Cteniogaster sangarawe, Jan Bosselaers & Rudy Jocque, 2013

Jan Bosselaers & Rudy Jocque, 2013, Studies in Liocranidae (Araneae): a new afrotropical genus featuring a synapomorphy for the Cybaeodinae, European Journal of Taxonomy 40, pp. 1-49 : 23-24

Cteniogaster sangarawe sp. nov.

urn:lsid:zoobank.org:act:B3900F5F-6616-4A1B-8698-BC1F20748842

Figs 3A-B , 5C-D, 12F-G, 14; Appendix 1K

Diagnosis

Cteniogaster sangarawe sp. nov. is close to C. conviva sp. nov. but differs from it and from all other Cteniogaster gen. nov. species by the epigyne with a thick and sclerotised, wide anterior hood, and the vulva with median, longitudinally oriented ST2 that are slightly separated from each other.

Etymology

The species name is a noun in apposition and refers to Sangarawe Forest, the type locality in the East Usambara mountains.

Type material

Holotype

♀: TANZANIA, E. Usambara Mts., Amani, Sangarawe Forest , 5°6.5’S 38°35.7’E, 5-6 Nov. 1995, 990 m asl, sifting litter, Griswold C., Scharff N. & Ubick D. ( ZMUC) .

Paratypes

1 ♀, 1 juv: TANZANIA, E. Usambara Mts., Amani, Sangarawe Forest , 5°5.7’S 38°38’E, 28 Oct.-9 Nov. 1995, 950 m asl, pitfalls, Griswold C., Scharff N. & Ubick D. ( ZMUC) ; 2 ♀♀: same data as previous ( ZMUC) .

Description

Male

Unknown.

Female (holotype)

TOTAL LENGTH. 2.24. Carapace length 1.05, width 0.79, yellow brown, somewhat iridescent, unbordered ( Fig. 3B ). Fovea pronounced, length 0.13, anterior end 0.68 from front end of carapace. MOQ length 0.08, anterior width 0.07, posterior width 0.08. AER width 0.21, PER width 0.26. AME small, 1/4-1/3 of ALE diameter. Lateral eyes touching, AME 1.5 times diameter of PLE. PME very small and reduced, diameter 1/3 of AME diameter. Both eye rows straight from above. Clypeus vertical, equal to 1.5 times the diameter of AME. Chilum orange brown, sclerotised. Sternum yellow, length 0.63, width 0.58. PCT very weak, subtriangular.

ABDOMEN. Pale yellowish grey dorsally ( Fig. 3B ). ALS separated by half their diameter, PLS conical, separated by their length. Legs yellow. Retrocoxal hymen small but pronounced, subglobular, hyaline. Trochanter notch present but not very pronounced. Sparse ve terminal preening brushes on mt III and IV. Tarsus IV slightly bent. Leg spination as in Appendix 1K.

LEG MEASUREMENTS: Epigyne. with thick and sclerotised, wide anterior hood, partly transparent, showing median ST2 and widely separated posterior globular ST1, slightly variable ( Fig. 12F-G). Vulva with widely separated spherical posterior ST1 with internal spikes and median, longitudinally oriented and slightly separated ST2 with an anterior, porous glandular structure ( Fig. 5C-D ).

	fe	pa	ti	mt	ta	Total
I	0.76	0.39	0.55	0.39	0.42	2.52
II	0.68	0.32	0.50	0.34	0.42	2.26
III	0.55	0.24	0.34	0.34	0.45	1.92
IV	0.79	0.32	0.66	0.68	0.60	3.05

Distribution

Tanzania, East Usambara mountains, 950-990 m asl.

Figures

Fig. 3. A-B. Cteniogaster sangarawe sp. nov. A. ♀, habitus, ventral view. B. Idem, dorsal view. C-D. Cteniogaster taxorchis sp. nov. C. ♀, prosoma, dorsal view. D. Idem, ventral view. E-G. Cteniogaster nana sp. nov. E. Ƌ, habitus, ventral view. F. Idem, abdomen, ventral view. G. Idem, habitus, dorsal view. H-J. Cteniogaster lampropus sp. nov. H. ♀, prosoma, dorsal view. I. Idem, habitus, dorsal view. J. Idem, ventral view. Scale bars: A-D, F-J = 0.5 mm; E = 0.2 mm.

Fig. 5. Female genitalia, dorsal view. A, C, E: cleared in methyl salicylate. A-B. Cteniogaster conviva sp. nov. C-D. Cteniogaster sangarawe sp. nov. E-F. Cteniogaster taxorchis sp. nov. Scale bars = 0.1 mm.