Head-morphology
Guides
Obtusicranus
Obtusicranus is a genus of planthoppers in the family Delphacidae, subfamily Stenocraninae. It was established by Bartlett in 2006. Members of this genus are small, delicate insects characterized by their distinctive head structure with a blunt, rounded frons. The genus is part of the diverse Delphacidae family, which contains many economically important agricultural pests, though specific impacts of Obtusicranus species are not well documented.
Priacma serrata
Priacma bleach beetle
Priacma serrata is the sole extant species in the genus Priacma, a relict lineage of reticulated beetles in the family Cupedidae. Males are strongly attracted to the odor of bleach and other chlorine-based compounds, a unique behavioral trait that facilitates collection and study. The species exhibits pronounced sexual dimorphism, with females substantially larger than males and rarely encountered. Adult males possess non-functional digestive tracts and do not feed. Populations display episodic mass emergence events rather than continuous adult activity.