Notiocoelotes, Wang, Xin-Ping, Xu, Xiang & Li, Shuqiang, 2008

Wang, Xin-Ping, Xu, Xiang & Li, Shuqiang, 2008, Notiocoelotes, a new genus of the spider subfamily Coelotinae from Southeast Asia (Araneae, Amaurobiidae), Zootaxa 1853, pp. 1-17 : 3-4

Notiocoelotes gen. nov.

Type species. – Coelotes palinitropus Zhu and Wang 1994

Etymology: The generic name is a compound word with the Greek word “notio” and the generic name Coelotes . “Notio” means “southern”, referring to the southern distribution of this genus compared to other Coelotinae. Masculine in gender.

Diagnosis: Members of Notiocoelotes gen. nov. can be separated from other Coelotinae by the absence of epigynal teeth, the presence of a tongue-shaped atrial scape, and the large copulatory ducts in females, and by the absence of a patellar apophysis, the large, strongly bifurcated lateral tibial apophysis, the absence of a conductor dorsal apophysis, the strongly elongated, coiled conductor, and the reduced or simple median apophysis in males.

Description: Small to medium sized ecribellate spiders, total length 3.20–9.40. Somatic morphology is similar to other Coelotinae ( Figs 3 , 6 , 14–16 , 27–29 , 36–37 ). From dorsal view, anterior eye row slightly procurved, posterior row procurved; AME smallest, less than or approximately half the size of ALE; ALE, PLE, and PME subequal ( Figs 13 , 26 , 35 ); N. laosensis without AME ( Figs 4 , 7 ). Chilum divided, hairless. Chelicerae with 3 promarginal teeth and 2 retromarginal teeth ( N. sparus with 3 retromarginal teeth). Trichobothria, tarsal organ and spinnerets of N. vietnamensis sp. nov. were examined under SEM. Tibiae with about four rows of trichobothria; metatarsi and tarsi with one row of trichobothria; trichobothria with large hood transversely striated and small hoods smooth ( Figs 41–43 ). Tarsal organ with simple opening ( Fig. 42 ). Leg length and spination similar to other Coelotinae, except N. laosensis sp. nov. which has relatively longer and slender legs due to its cave life habitat. Trachea not examined. Colulus represented by two clusters of hairs, each with 3 hairs on the examined specimen; ALS short; PMS short, approximately 11 aciniform gland spigots, 2 cylindrical gland spigots, 1 minor ampullate gland spigot; PLS second segment long, with approximately 11–12 aciniform gland spigots, and 2 cylindrical gland spigots ( Figs 38–40 ).

Female epigynum simple, without teeth; atrium small, more or less elongated, reaching posteriorly epigastric furrow, with a tongue-shaped, posteriorly directed atrial scape; copulatory ducts broad, covering part of spermathecae and spermathecal heads from dorsal view; spermathecae with bases widely separated ( Figs 1–2 , 9–12 , 17–18 , 23–25 , 30–31 ). Male palpus without patellar apophysis; RTA long, extending along most of tibial length; cymbial furrow longer than half of cymbial length; without conductor dorsal apophysis; conductor long, coiling; median apophysis either simple or absent, not spoon-shaped; embolus filiform, relatively strong, proximal in origin, with distal part coiled ( Figs 19–22 , 32–34 ).

Natural history: Species of Notiocoelotes gen. nov. were collected by searching under tree bark, under stone and other objects, inside a cave entrance, sifting leaf litter and were collected from pitfall traps.

Composition: Five species: Notiocoelotes laosensis sp. nov. (Ψ), N. lingulatus sp. nov. (Ψ), N. palinitropus ( Zhu & Wang, 1994) comb. nov. (Ψɗ), N. sparus ( Dankittipakul, Chami-Kranon & Wang, 2005) comb. nov. (ɗ), and N. vietnamensis sp. nov. (Ψɗ).

Distribution: China (Hainan Island), Laos (Khammouan), Thailand (Nakhon Ratchasima), and Vietnam (Huong Son) ( Fig. 44 ).

