Hydrochus pumilio 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 : 157

Hydrochus pumilio Knisch

Figs. 7 , 13B

Hydrochous pumilio Knisch 1920: 59 . The RBINS kindly provided three syntypes of Hydrochus pumilio Knisch , which are part of the Orchymont/Knisch types collection. The syntypes are conspecific males. Two of the males had been skillfully dissected by a prior worker, who removed the abdomen of each. The genital segments were in the abdomen, but mysteriously not the male genitalia, which were not otherwise with the specimens. Pol Limbourg (RBINS) very kindly did a very careful search for microslide mounts with the missing male genitalia, but was unable to find any. The third male, nonskillfully dissected by a prior worker, is in four pieces, but did have the male genitalia with the specimen. One of the complete, good male specimens was selected to serve as lectotype, and has been so labeled, and habitus and label images provided herein ( Figs. 7 , 13B ). The male genitalia figured is from the fragmentary paralectotype; the male genitalia from this paralectotype is in a glass microvial attached to the pin of the lectotype. The non-lectotype syntypes have been labeled paralectotypes. Lectotype labels ( Fig. 13B ): “[male symbol] // Paraguay Dr. Drake 188 // Coll. Kraatz // det. Kniž Hydrochous pumilio det. Kniž n. sp. Type // coll. A. Kniž TYPUS // TYPE // HABITUS/ GENIT. DIGITAL IMAGES captured 2019 P.D. Perkins // [red] LECTOTYPE Hydrochus pumilio Knisch desig. P. D. Perkins. ”

Figures

FIGURE 7. Hydrochus pumilio Knisch, habitus of lectotype, and male genitalia of paralectotype.

FIGURES 13A–E. Labels of lectotypes and neotype. (A) Hydrochus metallipes Knisch; (B) Hydrochus pumilio Knisch; (C) Hydrochus purpureus Knisch; (D) Hydrochus tarsalis Chevrolat; (E) Hydrochus secretus Knisch.