Three new genera of tracheline sac spiders from southern Africa (Araneae: Corinnidae) Author Haddad, Charles R. Department of Zoology & Entomology, University of the Free State, P. O. Box 339, Bloemfontein, 9300 South Africa haddadcr.sci@ufs.ac.za Author Lyle, Robin text African Invertebrates 2008 2008-12-31 49 2 37 37 http://www.bioone.org/doi/abs/10.5733/afin.049.0204 journal article 10.5733/afin.049.0204 2305-2562 7661475 Genus Fuchiba gen. n. Etymology: The genus name is an arbitrary combination of letters. Gender masculine. Type species: Fuchiba aquilonia sp. n. Diagnosis: Separated from other trachelines by the robust body, lack of any cusps or spines on legs, widely spaced eyes, high and finely granulate carapace with a shallow depression immediately anterior to the fovea, and by the genitalic structures: males have a short coiled embolus distally on the tegulum and a simple single RTA; females have copulatory openings situated laterally in sclerotised posterior circular depressions. Description: Small spiders, 2.43–4.70 mm long; carapace yellow-brown, orange, redbrown or dark brown, abdomen pale grey with dark grey dorsal chevron marking ( Figs 1–3 , 5–14 ); carapace surface finely granulate ( Figs 15, 16 ); AER procurved, clypeus height larger than AME diameter; AME slightly smaller than ALE, or eyes subequal; AME closer to ALE than to each other; PER strongly recurved ( Fig. 16 ); PME slightly larger than PLE, or eyes subequal; PME closer to each other than to PLE; chilum single, triangular, tapering distally, sometimes with distal notch; cheliceral promargin and retromargin with three teeth each, retromarginal teeth often on single base, otherwise close together ( Fig. 17 ); labium trapezoidal; endites straight laterally with distinct serrula ( Fig. 18 ), anterolateral spur present in male F. montana sp. n. and F. venteri sp. n. ; carapace broadly oval, widest at midpoint, eye region wide; carapace with slight depression anterior to fovea, posterior margin slightly concave; pleural bars isolated; sternum shield-shaped; precoxal triangles present; intercoxal sclerites present between coxae I and II, II and III, and III and IV; legs I and II more strongly built than legs III and IV; legs without spines or ventral cusps, metatarsi and tarsi scopulate ( Figs 19, 20 ), with paired tarsal claws and weakly developed claw tufts ( Fig. 21 ); metatarsi III and IV with terminal preening brush; leg formula 1423 in ♂ , 4123 in ♀; abdomen oval, tapering posteriorly; dorsal scutum complete in ♂ , absent in ♀; dorsal sigilla present; venter with paired tiny sclerites running from epigastric fold to spinnerets; inframamillary sclerite absent; male palp with single subtriangular RTA; tegulum oval, with short distal embolus forming single coil ( Figs 22, 23 ); female epigyne with copulatory openings situated laterally in paired circular ridges; vulva with short entrance ducts, directed anteriorly; ST II large, oval, anteromedially situated, ST I small, laterally situated. Figs 5–14. General habitus of Fuchiba gen. n. species: (5, 6) F. aquilonia sp. n. , male, Ndumo Game Reserve, and female, Marracuene; (7, 8) F. capensis sp. n. , De Hoop Nat. Res., male and female; (9, 10) F. montana sp. n. , male, Mohale Lodge, and female, Mohale Dam; (11) F. similis sp. n. , female, Ngome State Forest; (12) F. tortilis sp. n. , female, Fisherhaven; (13, 14) F. venteri sp. n. , Jakobsbaai, male and female. Scale bars = 1.0 mm. Species included: F. aquilonia , F. capensis , F. montana , F. similis , F. tortilis and F. venteri (all new). Key to species of the genus Fuchiba gen. n. 1 Males ( ♂ of F. similis sp. n. and F. tortilis sp. n. unknown) ................................. 2 – Females ................................................................................................................. 5 2 Embolus forming narrow coil with tip directed towards and ending close to cymbial tip ( Fig. 45 ) ................................................................................... F. venteri sp. n. – Embolus forming broad coil in transverse plane, tip closer to distal end of tegulum than to cymbial tip ( Fig. 26 ) ................................................................................. 3 3 Embolus forming complete coil through 360°, tip situated close to prolateral base and directed towards cymbial tip ( Fig. 36 ) ................................ F. montana sp. n. – Embolus only curving 180° to 270° from prolateral base ( Figs 26 , 32 )............... 4 4 Embolus coiled through 180°, tip directed slightly towards cymbial tip ( Fig. 26 ) .................................................................................................. F. aquilonia sp. n. – Embolus coiled through approx. 270°, tip slanting slightly towards base of tegulum ( Fig. 32 ) ...................................................................................... F. capensis sp. n. 5 Epigyne with distinctive paired posterior circular ridges ( Fig. 30 ), entrance ducts not coiled ( Fig. 31 ) ............................................................................................... 6 – Epigyne with subrectangular ridges with curved margins, entrance ducts distinctly coiled ( Figs 43, 44 ) ........................................................................ F. tortilis sp. n. 6 Epigyne with corrugated ridges anteriorly, ST II small and round ( Fig. 41 ).......... ....................................................................................................... F. similis sp. n. – Epigyne without corrugated ridges anteriorly, ST II usually larger and oval ....... 7 7 Copulatory openings situated anterolaterally in circular ridges; ST II large, length from anterior margin to posterior bend much greater than length of circular ridges ( Fig. 38 ) ..................................................................................... F. montana sp. n. – Copulatory openings situated mediolaterally or posteriorly in circular ridges; ST II smaller, length from anterior margin to posterior bend nearly equal to or smaller than length of circular ridges (e.g. Fig. 30 ) .......................................................... 8 8 Base of ST II initially bending posteromedially following entrance ducts before bending anteriorly into oval receptacle; ST II orientated parallel to body axis ( Fig. 30 ) ............................................................................................. F. aquilonia sp. n. – Base of ST II initially bending anteromedially following entrance ducts before bending anterolaterally into oval receptacle; ST II orientated obliquely relative to body axis ( Figs 34 , 47 ) ......................................................................................... 9 9 Copulatory openings broad ( Fig. 47 ), lateral receptacles of ST I distinctly separated ( Fig. 48 ); carapace yellow-brown ................................................. F. venteri sp. n. – Copulatory openings narrow ( Fig. 34 ), lateral receptacles of ST I close together ( Fig. 35 ); carapace yellow-brown to red-brown ......................... F. capensis sp. n.