Psephenops robacki ( Spangler, 1966 ) Barr & Shepard, 2024

Barr, Cheryl B. & Shepard, William D., 2024, A taxonomic review of the genus Psephenops Grouvelle of the Lesser Antilles with description of new species Psephenops trini, and reassignment of Peruvian species Psephenus robacki Spangler (Coleoptera: Psephenidae: Psepheninae), Insecta Mundi 2024 (45), pp. 1-22 : 17

publication ID

https://doi.org/ 10.5281/zenodo.11450152

publication LSID

lsid:zoobank.org:pub:5C9ECB63-6A77-4FF6-8391-BF0F77BE5674

DOI

https://doi.org/10.5281/zenodo.11450190

persistent identifier

https://treatment.plazi.org/id/616D87FE-FFC7-FFDB-FF70-FD54209D3AF3

treatment provided by

Felipe

scientific name

Psephenops robacki ( Spangler, 1966 )
status

comb. nov.

Psephenops robacki ( Spangler, 1966) , new combination

Psephenus robacki Spangler, 1966

( Fig. 17 View Figure 17 )

Type locality. PERU, Huánuco Region, Río Rondos near Tingo María.

Type material examined (photographic). Holotype female. Peru, nr. Tingo / Maria IX-29-55 / Rio Rondos / S. S. Roback // Psephenus / N. SP. / det. PJSpangler // HOLOTYPE / Psephenus / robacki / P.J.Spangler [red label] [ Fig. 17e View Figure 17 ].

Other material examined (n = 7). PERU: Madre de Dios / Manu / July 2005 547 m / Rio Salvacion / 12°50′S 71°21′W / F. Montes & J. Chavez // Psephenops / robacki / W.D.Shepard (1♀, EMEC) GoogleMaps ; PERU: Cusco Region / 3.7 km N Mamabamba / 13 IX 2013 1844 m / unnamed stream / S 13°25.40′ W 70°54.13′ / WDS-A-1925 [on reverse] // William D. / Shepard, leg. (3♀, EMEC) ; PERU: Cusco Region / 10.3 km NE San Miguel / 13 IX 2013 921 m / unnamed stream / S 13°20.57′ W 70°51.54′ / WDS-A-1926 [on reverse] // William D. / Shepard, leg. (1♂, 1♀, EMEC) ; PERU: Región Cusco / Que. [Quebrada] Cadena at Hwy. / 30C SW Vitobamba / −13.3423, −70.8584 / 3-VIII-2022, C.B.Barr (1♂, EMEC) GoogleMaps .

Distribution. Peru, South America.

Remarks. Psephenus robacki was described by Spangler (1966) from three female specimens from the Río Rondos near Tingo María, Peru (Huánuco Region). The holotype ( Fig. 17 View Figure 17 ) and one paratype are at the ANSP; one paratype is at the USNM. Spangler (1966) also described and illustrated a larva, Psephenus sp. larva 1, which was collected in association with adults of the species and assumed to be the larva of P.robacki . At the time, Psephenops was not yet known from South America, and because the type series is female, tarsal modifications particular to Psephenops males are absent. The species rightfully belongs to Psephenops rather than Psephenus based on the morphology of the holotype ( Fig. 17 View Figure 17 ) and Spangler’s illustrations and description. Differences between females of the two genera include the shape and sculpturing of the pronotum, which in Psephenops is more angular laterally and is basally depressed adjacent to a glabrous, shiny median longitudinal carina. We therefore transfer Psephenus robacki Spangler to Psephenops robacki (Spangler) new combination.

We have collected associated male and female Psephenops from one stream in the Cusco Region, Peru, the females of which agree with the species description and the holotype images ( Fig. 17 View Figure 17 ) of P.robacki . At two other nearby sites, and one in the Madre de Dios Region, we collected either males or females. Our collection localities are quite far, roughly 700 km straight line distance, from the type locality. Although we think it likely that our specimens are P. robacki , we cannot be certain unless associated males and females are collected from the type locality. Alternatively, in the absence of males, DNA barcoding might link females from the type locality to males from other localities. Currently P.robacki is the only species of Psephenops known from Peru.

EMEC

Essig Museum of Entomology

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Psephenidae

Genus

Psephenops

Loc

Psephenops robacki ( Spangler, 1966 )

Barr, Cheryl B. & Shepard, William D. 2024
2024
Loc

Psephenus robacki

Spangler 1966
1966
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