Male-genitalia-required-for-identification

Guides

• Liodessus noviaffinis

  Liodessus noviaffinis is a small predaceous diving beetle described in 1998 from Florida. It belongs to the L. affinis species complex, a group of four closely related North American species that are difficult to distinguish based on external morphology. The species is known from the eastern United States and Canada, with records from New Brunswick and Nova Scotia. Male genitalia provide the only reliable means of identification.

  predaceous-diving-beetleDytiscidaeLiodessus-affinis-complexmale-genitalia-required-for-identificationcryptic-speciesNearcticaquatic-beetle

• Psallus

  Psallus is a genus of plant bugs in the family Miridae, subfamily Phylinae, comprising over 160 described species. The genus is predominantly Palearctic in distribution, with some species demonstrating Holarctic ranges and several having been introduced to the Nearctic region. Species are generally small, often measuring under 4 mm, with many exhibiting reddish or orange coloration. Host plant associations have been documented for several species, primarily with woody plants including oaks (Quercus), willows (Salix), and birch (Betula).

  MiridaePhylinaeplant-bugsHemipteraPalearcticHolarcticAnatoliaoak-associatedsmall-sizemale-genitalia-required-for-identification