo, Yasuni, Res. Stn. on mid. Rio Tiputini , 00°40.5′S, 76°24′W, ex: malaise trap, 20–28. VI. 1999, C. Carlton & V. Moseley leg. ( LSAM) ; 1♂ 2♀, Orellena, Yasuni, N.P., Via Maxus at Queb. Piranã Bridge , 00°39.5′N, 76°26′W, ex: malaise trap, 14–24. VI. 2008, A.K. Tischechkin leg. ( ARCC) ; 1♀, Yasuni, N.P., Via Maxus at Queb. Pirana Bridge, Orellena , 00°39.5′N, 76°26′W, ex: malaise trap, 14–24. VI. 2008, A.K. Tishechkin leg. ( ARCC) ; 1♀, Tiputini Biodiversity Stn., Orellena , 00°38.2′N, 76°08.9′W, ex: malaise trap, 27. VII. – 3. VIII. 2008, A.K. Tishechkin leg. ( ARCC) ; 1♂, ditto, but 28. VII. – 3. VIII. 2008 ( ARCC) . [ BRAZIL] 1♀, Serra Norte, Piste Nl km, Pará , 22, 1. XI. 1984, N. Degallier leg. ( SEMC) . [ PERU] 1♂, Amazonas Lodge, N. Atalaya , Madre de Dios, 480 m, 12°52.2′ S, 71°22.6′W, ex: flight intercept trap, 10–13. XI. 2007, D. Brzoska leg. ( SEMC) ; 2♂ 2♀, Pantiacolla Lodge, Alto Madre de Dios R., Madre de Dios, 12°39.3′S, 71°13.9′W, 420 m, ex: flight intercept trap, 14–19. XI. 2007, D. Brzoska leg. ( SEMC) ; 2♀, Pantiacolla Lodge, 5.5 km NW El Mirador Trail, Alto Madre de Dios River , 500 m, 12°39′10″S, 71°15′28″W, ex: flight intercept trap, 23–26. X. 2000, R. Brooks leg. ( SEMC) . [ BOLIVIA] 3♂ 1♀, 67.5 km NE Est. Biol. Valle del Sajita Univ. de San Simon , Cochabamba, 300 m, 17°06′33″S, 64°47′52″W, ex: flight intercept trap, 7–9. II. 1999, R. Hanley leg. ( SEMC) ; 1♀, lowland rain forest, ditto, but 17°06′19″S, 64°46′57″W, ex: flight intercept trap, 7–9. II. 1999, F. Génier leg. ( CMN) ; 1♀, 117 km E. Cochabamba, at Lagunitas , 1,000 m, 17°06′22″S, 65°40′57″W, mountain evergreen forest, ex: flight intercept trap, 1–6. II. 1999, F. Génier leg. ( CMN) .

Etymology. The specific epithet means “beautiful.”

Diagnosis. This species differs from its congeners by the following combination of characters: pronotum and elytra different in color; pronotum with a reddish brown to jet black longitudinal maculation; subcoxal lines on abdominal sternite III absent; pro- and mesotarsal segments II and III of males feebly dilated; apical margin of tegmen narrowly rounded or subtruncate in ventral view; median lobe subparallel at basal 2/3, then strongly converging anteriorly in ventral view; apical margin of median lobe narrowly rounded; apex of long, slender gonocoxites deeply incised.

Similar Species. This new species is similar to C. laeticulus in the round body and similar shape of pronotal maculation, acuminate apical margin of the median lobe, and similar shape of the sclerites of the internal sac. It can be distinguished by the more acute apical margin of the median lobe and deeply incised apex of the ovipositor.

Description. Length 1.79–2.03 (1.87) mm, width 1.43–1.60 (1.55) mm, depth 0.74–0.97 (0.87) mm (n = 5). Male. Body ( Fig. 1E ) round; dorsal disc of head (except paler apical area), antennal club (except paler apical area of segment XI) and scutellum reddish brown to jet black; mouthparts, antennal segments I–VIII, abdominal tergites, and venter reddish yellow; pronotum reddish yellow, with a reddish brown to jet black longitudinal maculation; elytra reddish brown to jet black, usually darker laterally than medially. Head: Dorsal disc possessing sparse, minute punctures; interspaces reticulate. Labrum feebly notched at middle. Antenna ( Fig. 5G ) with club long and large, ACL/ASI-VIII = 0.88 (n = 1); antennal segment XI with 2 oval antennal sensillae; approximate ratio of each segment (n = 1) 4.84: 3.64: 2.69: 1.96: 1.96: 1.02: 1.00: 1.49: 3.95: 4.40: 7.64. Pronotum: 2.38–3.33 (2.94) times as wide as long (n = 5); disc with sparse, minute punctures; interspaces slightly reticulate. Scutellum: Densely punctate; interspaces slightly reticulate. Elytra: 0.88–0.96 (0.92) times as long as wide (n = 5), 2.65–3.73 (3.21) times as long as pronotum (n = 5), widest at basal 1/3; each elytron with 9 regular rows of punctures about as large as eye facet; interstices with sparse minute punctures. Venter: Prosternum feebly convex along midline. Metaventrite strongly convex. Abdominal sternite III without subcoxal lines. Legs: Slender; pro- and mesotarsal segments I–III slightly dilated; tarsal claws simple. Genitalia: Tegmen ( Fig. 5A, C, E ) feebly constricted at mid-length, then moderately convergent apically; TL/TW = 2.39 (n = 1); apical and lateral margins of tegmen strongly undulating in ventral view; apical margin of tegmen narrowly rounded or subtruncate in ventral view; median lobe ( Fig. 5B, D, F ) subparallel-sided at basal 2/3, then strongly converging anteriorly in ventral view; apical margin of median lobe narrowly rounded; sclerites of internal sac as in Fig. 5B . Female. Pro- and mesotarsal segments I–III more weakly dilated than those of males. Ovipositor ( Fig. 5H ) with deeply incised apices of long, slender gonocoxites.

Variability. This species varies in the shape of the apical margin of the tegmen, which may be narrowly rounded, subtruncate, or widely rounded.

Distribution. Guyana, Suriname, French Guiana, Brazil, Ecuador, Peru, and Bolivia (Map 1).

Figures

Fig. 1. Dorsal habitus of Cyclocaccus species in the C. laeticulus species-group. A) C. clinei, holotype, B) C. laeticulus, holotype, C) C. laeticulus, holotype, labels, D) C. laeticulus, Venezuela, E) C. speciosus, holotype, F) C. monticola, lectotype, G) C. monticola, lectotype, labels, H) C. monticola, Guatemala, I) C. monticola, Bolivia, J) C. costaricensis, holotype, K) C. maculatus, holotype, L) C. epakros, holotype. Scale bars = 1 mm.

Fig. 5. Cyclocaccus speciosus. A, C, E) Tegmen, ventral view, B, D, F) Median lobe, ventral view, G) Right antenna, ventral view, H) Ovipositor. A–D, G–H from Guyana specimens; E–F from Bolivia specimen. Scale bars = 0.1 mm.