Chryasus macer Prena, 2024

Prena, Jens, 2024, Consolidation of Aniops Casey, Psiona Casey, Preglyptobaris Bondar and Prospoliata Hustache with Chryasus Champion (Coleoptera, Curculionidae, Baridinae) and descriptions of new species, Zootaxa 5492 (1), pp. 1-24 : 13

9. Chryasus macer Prena , new species

( Figs. 17 , 38 )

http://zoobank.org/ urn:lsid:zoobank.org:act:8F74C8F0-CB1A-40F1-86CC-AF2A2E1F127A

Diagnosis. This is a small, slender, black species with some yellow hairs ( Fig. 38 ). Other elongate species in the same mountain range are stouter and almost always with red or yellow color pattern. All of them need further study.

Description. Total length 2.6–2.9 mm, width 1.1–1.2 mm (n=3); integument mostly black, appendages with some red; body elongate, humeri almost flush with subconical pronotum, disc densely vermiculate, flanks smoother with coarse shallow ridges; elytron 3.0x longer than pronotum, disc at base with transverse depression, interstriae ridged, metaventrite tumid with basally deep discrimen, male ventrites 1, 2, 5 and metaventrite depressed medially, 1, 2 and 5 with erect squamulae; femora with 1 distinct and several minute denticles; male genitalia as Fig. 17 , endophallus without flagellum but with elongate sclerite homologous with basal appendage of flagellum of other species.

Material examined. Holotype male, labeled “ Costa Rica: Puntarenas, Finca Eddie Serrano, km 71 Pan Am Hwy. , 2600 m, 9° 38′ 25″ N 83° 51′ 04″ W, 22.III.2003, R. Anderson ” ( CMNC) . Paratypes (1 male, 1 female): same data, dissected male ( JPPC), female ( CMNC) .

Etymology. The name is a Latin adjective meaning thin. It refers to the general appearance of the species and is a reference to the nemonychid Atopomacer Kuschel , the genus actually targeted at this site by Carlos Viquez, Bob Anderson and myself.

Figures

FIGURES 16–25. Chryasus, male genitalia, dorsal aspects. 16, C. wappesi; 17, C. macer; 18, C. taironius; 19, C. montyi; 20, C. cavernosus; 21, C. clunis (Cerro Cacao, Costa Rica); 22, Chryasus sp. nr. C. clunis (Machaquilá, Guatemala); 23, Chryasus sp. nr. C. clunis (Cerro Azul, Panamá); 24, C. persimilis; 25, Chryasus sp. nr. C. sculpturatus (São Paulo, Brazil).

FIGURES 34–47. Chryasus talamanca complex, dorsal and lateral aspects. 34, Male holotype, Buquete in Chiriquí, Panamá; 35, Female paratype, Buquete in Chiriquí, Panamá; 36, Teneral female from gall of Miconia pittieri, Monteverde in Puntarenas, Costa Rica; 37, Female, P.N. Tapantí in Cartago, Costa Rica.