Hydrochus metallipes Knisch

Perkins, Philip D., 2019, Type designations for Neotropical water beetles in the genus Hydrochus Leach 1817 (Coleoptera: Hydrochidae), Zootaxa 4701 (2), pp. 149-167: 156-157

publication ID

https://doi.org/10.11646/zootaxa.4701.2.2

publication LSID

lsid:zoobank.org:pub:69045F2D-1E16-427B-939E-9F0A6D047D05

DOI

http://doi.org/10.5281/zenodo.5944922

persistent identifier

http://treatment.plazi.org/id/C17B87FF-3C39-123E-C0E6-FC33FC82F69F

treatment provided by

Plazi

scientific name

Hydrochus metallipes Knisch
status

 

Hydrochus metallipes Knisch  

Figs. 6 View FIGURE 6 , 13A View FIGURES 13

Hydrochous metallipes Knisch 1920: 56   .

The RBINS kindly provided eighteen syntypes of Hydrochus metallipes Knisch   , which are part of the Orchymont/ Knisch types collection. The syntypes consist of both males and females. I have selected one of the males, a specimen in good condition, to serve as lectotype, have labeled it such, and have imaged the habitus, male genitalia and labels of this specimen ( Figs. 6 View FIGURE 6 , 13A View FIGURES 13 ). The seventeen non-lectotype syntypes have been labeled as paralectotypes. Lectotype labels ( Fig. 13A View FIGURES 13 ): “Bras.Corumba [Matto Grosso] // det. Kniž metallipes m. // Coll. A.Knisch TYPUS // coll. A. d’Orchymont: Hydrochus   R.M.H.N.B. 15.962 // TYPE // HABITUS/GENIT. DIGITAL IMAGES captured 2019 P.D. Perkins // [red] LECTOTYPE Hydrochus metallipes Knisch   desig. P. D. Perkins // Hydrochus tarsalis Chevrolat, 1863   , det. P. D. Perkins, 2019.” The male genitalia of the lectotype of Hydrochus metallipes Knisch 1920   does not differ significantly from the male genitalia of the neotype of Hydrochus tarsalis Chevrolat 1863   . H. metallipes   is therefore reduced to status of junior synonym of H. tarsalis Chevrolat.  

Remarks. Oliva (1992) published a drawing of the male genitalia of, supposedly, H. metallipes   . The parameres are depicted as having a more pronounced enlargement of the medial margin than is present in the lectotype, or in all specimens of H. tarsalis   for which the male genitalia have been examined. Oliva (1992) did not give the locality data of the specimen that was used to make the drawing.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Hydrochidae

Genus

Hydrochus

Loc

Hydrochus metallipes Knisch

Perkins, Philip D. 2019
2019
Loc

Hydrochous metallipes

Knisch, A. 1920: 56
1920