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Staphylinoidea
Staphylinoidea is a superfamily of beetles. It is a very large and diverse group with worldwide distribution. Description Adult staphylinoids are generally small beetles no more than a few millimetres long, though Staphylinidae can reach 50 mm long and Silphidae can reach 45 mm. The superfamily includes the smallest beetles (and the smallest of all non-parasitic insects) in family Ptiliidae. Most Ptiliidae do not exceed 1 mm long as adults, while the smallest species is just 325 μm long. Adults can be recognised by the hind wings having no accessory posterior ridge (locking device), no medial loop, no wedge cell and no apical hinge. The 8th segment of the abdomen is not entirely invaginated within the 7th. The head usually lacks a coronal suture (rarely with a short, rudimentary suture). Larval staphylinoids have 3-segmented (rarely 4-segmented) maxillary palps with distinct (often fused) galia and lacinia. The body usually has well-developed tergites and sternites. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jacobsoniidae
Jacobsoniidae are a family of tiny beetles belonging to Staphylinoidea. The larvae and adults live under bark, in plant litter, fungi, bat guano and rotten wood. There are around 28 described species in three genera: Description Members of this family have a small body size (0.7-2.1mm in length). Their bodies are narrow, and are four times as long as they are wide. They are often a yellowish-brown in color. Ecology Members of the group have primarily been found in leaf litter or in rotting wood, but some has have also been found in fungal fruting bodies or bat guano. The biology of members of this group is essentially unknown. Taxonomy Their taxonomic position has long been controversial, originally they were placed in Dermestoidea, before being considered Polyphaga ''incertae sedis.'' They were later placed in the Staphylinoidea, which is supported by characters of the wing venation as well as the morphology of the larval galea of the maxillae. Distribution Members ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |