Soil-ecology
Guides
Geotrupidae
Earth-boring beetles, Earth-boring dung beetles, Dor beetles
Geotrupidae is a family of beetles in the order Coleoptera, commonly called earth-boring dung beetles or dor beetles. Adults excavate burrows in soil to lay eggs, typically provisioning nests with leaf litter (often moldy) rather than dung, though some species are coprophagous. The family contains over 600 species in about 30 genera across two subfamilies: Geotrupinae and Taurocerastinae. Formerly classified as a subfamily of Scarabaeidae, Geotrupidae was elevated to family status based on phylogenetic evidence. Some species communicate via stridulation, and burrows can exceed 2 meters in depth.
Tuberolachnus
giant willow aphid, giant bark aphid
Tuberolachnus is a genus of aphids in the family Aphididae, established by Mordvilko in 1909. The genus contains three described species, with Tuberolachnus salignus (the giant willow aphid) being the most well-known and widely studied. Members of this genus are among the largest aphids in the world, with body lengths reaching up to 5.8 mm. They are notable for their obligate parthenogenetic reproduction, extremely low genetic diversity, and status as invasive pests in multiple regions including New Zealand, India, and Patagonia.