Chryasus densus (Casey) 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 : 16-18

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.13212324

persistent identifier

https://treatment.plazi.org/id/326487E8-193A-FFC1-FF67-AA33FE23FE08

treatment provided by

Plazi

scientific name

Chryasus densus (Casey)
status

comb. nov.

15. Chryasus densus (Casey) , new combination

(Figs. available at https://collections.nmnh.si.edu)

Psiona densa Casey (1922: 321 View in CoL , description), Davis (2011: 153, character matrix).

Psiona opaca Casey (1922: 321 View in CoL , description); new synonymy.

Diagnosis. Chryasus densus is an elongate, 2.4–2.8 mm long species with a coarsely, somewhat confluently punctate pronotum as in C. cavernosus , but lacks a deeply punctate pronotal collar.

Material examined. BRAZIL. Mato Grosso: Chapada dos Guimarães, 1882–1886, H.H. & A. Smith, syntypes of P. densa ( USNM 4), holotype of P. opaca (USNM) .

Notes. Psiona opaca is a small female of P. densa , not a distinct species. All five specimens known to me were collected by Herbert H. Smith and his wife while on contract with the Museu Nacional, Rio de Janeiro. Smith violated the contract by illegally exporting more than 300,000 arthropod specimens to the United States and subsequently selling them to the Carnegie Museum and numerous private collectors ( Kunzler et al. 2011), among them Casey. Holland (1919) seems to have been under the impression that he and his museum had acquired Smith’s permitted share of duplicate specimens, which was the case for everything else but not for the arthropods. None of the latter material was ever returned and, without question, this issue has contributed to the present strict export policy by Brazilian authorities.

USNM

Smithsonian Institution, National Museum of Natural History

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Curculionidae

Genus

Chryasus

Loc

Chryasus densus (Casey)

Prena, Jens 2024
2024
Loc

Psiona densa

Davis, S. R. 2011: 153
Casey, T. L. 1922: 321
1922
Loc

Psiona opaca

Casey, T. L. 1922: 321
1922
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