A revision of the crab spider genus Heriaeus Simon, 1875 (Araneae: Thomisidae) in the Afrotropical Region Author Niekerk, P. van Author Dippenaar-Schoeman, A. S. text African Invertebrates 2013 2013-11-14 54 2 447 447 http://www.bioone.org/doi/abs/10.5733/afin.054.0213 journal article 10.5733/afin.054.0213 2305-2562 7918661 Heriaeus zanii sp. n. Figs 13 , 53–56 , 58 Etymology: The species is named for Zani van der Walt of Oudtshoorn for his contribution to spider research in the Western Cape . Diagnosis: The species is recognized by their long, spiniform acute abdominal setae ( Fig. 13 ). The epigyne has a hood with a horseshoe-shaped, darkly sclerotized and thickened edge, becoming wider posteriorly, with lateral and posterior thickening and folding of the integument ( Fig. 55 ). The embolus of the male palp is short, winding less than once around tegulum, the tip slender and straight, and the RTA ends in small lobe and distal tooth ( Figs 53, 54 ). The male palp resembles that of H. copricola sp. n. , but the new species differs in the shape of the RTA and in having spiniform abdominal setae. Description: Female ( allotype ). Size : TL 4.63, CL 2.04, CW 2.02. Colour : Carapace with two longitudinal brown stripes extending to PEs; medially two irregular white lines between and close to brown stripes, converging posteriorly, and thin median brown stripe between white lines; setae transparent, some pale brown; sternum mottled with white; endites and labium mottled with white; clypeus white; chelicerae yellow-brown or white; eye region yellow-brown or white, eye tubercles white.Abdominal setae transparent, with a variable number (8–24) of brown setae spread either evenly across dorsum or present only in the posterior half. Legs with white marks on all segments; white markings sometimes absent from tibia and tarsus. Palp with femora and patellae or all segments with white marks. Carapace : Eye measurements : AME–AME 0.24, ALE–AME 0.14, PME–PME 0.20, PLE–PME 0.31,AME–PME 0.19, MOQL AME–PME 0.24, MOQAW AME–AME 0.30, MOQPW PME–PME 0.26. Leg measurements : leg I Fe 1.79, Pat 0.94, Tib 1.75, Mt 1.58, Ta 0.54, total 6.60; leg II Fe 1.69, Pat 0.88, Tib 1.22, Mt 0.83, Ta 0.40, total 5.02; leg III Fe 1.16, Pat 0.68, Tib 0.77, Mt 0.77, Ta 0.52, total 3.90; leg IV Fe 1.43, Pat 0.59, Tib 0.93, Mt 0.95, Ta 0.54, total 4.44. Abdomen : Round with long, spiniform, acute setae; venter with fine hairs. Epigyne : With horseshoe­shaped hood with darkly sclerotized and thickened edge, wider posteriorly ( Fig. 55 ); copulatory ducts tubular, with anterior end slightly enlarged; copulatory ducts lie diagonally below hood ( Fig. 56 ). Figs 53–56. Heriaeus zanii sp. n. : (53) male palp, ventral view; (54) male lateral view; (55) epigyne, ventral view; (56) epigyne, dorsal view. Male ( holotype ). Size : TL 3.26, CL 1.44, CW 1.59. Colour : Carapace with three longitudinal brown stripes, converging anteriorly, extending into eye region; two irregular white lines separating bands, setae brown; chelicerae yellow-brown, some white mottling at distal ends; clypeus white; eye region white. Abdomen brown with white mottling, forming