Hydrochus variabilis 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: 162-164

publication ID

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

publication LSID

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

persistent identifier

http://treatment.plazi.org/id/C17B87FF-3C33-1239-C0E6-FD2FFD70F657

treatment provided by

Plazi

scientific name

Hydrochus variabilis Knisch
status

 

Hydrochus variabilis Knisch  

Figs. 11 View FIGURE 11 , 12C View FIGURES 12

Hydrochous variabilis Knisch 1921: 2   . The RBINS kindly provided fifteen syntypes of Hydrochus variabilis 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. 11 View FIGURE 11 , 12C View FIGURES 12 ). Lectotype labels ( Fig. 12C View FIGURES 12 ): “ Coll. R. I. Sc. N. B. Bras.Corumba [Matto Grosso] // Kniž det. variabilis // Coll. A.Knisch COTYPUS // Ex Coll. et det. A.d’Orchymont: R.M.H.N.B. 15.962 // Hydrochus variabilis Knisch   det. J.L.Hellman // Paralectotype // HABITUS/GENIT. DIGITAL IMAGES captured 2019 P.D. Perkins // [red] LECTOTYPE Hydrochus variabilis Knisch   desig. P. D. Perkins. ” The fourteen non-lectotype syntypes have been labeled paralectotypes.

Remarks. The male genitalia of the lectotype appears to have a very large gonopore; this is, based on other specimens of this species examined, because the male genitalia had dried out, and the membranous area surrounding the gonopore had consequently retracted toward the lateral margins. Images of a specimen of H. variabilis   with the gonopore of usual size is given in Perkins (in press).

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Hydrochidae

Genus

Hydrochus

Loc

Hydrochus variabilis Knisch

Perkins, Philip D. 2019
2019
Loc

Hydrochous variabilis

Knisch, A. 1921: 2
1921