Belongs within: Sclerosomatidae. Psathyropus is a genus of harvestmen from southern Asia, characterised (indistinctly) by the presence of two pseudoarticular nodules in femur II. Tenuous legs and tenuous connections In past postings on this site, I’ve expounded at length on the taxonomic nightmares associated with the harvestman family Sclerosomatidae. High diversity combined with systems based… Continue reading Psathyropus


Belongs within: Palpatores.Contains: Platybunus, Opilio, Egaenus, Homolophus, Odiellus, Gyinae, Phalangium, Rhampsinitus, Dasylobus, Zachaeus, Metaphalangium, Cristina, Rilaena, Metaplatybunus. The Phalangiidae is a diverse group of long-legged harvestmen found in Eurasia, North America and Africa (with some species introduced to Australasia). Members of this group are mostly leathery-bodied, with spiny legs and a characteristic penis morphology with… Continue reading Phalangiidae


Belongs within: Phalangiidae. Rhampsinitus is a genus of long-legged harvestmen in southern Africa, the males of which often have enlarged chelicerae. They are characterised by a penis with the end of the shaft broadened to form a distinct ‘spoon’ at the base of the hatchet-shaped glans (Taylor 2017). The legacy of Rhampsinitus Published 7 August… Continue reading Rhampsinitus


Belongs within: Phalangiidae. Cristina is a genus of harvestmen in which the males usually have the first pair of legs more or less thickened and/or heavily denticulate. As currently recognised, the genus is most diverse in East Africa, with fewer species in western Central Africa and southern Arabia (Staręga 1984). Disco opilioni Published 31 October… Continue reading Cristina


Belongs within: Sclerosomatidae. Pseudogagrella: a harvestman torn Published 30 November 2019 The Sclerosomatidae are one of the most diverse of the currently recognised harvestmen families, and one of the most problematic when it comes to classification. In various earlier posts, I have noted the challenges that bedevil sclerosomatid systematics, many reflecting a historical focus on… Continue reading Pseudogagrella

Categorised as Palpatores


Belongs within: Phalangiidae. Zacheus is a genus of large-bodied phalangiid harvestmen found in the eastern Mediterranean and western Asia (Kurt et al. 2015). Historically, there has been confusion regarding the correct spelling of the genus name; Crawford (1992) provides reasoning for use of the spelling ‘Zachaeus‘. Characters (from Kurt et al. 2015): Body large, heavily… Continue reading Zachaeus


Belongs within: Ischyropsalidoidea. Ischyropsalis is a genus of harvestmen found in Europe, members of which have conspicuously enlarged chelicerae in both sexes. Members of this genus are specialist predators of snails, using their large chelicerae to break open the snail’s shell. Characters (from Schönhofer 2013): Palps long and thin, elongated to enable interaction with the… Continue reading Ischyropsalis

Categorised as Palpatores


Belongs within: Palpatores.Contains: Ischyropsalis. The Ischyropsalidoidea are a clade of harvestmen found in the Holarctic region, members of which have an unsegmented ovipositor in females, and a penis with a single muscle in males (Shultz 1998). <==Ischyropsalidoidea [Ischropsalidae, Ischyropsalidae, Ischyropsalidoidae] | i. s.: Piankhi Dunlop, Bartel & Mitov 2012DBM12 | `–*P. steineri Dunlop, Bartel &… Continue reading Ischyropsalidoidea

Categorised as Palpatores


Belongs within: Palpatores.Contains: Nemastomatidae, Trogulidae. The Troguloidea is a clade of harvestmen found in Holarctic region, primarily characterised by features of the genitalia. Members of this clade possess two muscles in the penis, and aciniform vaginal glands and outer circular muscles in the ovipositor (Giribet & Kury 2007). <==Troguloidea [Eupagosterni, Troguloidae] | i. s.: Eotrogulus… Continue reading Troguloidea

Categorised as Palpatores


Belongs within: Opiliones.Contains: Phalangiidae, Sclerosomatidae, Neopilionidae, Metopilio, Ischyropsalidoidea, Troguloidea. The Palpatores, the long-legged harvestmen, are a diverse group of harvestmen including many of the most familiar members of the order. Members of this clade have ozopores flush with the body surface (not raised on ozophores) and simple, single claws on the legs; most (but not… Continue reading Palpatores