Chryasus taironius 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 : 15

11. Chryasus taironius Prena , new species

( Figs. 18 , 40 )

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Diagnosis. This species and the Costa Rican C. montyi have the same size and shape, a pronotum with elevated narrow interspaces between fine, coalescent punctation and similar male genitalia ( Figs. 18, 19 ). They differ in color and C. taironius has the pronotal flanks more evenly punctate. Chryasus carinulosus is another similar, plain brown species. Chryasus persimilis has shorter appendages.

Description. Total length 2.9–3.4 mm, width 1.2–1.4 mm (n=4); integument variously reddish brown to black, legs partially and elytron entirely fawn; body oblong ovate with protruding humeri and curved sides; rostrum sexually dimorphic, thinner and longer in female; pronotum with fine, confluent punctation, interspaces forming narrow ridges (indistinct in female), surface texture coarser and shallower on flank; elytron with transverse depression at base, interstriae ridged, metaventrite unmodified and not sexually dimorphic, male ventrites 1, 2 and 5 depressed medially and with erect squamulae; femora with denticles gradually decreasing in size (male) or minute and subequal (female); male genitalia as Fig. 18 , endophallus with long, basally inflexible flagellum.

Material examined. Holotype male, labeled “COLOM[BIA]. Magd[alena]., 7000′, San Lorenzo, 41 km. S Sta. Marta, V-10-1973, Campbell & Howden” ( CMNC) . Paratypes (2 males, 1 female): same site as holotype, Howden & Campbell, 1.v.1973, 1 dissected male ( CMNC) , 5.v.1973, 1 female ( CMNC) , 7.v.1973, 1 male ( JPPC) .

Etymology. The name is a Latinized adjective derived from that of the native, Pre-Colombian Tairona tribes.

Notes. The only available female deviates from the three males. It is somewhat larger, almost entirely black except for the fawn elytron, the pronotal ridges are fragmented and the rostrum has a pit in front of each eye. A male of a smaller species ( Fig. 48 ) was captured at the same site ( CMNC) .

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.

FIGURES 46–48. Chryasus, dorsal and lateral aspects of males. 46, C. persimilis, male, Estac. Pitilla in A.C. Guanacaste, Costa Rica; 47, Chryasus sp. near C. sculpturatus, Município de São Paulo, Brazil; 48, Chryasus sp., San Lorenzo in Magdalena, Colombia.