Berosus
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Ordo: Coleoptera
Familia: Hydrophilidae
Name
Berosus Leach, 1817 – Wikispecies link – Pensoft Profile
Diagnosis
Adults are mostly medium-sized, elongate, and strongly convex. Coloration of the body is brown to yellowish-brown, with or without dark spots on the pronotum and elytra. The head is strongly flexed down, eyes are protuberant, and antennae have 7 antennomeres. The elytral apex is entire or produced into one or two spines. The mesoventral process is usually laminar. The male protarsi are widened and have four tarsomeres; those of females have five tarsomeres. The middle and hind tibiae and tarsi bear a fringe of long natatory setae. Abdominal ventrite 5 has a rectangular (or less frequently semicircular) emargination posteriorly.
Among Cuban hydrophilid genera, Berosus may be easily identified by large globular eyes, scutellum longer that wide and middle and hind tibiae and tarsi with well developed fringe of long natatory setae.
