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 antoni sp. n. Figs 3 , 18–21 , 57 Etymology: Named for Antonius van Harten, the collector of the paratype material, for his contribution in documenting the arachnid fauna of Yemen . Diagnosis: The species is recognized by the numerous very short, blunt abdominal setae and the epigyne, which is very small with a small knob-like hood ( Fig. 20 ). The male palp is distinct with its embolus having a U-shaped tip and a ventral lobe on the RTA ( Figs 18, 19 ). The embolus tip of the male palp resembles that of H. xanderi sp. n. ( Fig. 50 ), but the much longer RTA of this species has a ventral lobe, which H. xanderi sp. n. lacks. Description: Female ( allotype ). Size : TL 4.80, CL 1.47, CW 1.52. Colour : Carapace with two broad longitudinal brown stripes; lateral edge with white line; setae brown; chelicerae yellow-brown; clypeus with white line on anterior edge; eye region white or with white markings between median eyes. Abdomen cream, slightly mottled with brown and white; specimen from Senegal differs in having six round marks arranged in two longitudinal lines centrally ( Fig. 3 ) venter white, may be mottled with white or have a few brown spots laterally. Legs cream, dorsally with brown marks on femora II and III, tarsus I and metatarsi I–IV; slight variations in Senegal specimens, markings absent in Yemen specimens. Carapace : Eye measurements : AME–AME 0.17, ALE–AME 0.11, PME–PME 0.18, PLE–PME 0.20, AME–PME 0.16, MOQL AME–PME 0.23, MOQAW AME–AME 0.18, MOQPW PME–PME 0.23. Leg measurements : leg I Fe 1.42, Pat 0.76, Tib 1.17, Mt 1.07, Ta 0.52, total 4.94; leg II Fe 1.39, Pat 0.48, Tib 1.02, Mt 0.70, Ta 0.57, total 4.16; leg III Fe 0.84, Pat 0.42, Tib 0.60, Mt 0.52, Ta 0.43, total 2.81; leg IV Fe 1.18, Pat 0.32, Tib 0.60, Mt 0.57, Ta 0.41, total 3.08. Abdomen : Round, bearing numerous very short blunt setae; venter clothed with fine hairs. Epigyne : Very small with an unsclerotized small knob-like hood; two dark brown spots posteriorly indicating position of spermathecae ( Fig. 20 ); copulatory ducts two S-shaped coiled tubes ( Fig. 21 ). Male ( holotype ). Size : TL 2.60, CL 1.23, CW 1.31. Colour : Carapace with two very broad longitudinal brown stripes extending from PEs and towards carapace sides, becoming dark brown at posterior end; setae brown; chelicerae yellow-brown; clypeus yellow-brown with brown marks; eye region yellow-brown; eye tubercles grey. Abdomen yellow-brown, lateral thirds dark brown to yellow-brown with brown and white markings; venter white; setae brown. Legs cream with brown marks on distal part of tibia and metatarsus I. Carapace : Eye measurements : AME–AME 0.12, ALE–AME 0.8, PME–PME 0.15, PLE–PME 0.19,AME–PME 0.13, MOQL AME–PME 0.20, MOQAW AME–AME 0.18, MOQPW PME–PME 0.23. Leg measurements : leg I Fe 1.54, Pat 0.71, Tib 1.45, Mt 1.33, Ta 0.71, total 5.74; leg II Fe 1.52, Pat 0.54, Tib 1.10, Mt 1.15, Ta 0.68, total 4.99; leg III Fe 0.91, Pat 0.35, Tib 0.62, Mt 0.59, Ta 0.38, total 2.85; leg IV Fe 1.05, Pat 0.31, Tib 0.72, Mt 0.66, Ta 0.40, total 3.14. Abdomen : Oval, truncated anteriorly; bearing numerous very short, blunt setae; venter with fine hairs. Male palp : Embolus long, winding once around tegulum ( Fig. 18 ); embolus tip slender with U-shaped curve; VTA small and two-lobed, RTA with ventral lobe and long distal tooth ( Fig. 19 ). Holotype : ♂ SENEGAL : 5–10 km S of Richard Toll ( 16.33°N 15.50°E ), viii.1989 , J. Everts , semi­arid thorn bush (MRAC 172.021a). Allotype : 1♀ same data as holotype (MRAC 172.021b). Paratypes : SENEGAL : 3♂ 6♀ 14 imm. same data as holotype ( MRAC 172.021 ) ; 12♂ 12♀ 1 imm. same data but ix.1989 (MRAC 171.999, 172.005) ; 1♂ same data but viii–xi.1989 ( MRAC 174.239 ) ; 1♀ 20 km S of Richard Toll ( 16.33°N 15.50°E ), 18.ix.1991 , H. van der Valk , pitfall traps ( MRAC 200.583 ) . YEMEN : 1♀ near Sana’a ( 15.35°N 44.20°E ), 15.v.1998 , A. van Harten ( NCA 2012 /2056) ; 1♀ same locality, vii.1998 , A. van Harten ( NCA 2012 /2058) ; 2♀ Abs ( 16.00°N 43.20°E ), 20.iv.1998 , A. van Harten , in garden ( NCA 2012 /2057) ; 1♀ Wadi Warazan ( 13.40°N 44.23°E ), 17.xii.1999 , A. van Harten ( NCA 2012 /2059) . Distribution: Senegal and Yemen ( Fig. 57 ). Natural history: Females collected during April, May, June and December and adult males from August to November.