Chryasus persimilis 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 : 19

publication ID

https://doi.org/ 10.11646/zootaxa.5492.1.1

publication LSID

lsid:zoobank.org:pub:35055BD1-1925-4947-91BA-5E1CC841071A

DOI

https://doi.org/10.5281/zenodo.13212328

persistent identifier

https://treatment.plazi.org/id/CC09D1B3-9FFE-4F8C-9EB7-89E95A43BA2F

taxon LSID

lsid:zoobank.org:act:CC09D1B3-9FFE-4F8C-9EB7-89E95A43BA2F

treatment provided by

Plazi

scientific name

Chryasus persimilis Prena
status

sp. nov.

17. Chryasus persimilis Prena , new species

( Figs. 7 View FIGURES 5–10 , 24 View FIGURES 16–25 , 46 View FIGURES 34–47 )

http://zoobank.org/ urn:lsid:zoobank.org:act:CC09D1B3-9FFE-4F8C-9EB7-89E95A43BA2F

Diagnosis. This species is most similar to C. carinulosus , C. montyi and C. taironius . They all have similar body proportions and similar male genitalia (unknown for C. carinulosus ). Chryasus clunis is another superficially similar species with the same color, but it is less elongate and the male has a tumid distal ventrite. Chryasus persimilis can be distinguished from all these by its stout rostrum and femora, which measure distinctly less than twice the head diameter.

Description. Total length 1.9–2.5 mm, width 0.8–1.1 mm (n=24); reddish brown, elytron somewhat brighter; body oblong ovate with protruding humeri and curved sides; rostrum 2x as long as eye; pronotum nearly as long as wide, interspaces forming indistinct oblique ridges between non-confluent punctation, flank with larger and more distant pits in smooth area; elytron 2.1x longer than pronotum, disc at base with very subtle transverse depression, interstriae ridged, metaventrite neither modified nor sexually dimorphic, male ventrites 1, 2 and 5 depressed medially and with erect squamulae; femora with 1 distinct and several minute denticles ( Fig. 7 View FIGURES 5–10 ); male genitalia as Fig. 24 View FIGURES 16–25 , endophallus with long, flexible flagellum.

Material examined. Holotype male, labeled “Est. Pitilla, 700 m, 9 km S Sta. Cecilia , P.N. Guanacaste, Prov. Guan., COSTA RICA, C. Moraga, Jul 1991, L-N-330200, 380200”, “INBIO CRI000 358585” ( MNCR) . Paratypes (18 males, 5 females): COSTA RICA . Alajuela: Bosque Eterno de los Niños, Estac. Pocosol , 20.–26.vi.2011, J. Prena, 1 dissected male, 1 female ( JPPC) . Guanacaste: same data as holotype, CRI000 358595, 1 female ( MNCR) , same data as holotype except 4.–25.xi.1991, CRI000 497850, 1 male ( MNCR) , 1.–15.vii.1992, CRI000 690288, CRI000 690310, 2 males ( MNCR) , 6.– 12.3.1996, J. Prena, 2 males ( CMNC) , 6 males, 2 females ( JPPC) , 2 males ( NHMUK) . Heredia: 3 km S Puerto Viejo, Estac. La Selva , 28.vi.1985, H. Hespenheide, 2 males ( JPPC 1 , MNCR 1 View Materials ) , 1.xii.1993, M/14/288, INB0003672898, 1 female ( MNCR) . Puntarenas: P.N. Manuel Antonio, XII/1991, G. Varela, CRI000 464544, 1 dissected male ( MNCR) . PANAMÁ. Cerro Campana , 28.4.1973, H. Hespenheide, 1 dissected male ( JPPC) .

Life history. I found this species in numbers on a flowering, unidentified Melastomataceae in an open habitat at the Pitilla field station, together with C. cavernosus .

Etymology. The name is a Latin adjective.

MNCR

Museo Nacional de Costa Rica

NHMUK

Natural History Museum, London

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Curculionidae

Genus

Chryasus

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