Jacaena schwendingeri, Deeleman-Reinhold, 2001

Dankittipakul, Pakawin, Tavano, Maria & Singtripop, Tippawan, 2013, Revision of the spider genus Jacaena Thorell, 1897, with descriptions of four new species from Thailand (Araneae: Corinnidae), Journal of Natural History 47 (23), pp. 1539-1567 : 1553-1555

Jacaena schwendingeri (Deeleman-Reinhold, 2001) comb. nov. ( Figures 1 A, 2 A, 4 A–C, 7 A, 8 F, 9 A–C)

Sesieutes schwendingeri Deeleman-Reinhold, 2001: 461 , figs 771–774, description of ♂♀.

Type material

Holotype: ♂, Thailand, Chiang Mai Province, Chiang Dao District, Doi Chiang Dao Wildlife Sanctuary , 510 m, pitfall trap, 22 September–25 October 1990, P.J. Schwendinger leg. ( MHNG, examined, Figures 1 A, 4 A–C, 9 A–C) .

Paratype: From type locality, 450 m, 7 March 1987, P.J. Schwendinger leg., 1♀ ( MHNG, examined, Figures 2 A, 7 A, 8 F) .

Diagnosis

Males of J. schwendingeri comb. nov. can be recognised by the large and curved conductor that is divided into a heavily sclerotised outer margin and a semi-transparent inner membrane ( Figures 4 A, 9 A–C); the apex of conductor is gradually tapered and abruptly bent anteriorly ( Figures 4 C, 9 B). Females can be distinguished by the large copulatory orifices that are situated at the centre of the epigynal region ( Figure 7 A), and by the middle portion of the internal ducts, which are greatly enlarged, whereas the anterior part of the spermathecae is spherical ( Figure 8 F).

Distribution

Known only from the type locality in northern Thailand. Other specimens from different localities previously known ( Deeleman-Reinhold 2001: 461) were misplaced (see J. lunulata sp. nov. for more details).

Figures

Figure 1. Males of Jacaena spp., habitus, dorsal (A – H). Jacaena schwendingeri comb. nov., holotype (A); J. lunulata sp. nov., holotype (B); J. punctata sp. nov., holotype (C); J. mihun (D); J. erawan comb. nov. (E); J. thakek comb. nov., holotype (F); J. schwendingeri comb. nov. (G); J. lunulata sp. nov., paratype (H). DS, dorsal scutum.

Figure 2. Females of Jacaena spp., habitus, dorsal (A – H). Jacaena schwendingeri comb. nov., paratype (A); J. lunulata sp. nov., paratypes (B, C); J. angoonae sp. nov., holotype (D); J. punctata sp. nov., paratypes (E, F); J. mihun (G); J. peculiaris sp. nov., holotype (H).

Figure 4. Jacaena spp. Male palps, ventral (A, D, G). Ditto, prolateral (B, E, H). Ditto, retrolateral (C, F, I). Jacaena schwendingeri comb. nov., holotype (A – C); J. lunulata sp. nov., paratype (originally misidentified as Sesieutes schwendingeri) (D – F); J. mihun, holotype (G – I).

Figure 7. Jacaena spp. Epigynal region, ventral (A – F). Jacaena schwendingeri comb. nov., paratype (A); J. punctata sp. nov., paratype (B); J. lunulata sp. nov., paratype (C); J. mihun (D); J. angoonae sp. nov., holotype (E); J. peculiaris sp. nov., holotype (F).

Figure 8. Jacaena spp. Internal copulatory organ, dorsal (A – G). Jacaena mihun (A – D); J. angoonae sp. nov., holotype (E); J. schwendingeri comb. nov., paratype (F); J. lunulata sp. nov., paratype (G).