Figures

FIGURE 44. Records of species of Notiocoelotes gen. nov.

FIGURES 3 – 4. Notiocoelotes laosensis sp. nov., holotype female from Khammouan, Laos. 3 Habitus, dorsal view; 4 Prosoma, fronto-dorsal view (Scale line is not available).

FIGURES 5 – 8. Notiocoelotes laosensis sp. nov., female paratype from Khammouan, Laos. 5 Opisthosoma, ventral view; 6 Habitus, dorsal view; 7 Eyes, fronto-dorsal view; 8 Vulva, dorsal view (Scale lines are not available).

FIGURES 14 – 16. Notiocoelotes lingulatus sp. nov., holotype female from Diaoluoshan Mt., Hainan, China, habitus (14 dorsal, 15 lateral, 16 ventral view).

FIGURES 25 – 29. Notiocoelotes palinitropus (Zhu & Wang, 1994), female from Dianyushan, Hainan, China. 25 Epigynum, ventral view; 26 Eyes, fronto-dorsal view; 27 – 29 Habitus (27 dorsal, 28 lateral, 29 ventral view).

FIGURES 35 – 37. Notiocoelotes vietnamensis sp. nov., holotype female (35 – 36) and male paratype (37) from Huong Son, Vietnam. 35 Eyes, fronto-dorsal view; 36 – 37 Habitus, dorsal view.

FIGURES 11 – 13. Notiocoelotes lingulatus sp. nov., holotype female from Diaoluoshan Mt., Hainan, China. 11 Epigynum, ventral view; 12 Vulva, dorsal view; 13 Eyes, fronto-dorsal view.

FIGURES 38 – 41. Notiocoelotes vietnamensis sp. nov., female paratype from Huong Son, Vietnam. 38 Colulus, representated by setae (indicated by arrows); 39 PMS; 40 PLS; 41 Tarsus of the fourth leg, showing position of tarsal organ and trichobothria. AC = aciniform gland spigots; CY = cylindrical gland spigots; mAP = minor ampullate gland spigot.

FIGURES 42 – 43. Notiocoelotes vietnamensis sp. nov., female paratype from Huong Son, Vietnam. 42 Tarsal organ (indicated by black arrow) and the third trichobothrium (indicated by white arrow, the hair itself is absent); 43 Trichobothrium, base, from the tarsus of the fourth leg.

FIGURES 1 – 2. Notiocoelotes laosensis sp. nov., holotype female from Khammouan, Laos. 1 Epigynum, ventral view; 2 Vulva, dorsal view.

FIGURES 9 – 10. Notiocoelotes lingulatus sp. nov., holotype female from Diaoluoshan Mt., Hainan, China. 9 Epigynum, ventral view; 10 Vulva, dorsal view.

FIGURES 17 – 20. Notiocoelotes palinitropus (Zhu & Wang, 1994), female (17 – 18) and male (19 – 20) from Jianfengling Nature Reserve, Hainan, China. 17 Epigynum, ventral view; 18 Vulva, dorsal view; 19 Left palp, retrolateral view; 20 Left palp, tibia, retrolateral view, showing the bifurcated LTA. A = atrium; AS = atrial scape; C = conductor; CD = copulatory duct; CF = cymbial furrow; E = embolus; EB = embolic base; FD = fertilization duct; S = spermathecae; SH = spermathecal head; LTA = lateral tibial apophysis; RTA = retrolateral tibial apophysis.

FIGURES 23 – 24. Notiocoelotes palinitropus (Zhu & Wang, 1994), female from Jianfengling Nature Reserve, Hainan, China. 23 Epigynum, ventral view; 24 Vulva, dorsal view.

FIGURES 30 – 34. Notiocoelotes vietnamensis sp. nov., holotype female (30 – 31) and male paratype (32 – 34) from Huong Son, Vietnam. 30 Epigynum, ventral view; 31 Vulva, dorsal view; 32 – 34 Left palpus (32 prolateral, 33 ventral, 34 retrolateral view).