Cyclocaccus costaricensis 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 costaricensis Hisamatsu , new species

( Figs. 1J , 7 , Map 3)

Type Series. Holotype ( SEMC): ♂, ‘COSTA RICA: San Jose / Pan American Hwy. km. 70 / Mirador El Quetzal , 2650 m / 9°38′37″N, 83°51′ 02″W / 20 JUL 2000; J. Ashe, R. Brooks, / Z. Falin CR1ABF00 195 / ex: fogging fungus covered log // SMO242710 / KUNHM–ENT’ . Paratypes: [ COSTA RICA] 1♂ 1♀, km. 117 Pan American Hwy., 19 km N. San Isidro , San José, 1,800 m, 09°28′00″N, 83°42′20″W, ex: flight intercept trap, 20–25. VI. 1997, S. & J. Peck leg. ( CNC) :; 1♀, 2.4 km ENE Sn Gerardo de Rivas, Cloudbridge Reserve, Ridge trail, San José, 2,140 m, 09°28.07′N, 83°33.84′W, ex: flight intercept trap, 9–12. VI. 2004, J.S. Ashe, Z. Falin & I. Hinojosa leg. ( SEMC) ; 1♂ 2♀, same data as the holotype ( SEMC) ; 1♂ 1♀, Pan American Hwy. km. 80.5, 9 km SSW Albergue de Montana Savegre, Upper Quebrada–Las Robles Trails , San José, 2,200 – 2,300 m, 09°32′56″N, 83°48′09″W, ex: gilled mushroom, 23. VII. 2000, J. Ashe, R. Brooks & Z. Falin leg. ( SEMC) ; 1♂, ditto, but ex: fogging fungus covered log. ( SEMC) ; 1♀, km. 45, Int. Amer. Hwy. , 6 km N.E. El Empalme, San José / Cartago, 1,975 m, 09°45′00″N, 83°58′30″W, ex: flight intercept trap, S. & J. Peck leg. ( CNC) ; 1♀, Pan American Hwy. km 80.5, 7 km SSW, Cabinas de Quetzal , San José, 2,150 m, 09°33′ 53″N, 83°48′05″W, ex: fogging fungus covered log, J. Ashe, R. Brooks & Z. Falin leg. ( SEMC) ; 1♂, Rio Macho, 3 km E. de Villa Mills, Camino Principal del Cattie , Cartago, 2,750 m, 6. VII. 1996, A. Picado leg. ( INBIO) ; 1♂, Genesis II Reserve , San José, 2,360 m, 09°42.57′N, 83°54.64′W, ex: orange gilled mushrooms on log, 14. VI. 2004, J.S. Ashe, Z. Falin & I. Hinojosa leg. ( ARCC) .

Etymology. The specific epithet refers to the country of occurrence, Costa Rica.

Diagnosis. This species differs from other congeners by the following combination of characters: pronotum and elytra different in color; pronotum with dark reddish brown longitudinal maculation at middle, possessing two vague lateral markings on each side of the maculation; antennal segment XI with one oval antennal sensilla; pro- and mesotarsal segments II and III of males moderately dilated; apical margin of tegmen truncate, shallowly emarginate at middle in ventral view; median lobe subparallel-sided at basal 1/3, then moderately converging anteriorly in ventral view; median lobe in ventral view subparallel-sided at basal 1/3, then moderately converging anteriorly; apical margin of median lobe widely rounded in ventral view; apex of long, slender gonocoxites deeply incised, somewhat swollen at apices.

Similar Species. This new species is similar to C. maculatus , in having one antennal sensilla and similar shape of body maculation and male genitalia, but can be distinguished by the following combination of characters: abdominal tergite VII and venter without maculation, apex of ovipositor more deeply incised and swollen apically. It is also similar to C. monticola , in having similar body maculation and shape of male genitalia, but can be distinguished by the following combination of characters: antennal segment XI with one oval antennal sensilla; gonocoxites somewhat swollen at apices.

Description. Length 1.92–2.32 (2.10) mm, width 1.47–1.80 (1.65) mm, depth 0.93–1.10 (1.00) mm (n = 5). Male. Body ( Fig. 1J ) oval; dorsal disc of head and antennal club dark brown except apical areas of head and club paler; antennal segments I–VIII and venter reddish yellow; pronotum reddish yellow, with dark brown longitudinal maculation at midline, possessing 2 vague lateral markings; scutellum and elytra reddish brown. Head: Dorsal disc possessing sparse, minute punctures; interspaces reticulate. Labrum feebly notched at middle. Antenna ( Fig. 7C ) with club long and large, ACL/ASI-VIII = 0.74 (n = 1); antennal segment XI with an oval antennal sensilla; approximate ratio of each segment (n = 1) 3.13: 2.10: 2.05: 1.57: 1.71: 1.15: 1.13: 1.00: 3.23: 2.86: 4.21. Pronotum: 2.99–3.48 (3.28) times as wide as long (n = 5); disc possessing sparse, minute punctures; interspaces reticulate. Scutellum: Disc possessing few minute punctures; interspaces reticulate. Elytra: 0.98–1.06 (1.02) times as long as wide (n = 5), 3.61–4.44 (4.00) times as long as pronotum (n = 5), widest at basal 1/3; each elytron with 9 regular rows of deep, large punctures; interstices without punctures or with few minute punctures. Venter: Prosternum feebly convex along midline. Metaventrite strongly convex. Abdominal sternite III without subcoxal lines. Legs: Slender; pro- and mesotarsal segments I to III moderately dilated; tarsal claws simple. Genitalia: Tegmen ( Fig. 7A ) constricted at middle, then moderately convergent apically in ventral view; TL/TW = 1.71 (n = 1); apical and lateral margins of tegmen strongly undulating in ventral view; apical margin of tegmen truncate, shallowly emarginate at middle in ventral view; median lobe ( Fig. 7B ) subparallelsided at basal 1/3, then moderately converging anteriorly in ventral view; apical margin of median lobe widely rounded; sclerites of internal sac as in Fig. 7B . Female. Pro- and mesotarsal segments I–III more weakly dilated than those of males. Ovipositor ( Fig. 7D ) with long, slender gonocoxites deeply incised at apex and slightly swollen.

Distribution. Costa Rica (San José and Cartago) (Map 3).

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. 7. Cyclocaccus costaricensis, Costa Rica. A) Tegmen, ventral view, B) Median lobe, ventral view, C) Right antenna, ventral view, D) Ovipositor. Scale bars = 0.1 mm.