Microcina edgewoodensis, copyright Friends of Edgewood. Belongs within: Laniatores. Contains: Sandokanidae, Epedanoidea, Assamioidea, Zalmoxoidea, Samooidea, Gonyleptoidea, Calicina, Sitalcina, Banksula, Texella. The Grassatores are a clade of laniatorean harvestmen in which the penis lacks intrinsic muscles, with the glans expanding through hydraulic pressure alone. Grassatores [Camptonoti] SG14     |–+–Sandokanidae SG11     |  `–+–Epedanoidea SG14     |     `–+–+–Assamioidea SG14     |        |  `–+–Zalmoxoidea SG11… Continue reading Grassatores


Dorsum of Trionyxella granulata, from Roewer (1935). Belongs within: Assamiidae. The Trionyxellinae are a group of harvestmen found in southern Africa and Asia, characterised by the presence of a pseudonychium between the true claws. Characters (from Roewer 1935): Anterior margin of the carapace unarmed medially; spiracles concealed by chitinous projections; femur of pedipalp with short… Continue reading Trionyxellinae


Dorsum and male genitalia of Dampetrus granulatus, from Forster (1955). Belongs within: Assamiidae. The Dampetrinae are a group of assamiid harvestmen found in south-east Asia and Australia (Roewer 1935). Characters (from Roewer 1935): Frontal margin of carapace unarmed, without median denticle. Palpal femur with ventral spines shorter than diameter of femur. Stigmata hidden by row… Continue reading Dampetrinae


Dorsal view of Paraselenca marginata, from Roewer (1935). Belongs within: Assamiidae. The Selencinae are a group of assamiid harvestmen found in Africa with distitarsus I two-segmented, metatarsus II undivided and pectinate claws on tarsi III and IV (Santos & Prieto 2010). <==Selencinae [Eupodaucheniinae] SP10 |–Selenca Sørensen 1896 SP10 |    `–*S. maculata Sørensen 1896 S92 |–Selencula Roewer… Continue reading Selencinae


Stygnopsis robusta, from here. Belongs within: Grassatores. The Stygnopsidae are a group of harvestmen found in Mexico and Central America characterised by male genitalia with an internal capsule forming a follis on the ventral side in dorsal view of the pars distalis, with a few distal espiniform projections and with several setae on the pars… Continue reading Stygnopsidae


Significant features of Ereca maculata, from Lawrence (1962). Belongs within: Assamiidae. Ereca is a genus of assamiid harvestmen found in central Africa. Characters (from Lawrence 1962): Scute and free tergites unarmed; pedipalp femur with short ventral teeth; stigmata hidden beneath coxa IV; tarsal formula 4–5(2):7–8(2):5:5–6. <==Ereca Sørensen 1910 S92 |–*E. undulata Sørensen 1910 S92 |–E.… Continue reading Ereca


Avima matintaperera, copyright Gonzalo Giribet. Belongs within: Agoristenidae. Avima is a genus of agoristenid harvestmen lacking spines on the dorsal scutum (Pinto-da-Rocha 1996). Characters (from Pinto-da-Rocha 1996, as Trinella): Area I without median groove, rarely vestigial. Areas I–IV with or without paramedian small tubercles. Free tergites with small tubercles or smooth. Chelicera with segment II… Continue reading Avima


Paravima sp., copyright O. Villarreal M.. Belongs within: Grassatores. Contains: Avima. The Agoristenidae are a group of harvestmen found in northern South America and islands of the Caribbean (Pinto-da-Rocha & Kury 2007). Characters (from Pinto-da-Rocha & Kury 2007): Body length around 2–5 mm. Ocularium close to anterior border; four areas on dorsal scutum, often effaced;… Continue reading Agoristenidae


Phareicranaus sp., copyright Pavel Kirillov. Belongs within: Cranaidae. Phareicranaus is a genus of large harvestmen found primarily in north-western South America from Ecuador to Panama (Kury 2003). Characters (from Pinto-da-Rocha & Kury 2003): Penis with ventral plate deeply cleft in distal border; with four groups of setae. Glans with dorsal process. Stylus smooth, slightly curved,… Continue reading Phareicranaus


Dorsal view and pedipalp of Neocranaus albiconspersus, from Roewer (1923). Belongs within: Grassatores. Contains: Phareicranaus, Santinezia, Holocranaus, Cranaus. The Cranaidae are a group of harvestmen found primarily in northern South America, usually with a dense covering of dorsal tubercles on the pedipalps. Many genera in this family remain poorly defined and in need of revision.… Continue reading Cranaidae