Belongs within: Pselaphitae. Pselaphus is a cosmopolitan genus of pselaphines bearing long maxillary palps with the terminal segment clubbed at the end (Raffray 1904a). Characters (from Raffray 1904a): Head ventrally gibbous behind mentum. Maxillary palps very long, simple; second segment very long, slender, briefly swollen at tip; third segment small, more or less globular; fourth… Continue reading Pselaphus


Belongs within: Staphylinidae.Contains: Natypleurina, Sunorfa, Proterini, Arnylliini, Goniacerini, Plagiophorus, Bolbobythus, Tychus, Sagola, Faronus, Sonoma, Bythinoplectitae, Achillia, Bryaxina, Decarthron, Pselaptus, Scalenarthrus, Reichenbachia, Eupines, Rybaxis, Batraxis, Brachygluta, Bryaxis, Euplectitae, Pselaphitae. The Pselaphinae are a cosmopolitan group of small, often grotesque-looking staphylinid beetles with a robust, relatively inflexible body (Newton et al. 2001). Members include the Clavigeritae, specialised beetles… Continue reading Pselaphinae


Belongs within: Euplectitae. On Raffrayia Published 31 January 2020 In previous posts, I have introduced you to various representatives of the Pselaphinae, bizarre-looking little gorgon-headed beetles dwelling in soil. But as with all elements of the world’s biodiversity, I have not even begun to scratch the surface of what this group has to offer. So… Continue reading Raffrayia


Belongs within: Pselaphinae. On Sunorfa Published 31 August 2016 When I began researching the taxon that was to be the subject of this post, I was surprised to discover that it had weaseled its way onto this site once before. Back in the day, I used an example of the beetle genus Sunorfa to illustrate… Continue reading Sunorfa


Belongs within: Pselaphinae. The little tyke that is Tychus Published 15 December 2014 Another brief beetle post for today. The species in the image above is the type species of Tychus, a genus of about 150 species of pselaphine beetles found in Eurasia and North America. Chandler (1988) regarded the North American species as a… Continue reading Tychus


Belongs within: Pselaphinae. Bryaxis on the prowl Published 7 December 2012 Bryaxis is a large genus, with over 400 described species and subspecies (Hlaváč 2008), of small beetles belonging to the group known as the Pselaphinae, a subgroup of the Staphylinidae. In older references, you’ll see the pselaphines referred to as a separate family Pselaphidae… Continue reading Bryaxis


Belongs within: Pselaphinae. Reichenbachia is a large cosmopolitan genus of pselaphine beetles, including over 300 species. Characters (from Park 1942): Ventral surface of head with median longitudinal carina or carinoid swelling; antennae eleven-segmented; maxillary palpi four-segmented; epistomal region generally simple, sometimes slightly expanded laterally or vertically elevated; pronotum with disc simple, evenly convex, three subbasal… Continue reading Reichenbachia


Belongs within: Pselaphinae.Contains: Tmesiphorus, Pseudophanias, Stipesa, Arhytodini, Pselaphus, Tyraphus, Curculionellus, Clavigeritae, Ctenistes, Ctenisophus, Enoptostomus, Sognorus, Tyromorphus, Centrophthalmina, Tyrina, Hamotus. The Pselaphitae are a large group of beetles that usually have eleven-segmented antennae and greatly developed maxillary palpi (Richards & Davies 1977). <==Pselaphitae [Macroscelidae] |–+–+–ArhytodiniLC20 | | `–+–Rhytus Westwood 1870LC20, R04b | | `–+–PselaphogeniusLC20 | |… Continue reading Pselaphitae


Belongs within: Pselaphinae. The Natypleurina are a group of pselaphine beetles found in Asia and Australia. They are distinguished by the possession of short maxillary palpi with a symmetrical or subconical fourth segment, and elytra lacking subhumeral foveae (Arai & Nomura 2007). <==Natypleurina [Tanypleurini]NG05 |–NipponobythusNG05 |–TakaoritesNG05 |–Morana Sharp 1874NG05, R04 | `–M. discedens Sharp 1874R04… Continue reading Natypleurina