a distinct pattern, bordered laterally with white; setae brown dorsally and transparent laterally; lateral setae with blackish brown marks at their bases; venter white. Legs with white markings on coxae, trochanters and distal end of femora. Palp with white marks on femur and patella. Carapace : Eye measurements : AME–AME 0.16, ALE–AME 0.18, PME–PME 0.13, PLE–PME 0.23, AME–PME 0.18, MOQL AME–PME 0.25, MOQAW AME–AME 0.21, MOQPW PME–PME 0.19. Leg measurements : leg I Fe 2.69, Pat 0.92, Tib 2.44, Mt 2.50, Ta 1.18, total 9.73; leg II Fe 2.48, Pat 0.78, Tib 2.09, Mt 2.05, Ta 1.03, total 8.43; leg III Fe 1.15, Pat 0.55, Tib 1.04, Mt 0.70, Ta 0.50, total 3.94; leg IV Fe 1.26, Pat 0.40, Tib 0.81, Mt 0.96, Ta 0.51, total 3.94. Abdomen : Oval, Figs 57–59. Distribution of Heriaeus spp. in the Afrotropical Region. truncated anteriorly; setae long with acute tips, shorter setae laterally; venter covered in fine hairs. Male palp : Embolus short, winding less than once around tegulum; embolus tip slender and straight; VTA short and digitiform; RTA ends in small lobe and distal tooth ( Figs 53, 54 ). Holotype : ♂ SOUTH AFRICA : Western Cape : Vanrhynsdorp ( 31.60°S 18.75°E ), 5.ix.1991 , M.K.P. Meyer , beating Othonna cylindrical ( NCA 92 /109). Allotype : 1♀ SOUTH AFRICA : Western Cape : Oudtshoorn ( 33.59°S 22.21°E ), 24.ix.1988 , M.K.P. Meyer , shrub layer ( NCA 89 /435). Paratypes : SOUTH AFRICA : Free State : 1♂ Philippolis, P.K . Le Roux Dam ( 30.25°S 25.27°E ), 13.iii.1986 , M.K.P. Meyer , beating, herb layer ( NCA 91 /313) ; 1♀ Boshof , Table Farm 242 ( 28.43°S 24.50°E ), 18.viii. 1987 , NMBA Entomology Staff , under rocks ( NMBA 1864 ) . Northern Cape : 1♂ 1 imm. ♀ Prieska , Green Valley Nuts , Orange R. ( 29.62°S 22.75°E ), 26.x.2001 , C. Haddad , pitfall trap ( NCA 2003 /1042) ; 1♂ Springbok ( 29.66°S 17.88°E ), 17.ix.1983 , herb layer, E. Ueckermann ( NCA 84 /226) . Western Cape : 1♂ Beaufort West , Eerste Water farm ( 32.69°S 22.96°E ), 9.xii.2007 , D. Jacobs , pitfall traps , Karroo bush ( NCA 2008 /1582) ; 1♂ Clanwilliam , Skerpheuwel ( 32.18°S 18.23°E ), 22.x.1987 , L. Lotz , under plants ( NMBA 2047 ) ; 1♂ Vredenburg , Olifants Kraal ( 32.57°S 18.09°E ), 23.x.1987 , L.N. Lotz , on ground ( NMBA 2070 ) ; 1♀ Cederberg , Wilderness area ( 32.45°S 19.24°E ), 1.x.2009 , S. Kritzinger­Klopper , pitfall trap ( NCA 2012 /710) ; 1♀ Calvinia , 10 km N of Loeriesfontein ( 31.48°S 19.77°E ), 22.x.1990 , S. Louw , on plants ( NMBA 5495 ) ; 1♀ Jacobsbaai ( 33.15°S 18.03°E ), 2.x.2007 , R. Lyle & C. Haddad , leaf litter, coastal fynbos ( NCA 2008 /389) . Other material examined: Northern Cape : 1 imm. ♀ Hopetown ( 29.62°S 24.06°E ), 28.ix.1988 , C. Barnard , on Arctotis sp. ( NCA 89 /482) . Western Cape : 1 imm. ♀ Vredenburg ( 32.57°S 18.09°E ), 23.x.1987 , NMBA Entomology Staff , under plants ( NMBA 3041 ) . Distribution: South Africa ( Western Cape , Northern Cape and Free State ) ( Fig. 58 ). Natural history: Collected on the ground, leaf litter and plants, such as Othonna cylindrica and Arctotis species. Females were collected from August to October and males during March, September to December.