Jacaena mihun 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 - 24), pp. 1539-1567 : 1551-1552

Jacaena mihun Deeleman-Reinhold, 2001

( Figures 1D , 2G , 3D , 4G–I , 6F , 7D , 8A–D , 10A–C )

Jacaena mihun Deeleman-Reinhold, 2001: 467 , figs 786–795, description of ♂ ♀.

Type material

Holotype: ♂, Thailand: Nakhon Ratchasima Province: Khao Yai NP, 1000 m, secondary forest, sifting leaf litter, 25 October 1985, P. Deeleman leg. ( RMNH, examined, Figures 4G–I , 10A–C ).

Paratype: One ♀, same data as holotype ( RMNH, examined) .

Other material examined

The following specimens were studied by Deeleman-Reinhold (2001) and included in the original description, but they were not designated as types: Thailand: Chiang Mai Province, Chiang Mai City, Mae Hia , deciduous forest and teak plantation, pitfall trap, 17–24 January 1988, 1♂ ( MHNG, examined). From locality as previous, 7–13 February 1988, 1♀ ( MHNG, examined). P.J. Schwendinger leg.

New material

Thailand: Sakon Nakhon Province: Phu Phan NP, 400 m, litter sample, 18 November 2007, P. Dankittipakul leg., 1♀ ( TNHM) . Loei Province: Phu Ruea NP, park headquarters, 850–8710 m, pan traps, 15–16 July 2007, P. Dankittipakul leg., 1♂ ( TNHM) . Khon Kaen Province: Phu Pha Man NP , in front of Tham (cave) Phiang Din , near the road Chumphae – Phu Kradung ( at km 122 ) c. 300 m, 24 July 2000, sieving in a mixed deciduous forest, det. C. Deeleman, P.J. Schwendinger leg., 1♂ ( MHNG, TH –00/03) . Sugarcane plantation near Phu Pha Man NP, 300 m, 15 June 2007, P. Dankittipakul leg., 1♂ ( TNHM) . Chiang Mai Province, Chiang Mai City, Mae Hia , 7–24 January 1988, det. C. Deeleman, P.J. Schwendinger leg., 1♂ ( MHNG, examined) .

Diagnosis

Males of J. mihun are very similar to those of J. thakek comb. nov. in having the strongly excavated apico-prolateral side of the tegulum ( Figures 4G cf. 5G), and the short conductor ( Figures 4H cf. 5H), but can be distinguished by the presence of a small triangular denticle on the dorsal surface of the conductor ( Figure 10A ). Females can be recognised by the tremendously lengthened insemination ducts strongly convoluted; spermathecae are indistinct ( Figure 8A–D ).

Distribution

Northern and north-eastern Thailand.

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 3. Jacaena spp. Prosoma and anterior part of opisthosoma showing epigastric scutum, ventral (A). Fovea, dorsal (B). Opisthosoma, ventral (C). Carapace, dorsal, showing ocular region (D). Carapace, frontal (E). Jacaena lunulata sp. nov., male, paratype (A–C, E); J. mihun, male, new material (D).

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 6. Jacaena spp. Male palps, ventral (A). Ditto, prolateral (B). Ditto, retrolateral (C). Internal copulatory organ, anterior part, dorsal (D). Ditto, showing proximal chamber and secretory ampulla (E). Internal copulatory organ (middle portion of insemination duct removed on right spermathecae, showing connection between copulatory orifice and insemination duct) (F). Jacaena lunulata sp. nov., holotype (A–C); J. peculiaris sp. nov., paratype (D); J. punctata sp. nov., paratype (E); J. mihun (F). AM, secretory ampulla. CH, semi-transparent chamber. CO, copulatory orifice. F, fertilisation duct.

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).

Figure 10. Jacaena mihun, holotype (A–C); J. thakek comb. nov., holotype (D–F). Male palp, ventral (A, D). Ditto, prolateral (B, E). Ditto, retrolateral (C, F).