Nusatidia Deeleman-Reinhold, 2001

Zhang, Jianshuang, Yu, Hao & Li, Shuqiang, 2021, On the clubionid spiders (Araneae, Clubionidae) from Xishuangbanna, China, with descriptions of two new genera and seven new species, ZooKeys 1062, pp. 73-122 : 73

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.

Figures

Figure 2. Malamatidia zu, epigyne (A-D), male habitus (E, F) and female habitus (G, H) A intact, ventral view B cleared, ventral view C cleared, dorsal view D cleared, dorsal view E dorsal view F lateral view G dorsal view H ventral view. Abbreviations: BS = bursa; CD = copulatory duct; CO = copulatory opening; FD = fertilization duct; SP = spermatheca. Scale bars: 0.10 mm (equal for A-D); 1 mm (equal for E, F, equal for G, H).

Figure 4. Matidia spatulata, epigyne (A-D), male habitus (E, F) and female habitus (G, H) A intact, ventral view B cleared, ventral view C cleared, dorsal view D cleared, dorsal view; path of copulatory duct marked E dorsal view F lateral view G dorsal view H ventral view. Arrow (F) point at dark ventral abdominal spot in male. Abbreviations: BS = bursa; CD = copulatory duct (dashed line showing schematic course of copulatory duct, dorsal); CO = copulatory opening; FD = fertilization duct; SP = spermatheca. Scale bars: 0.10 mm (equal for A-D); 2 mm (equal for E, F, equal for G, H).

Figure 6. Matidia xieqian sp. nov., female paratype and male holotype, epigyne (A-D), male habitus (E, F) and female habitus (G, H) A intact, ventral view B cleared, ventral view C cleared, dorsal view D cleared, dorsal view; path of copulatory duct marked E dorsal view F lateral view G dorsal view H ventral view. Abbreviations: A = epigynal atrium; BS = bursa; CD = copulatory duct (dashed line showing schematic course of copulatory duct, dorsal); CO = copulatory opening; FD = fertilization duct; SP = spermatheca. Scale bars: 0.20 mm (equal for A-D); 1 mm (equal for E, F, equal for G, H).

Figure 7. Male palp of Nusatidia aeria A prolateral view B retrolateral view C bulb, prolateral view D bulb, ventral view E bulb, retrolateral view. Abbreviations: E = embolus; EB = embolic base; RTA = retrolateral tibial apophysis; TA = tegular apophysis. Scale bars: 0.10 mm (equal for A, B, equal for C-E).

Figure 8. Nusatidia aeria, epigyne (A-D), male habitus (E, F) and female habitus (G, H) A intact, ventral view B cleared, ventral view C cleared, dorsal view D cleared, dorsal view E dorsal view F lateral view G dorsal view H ventral view. Abbreviations: CD = copulatory duct; CO = copulatory opening; EPP = epigynal posterior plate; SP = spermatheca. Scale bars: 0.10 mm (equal for A-D); 1 mm (equal for E, F, equal for G, H).

Figure 9. Male palp of Nusatidia camouflata A prolateral view B retrolateral view C bulb, prolateral view D bulb, ventral view E bulb, retrolateral view. Abbreviations: E = embolus; EB = embolic base; RTA = retrolateral tibial apophysis. Scale bars: 0.10 mm (equal for A, B, equal for C-E).

Figure 10. Male habitus of Nusatidia camouflata A dorsal view B ventral view C lateral view. Dotted box (B) showing rectangular projection in front of coxae I. Scale bars: 1 mm (equal for A-C).

Figure 11. Male palp of the holotype of Nusatidia changao sp. nov., left palp (A, B) and flipped right bulb (C-E) A prolateral view B retrolateral view C bulb, prolateral view D bulb, ventral view E bulb, retrolateral view. Abbreviations: C = conductor; E = embolus; EB = embolic base; RTA = retrolateral tibial apophysis. Scale bars: 0.10 mm (equal for A, B, equal for C-E).

Figure 12. Nusatidia changao sp. nov., female paratype and male holotype, epigyne (A-D), male habitus (E, F) and female habitus (G, H) A intact, ventral view B cleared, ventral view C cleared, dorsal view D cleared, dorsal view; path of copulatory duct marked E dorsal view F lateral view G dorsal view H ventral view. Abbreviations: BS = bursa; CD = copulatory duct (dashed line showing schematic course of copulatory duct, dorsal); CO = copulatory opening; FD = fertilization duct; SP = spermatheca. Scale bars: 0.10 mm (equal for A-D); 1 mm (equal for E, F, equal for G, H).

Figure 13. Holotype female of Nusatidia mianju sp. nov., epigyne (A-E) and habitus (F, G) A intact, ventral view B cleared, ventral view C cleared, ventral view D cleared, dorsal view E cleared, dorsal view F dorsal view G ventral view. Abbreviations: BS = bursa; CD = copulatory duct; CO = copulatory opening; FD = fertilization duct; SP = spermatheca. Scale bars: 0.10 mm (equal for A-E); 1 mm (equal for F, G).

Figure 14. Holotype female of Nusatidia subjavana sp. nov., epigyne (A-E) and habitus (F, G) A intact, ventral view B cleared, ventral view C cleared, ventral view; path of copulatory duct marked D cleared, dorsal view E cleared, dorsal view F dorsal view G ventral view. Abbreviations: BS = bursa; CD = copulatory duct (dashed line showing schematic course of copulatory duct, ventral); CO = copulatory opening; FD = fertilization duct; SP = spermatheca. Scale bars: 0.10 mm (equal for A-E); 1 mm (equal for F, G).