Chryasus densus (Casey) Prena, 2024
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 |
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
Kingdom |
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Phylum |
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Class |
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Order |
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Family |
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Genus |
Chryasus densus (Casey)
Prena, Jens 2024 |
Psiona densa
Davis, S. R. 2011: 153 |
Casey, T. L. 1922: 321 |
Psiona opaca
Casey, T. L. 1922: 321 |