Chryasus wappesi 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 : 7-8

5. Chryasus wappesi Prena , new species

( Figs. 11, 12 , 15 , 16 , 30 ) http://zoobank.org/ urn:lsid:zoobank.org:act:87652F3C-2148-412A-B5CA-5160241311DB

Diagnosis. This is the smallest of the large humped species with male metaventral protuberance. It is less cuneate than the others and connects to the more ovate, medium-sized species, such as C. plagiatus .

Description. Total length 4.3–4.9, width 2.3–2.6 mm (n=4); integument black, antenna, tibia, tarsus and elytron dark reddish brown; body elongate rhomboidal, sides of pronotum and elytra for most parts gradually converging, pronotum moderately vaulted, distinctly vermiculate on disc and shallowly punctate on flank, elytron with slight basal tumidity, interstriae ridged, male metaventral protuberances with anterior edge strongly produced and deeply cleft by discrimen, male ventrites 1, 2, 5 and metaventrite with erect squamulae; all femora with secondary denticles but barely perceptible on fore leg; male genitalia as Fig. 16 , endophallus with moderately long, inflexible flagellum.

Material examined. Holotype male, labeled “ French Guiana, Amazone Nature Lodge , Kaw Rd. 6, VIII/11- 23/2017, Morris & Wappes”, “ 4.550330, 52.170310, beating vegetation” ( CMNC) . Paratypes (2 males, 1 female): Venezuela, Bolivar, El Pauchi near Santa Elena, 1.i.1995, G. Hillert ( JPPC).

Additional material. Brazil, Pôrto Platon (Amapá), 1 male ( USNM).

Etymology. The name is given for the late Jim Wappes, collector of the holotype and generous friend.

Notes. Not included in the type series is a male from Brazil with somewhat deviant interstrial ridges.

Figures

FIGURES 11–12. Externally visible apical tergites of Chryasus wappesi. 11, male with stridulatory files on tergite 7; 12, female without stridulatory files on tergite 7, tergite 8 internalized.

FIGURES 13–15. Changes in extension and relative position of morphological parts on the prosternum associated with increased gibbosity of the pronotum and simultaneously shortened prosternum (ID = intercoxal distance; LR = length of lateral ridge of prosternal channel). 13, Chryasus montyi, with ID <LR; 14, Chryasus sp. near C. bruniceps, Costa Rica (see Fig. 33), with ID = LR; 15, Chryasus wappesi, with ID> LR.

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 30–33. Chryasus, dorsal and lateral aspects of males. 30, C. wappesi, El Pauchi in Bolivar, Venezuela; 31, C. plagiatus, Puerto Viejo de Sarapiquí in Heredia, Costa Rica; 32, C. bruniceps, Agua Preta in Bahia, Brazil; 33, Chryasus sp., Finca E. Rojas north of Cariari in Limón, Costa Rica.