Gregarious-nymphs
Guides
Elasmostethus interstinctus
Birch Shield Bug
Elasmostethus interstinctus, commonly known as the birch shield bug, is a shield bug in the family Acanthosomatidae with a Holarctic distribution across Europe, Northern Asia, and North America. Adults measure 8–11.5 mm and display distinctive bright yellow-green and red coloration. The species is univoltine, with adults overwintering in leaf litter and emerging in spring to reproduce on birch and other host plants.
Largus
bordered plant bugs
Largus is a genus of true bugs in the family Largidae, commonly known as bordered plant bugs. Adults are relatively large (13–17 mm), predominantly black with orange marginal markings. Nymphs are strikingly colored metallic blue-black with a central red spot. The genus occurs across much of North America with greatest diversity in the southwestern United States. These insects are generalist herbivores that occasionally feed on carrion and fecal material.
Largus semipunctatus
bordered plant bug
Largus semipunctatus is a true bug in the family Largidae, commonly known as a bordered plant bug. The species was described by Halstead in 1970. Like other members of the genus Largus, it is characterized by dark coloration with orange or red marginal markings. The genus is most diverse in the southwestern United States, with nymphs displaying distinctive metallic blue-black coloration with a central red spot. Adults are flightless and overwinter, with females laying eggs in clusters on the ground.
Pachycoris
Pachycoris is a genus of shield-backed bugs (Scutelleridae) in the subfamily Pachycorinae, distributed across the Americas. Adults are recognized by large bright spots on the dorsal surface. Several species have been documented exhibiting maternal care of eggs and early-instar nymphs. The genus feeds primarily on plants in the family Euphorbiaceae.