Hydraena clystera

Perkins, Philip D., 2011, New records and description of fifty-four new species of aquatic beetles in the genus Hydraena Kugelann from South America (Coleoptera: Hydraenidae), Zootaxa 3074, pp. 1-198 : 48

Clystera Complex

Two species comprise the Clystera Complex: H. clystera , and H. d-concava. These are medium sized species (ca. 1.28–1.31 mm), which have a moderately sparsely punctate and shining dorsum, a subcordiform pronotum (with or without a dark fascia), and a diffuse, lightly colored elytral macula ( Figs. 91–92 ). The metaventrite has a deep, triangular impression. The aedeagus in this complex is very unusual: there is no distal piece, the gonopore being located at the sharply pointed end of the main piece ( Figs. 94–95). The currently known species are from Bolivia ( H. clystera ), and Peru (H. d-concava).

Figures

FIGURE 91. Hydraena clystera, holotype, dorsal and lateral habitus, and venter.

FIGURE 92. Hydraena d-concava, holotype, dorsal and lateral habitus, and venter.