Genus Nusatidia Deeleman-Reinhold, 2001

Nusatidia Deeleman-Reinhold, 2001: 166.

Type species.

Matidia javana Simon, 1897 from Java, Krakatau.

Diagnosis.

Nusatidia is very similar to Malamatidia and Matidia by the pale, slender body (Figs 2E-H, 4E-H, 8E-H), but it can be recognised by the following somatic characters: sternum with a rectangular projection beyond coxae I (Fig. 10B) (vs. sternum unmodified in all other SE Asian clubionids, such as Malamatidia and Matidia (Figs 2H, 4H)); leg I shorter than legs II and IV (vs. leg I longest in Matidia); male abdomen ventrally without pigmented spot (Fig. 10B) (vs. abdomen with dark spot on venter in Matidia; Fig. 4F). In general, most Nusatidia species can be recognised by the male palp: threadlike embolus draped around tegulum, such as in N. camouflata (Fig. 9A-E) and N. changao (Fig. 11A-E), but not in N. luzonica (Simon, 1897) and N. aeria (Simon, 1897) (Fig. 7A-E). Despite the variable general shape of the epigyne, all Nusatidia species lack a central depression (Figs 12A, B, 13A-C, 14 A-C) (vs. epigynal plate with a central depression in Malamatidia (Fig. 2A, B) or with one or two depressions in Matidia (Figs 4A, B and 6A, B)).

Description.

See Deeleman-Reinhold (2001).

Comments.

The somatic characters of Nusatidia species strongly suggest a close relationship with Matidia . However, both genera are possibly paraphyletic (Versteirt et al. 2010). According to WSC (2021), only two described Nusatidia species were known from males: N. luzonica (Simon, 1897) and N. manipisea (Barrion & Litsinger, 1995), both from Luzon Island in the Philippines. We cannot rule out the possibility that these two species are conspecific to C. mianju sp. nov. and C. subjavana sp. nov.