Account
What the sources say about this taxon, as written.
discussion · 
Plazi
Remarks Menge (1868) described this genus based on the elongated palpal tibia, the spiral embolus, the ventral radical tailpiece, the posteriorly separated ventral plate of the epigyne and a few other less conspicuous characters. A more detailed description of Dicymbium is given in Song et al. (2006) . We included three out of the ten species in our analysis (see Table 3 ). Dicymbium emerged as monophyletic in all analyses.
diagnosis · Plazi
Diagnosis Diagnostic characters for males are: the spiral embolus in a sagittal plane, very typical in all species of Dicymbium (character 108; Fig. 5D ); the highly elongated palpal patella (character 3); the hook-like distal part of the prolateral tibial apophysis ( Fig. 1C ) and the distinct lobe-like retrolateral process on the paracymbium (character 62; Fig. 4C ). The females are recognisable by the lip-like bisection margins (character 183; Fig. 10E–G ); the fertilization ducts with a spiral ending; the long oblong spermathecae separated by a slit around the middle and the typical separated conformation of the ventral and dorsal plate of the epigyne seen in aboral view (character 189; Fig. 10F ). Synapomorphies Dicymbium is well supported (node 29), with a Bremer support of 10, a jackknife support of 99 (MP analysis; Fig. 26 ) and a bootstrap of 100 (ML analysis; Fig. 27 ). It is supported by the following synapomorphies ( Fig. 29 ): the massive, thin to leaf-like inner suprategular apophysis with a longitudinal backing (character 85, state 7) and the lip-like bisection margins of the epigyne (character 183). Due to fast optimisation (ACCTRAN), the latter state is shown already one step before, at node 27, including Saloca , for which this character is inapplicable. Additionally, this genus is supported by several homoplastic characters among which are: the male palpal patella that is more than 3.5 times as long as broad (character 3, state 2); the macrosetae on the cymbial retrobasal thin apophysis (character 55); the distinct retrolateral process on the paracymbium (character 62) that is found a second time in node 23; the distinct lobe-like ventral process on the paracymbium (character 64, state 1) that is also found in node 37; the spiraled radical tailpiece (character 161, state 1); the separation between the dorsal and the ventral plate of the epigyne (character 189, state 1) and the scaly or ridged cheliceral stridulatory striae (character 218, states 0 and 1). Characters 64 and 189 also appear one step before, at node 27, including Saloca for which these characters are inapplicable.
description · Plazi
The genus Dicymbium is morphologically very homogeneous and the definition of the two species groups is based on the morphology of the male palpal tibia. However, Di. libidinosum is quite exceptional in its male genital characters. Therefore, the characters that support node 30 (i.e., the nigrum -group) are present also in many members of the facetum -group. Node 30 is unambiguously supported by the ventral internal tooth on the prolateral tibial apophysis (character 21) which is also found in, e.g., Di. yaginumai Eskov & Marusik, 1994 (Eskov & Marusik 1994: fig. 1), the mesal second pointy tip on the inner suprategular apophysis (character 86) and the whip-like distal suprategular apophysis (character 90). It is also ambiguously supported by the pointed outer suprategular apophysis that is also present in D. connatus and D. connatus jacksoni (character 83), the ridged cheliceral stridulatory striae (character 218) and the presence of a trichobothrium on metatarsus four (character 263) that are lacking in all other members of the Savignia -group (including Di. libidinosum ).