Belongs within: Carabidae.Contains: Trechodini, Tasmanorites, Geocharis, Patrobini, Scaritinae, Trechinae, Brachininae, Harpalinae, Amblytelus, Mecyclothorax, Broscinae, Elaphrinae. The Conjunctae are a major clade of carabid ground beetles distinguished primarily by the presence of conjunct mesocoxae, with the coxal cavities surrounded by the mesosternum and metasternum. Members of this clade include the large subfamilies Harpalinae and Trechinae, though… Continue reading Conjunctae


Belongs within: Coleopterida.Contains: Adephaga, Archostemata, Myxophaga, Scirtoidea, Staphylinoidea, Hydrophiloidea, Scarabaeoidea, Elateriformia, Bostrichoidea, Coccinelloidea, Tenebrionoidea, Cleroidea, Cucujoidea, Phytophaga. The Coleoptera, beetles, are one of the most diverse groups of insects with over 300,000 species. The earliest beetles were probably inhabitants of subcortical and interstitial spaces in wood (Kirejtshuk & Nel 2013) but they have since diversified… Continue reading Coleoptera


Belongs within: Conjunctae.Contains: Trechini, Bembidiini, Merizodinae. The Trechinae are small to medium-sized carabid beetles with a single seta in the mandibular scrobe. Among the tribes of this subfamily, the Pogonini have broad, shallow frontal grooves that do not extend as far as the posterior margin of the eyes, and a single seta on the dorsal… Continue reading Trechinae

Categorised as Trechinae


Belongs within: Lebiini. Demetrida is a genus of Australasian ground beetles characterised by dorsally pubescent tarsi with long lobes on the fourth segment and several long teeth on the tarsal claw, and a joined, rounded-truncate ligula and paraglossae. The large southeastern Australian species D. grandis and D. vittata have yellow elytra longitudinally striped with black… Continue reading Demetrida


Belongs within: Coleoptera. The Myxophaga are a group of small, algae-feeding, aquatic or semi-aquatic beetles. Adults respire via a plastron of air trapped by a dense pile of hydrophobic hairs, and contain the wings beneath the elytra by a rolling mechanism. Larvae, where known, possess tracheal gills and pupate within the last larval exuvium. The… Continue reading Myxophaga

Categorised as Myxophaga


Belongs within: Coleoptera. The Archostemata are a distinctive group of wood-boring beetles with the labrum fused to the head capsule in adults, and a distinctive wing-tucking mechanism where the wing tips are rolled rather than folded under the elytra (Grimaldi & Engel 2005). The most widespread family in the modern fauna is the Cupedidae, members… Continue reading Archostemata


Belongs within: Larrini. Larropsis: letting your prey do the work for you Published 12 June 2024 Keen-eyed wanderers in sandier regions of North America may observe wasps of the family Crabronidae going about their business, visiting flowers and hunting prey with which to stock their nests. Among the members of this family unique to this… Continue reading Larropsis


Belongs within: Staphylinoidea.Contains: Acrotrichinae. The Ptiliidae, featherwing beetles, are a group of very small beetles with narrow hindwings bearing long marginal hairs, believed to be adapted for passive flotation. Historically, forms with elytra more or less complete have been recognised as the subfamily Ptiliinae, but phylogenetic analysis resolves such a grouping as non-monophyletic. Ant-associated species… Continue reading Ptiliidae

Categorised as Ptiliidae


Belongs within: Meloinae. American hitch-hikers Published 11 June 2024 One of the major sticking points in the classification of the Meloidae, the blister beetles, has been the question of what to make of the Tetraonycini. This distinctive assemblage of blister beetles is unique to the Americas, and exhibits a number of features that stand out… Continue reading Tetraonycini


Belongs within: Staphylinidae. The Scaphidiinae are a group of rove beetles with a convex body form and long elytra covering most of the abdomen. As far as is known, all species are mycophagous (Newton et al. 2001). Characters (from Newton et al. 2001): Body form broadly oval, compact, very convex and shiny, with long slender… Continue reading Scaphidiinae