Architis ikuruwa Carico, 1981

Santos, Adalberto J., 2007, A revision of the Neotropical nursery-web spider genus Architis (Araneae: Pisauridae), Zootaxa 1578 (1), pp. 1-40 : 17-19

Architis ikuruwa Carico, 1981

Figures 8A–B , 11

Architis ikuruwa Carico 1981: 147 , figs 30–31, map 2, tables 1–2. Brignoli 1983: 700; Platnick 1989: 394.

Type material. Holotype of Architis ikuruwa Carico, 1981 : female, Canje , Ikuruwa River, Guyana, 05º70’N, 57 o 50’W, August–December 1961, G. Bently ( AMNH) (examined).

Additional material examined. BOLIVIA: Beni: ( Estación Biológica del Beni), 15 o 23’S, 66 o 59’W, November 1989, J.A. Coddington et al., 4♀ ( USNM) , 1♀ ( IBSP 62889 ) . GUYANA: Upper Takutu-Upper Essequibo: ( Essequibo River , 4.42 km S Gunn’s Strip Bank), 1 o 36’45.7”N, 58 o 38’14.6”W, 6–15 July 1999, J.A. Coddington et. al., 2♀ ( USNM) . PERU: Loreto: close to Pithecia , 05 o 11’S, 72 o 42’W, May–June 1990, T. Erwin & D. Silva, 1♀ ( MUSM) . SURINAM: Saramacca: ( Voltsberg-Raleighvallen Nature Reserve ), 04 o 32’N, 56 o 32’W, February 1982, D. Smith, 1♀ ( MCZ) .

Diagnosis. Architis ikuruwa shares with A. altamira sp. nov. the shape of the epigynum with a pair of large, laterally directed, sclerotised hoods delimiting the copulatory openings ( Figs 8A, C ). The species can be distinguished by the larger sclerotised hoods ( Fig. 8A ) and the long and anteriorly curved CD which are encapsulated by epigynal folds only in the posterior half ( Fig. 8B ).

Description

Male. Unknown.

Female ( based on IBSP 62889 from Estación Biológica del Beni, Bolivia)

Carapace brown, with a median and a pair of lateral cream-coloured stripes. Lateral stripes with small lat- eral extensions close to leg bases. Anterior eye row procurved, lateral eyes strongly projected ventrally and almost twice as large as medians. Posterior eyes of similar size. Clypeus, chelicerae and endites creamcoloured, labium dark brown. Sternum cream-coloured, with lateral black spots close to leg bases. Pedipalpi and legs cream-coloured. Legs with apical dark rings on femur, tibia and metatarsus. Opisthosoma dark gray, paler laterally and ventrally. Sides suffused with black spots. Venter with a median black stripe. Spinnerets pale brown, circled by a black pigment ring. Total length 4.7. Carapace 2.0 long, 1.7 wide. Tibia I length 3.5, II 3.6, III 2.7, IV 3.2. Opisthosoma 2.7 long, 1.3 wide.

Variation. Females, total length 4.7–4.8, carapace width 1.7–1.8.

Distribution. Northern South America, Peru and Bolivia ( Fig. 11 ).

Figures

FIGURES 8A–F. Architis spp. A–B, A. ikuruwa Carico: A, female epigynum, ventral view; B, female internal genitalia, dorsal view. C–D, A. altamira sp. nov.: C, female epigynum, ventral view; D, female internal genitalia, dorsal view. E–F, A. dianasilvae sp. nov.: E, female epigynum, ventral view; F, female internal genitalia, dorsal view. Arrows point to the copulatory opening. Scale bars: 0.1 mm.

FIGURE 11. Geographic distribution records of Architis comaina sp. nov. (empty circle), A. ikuruwa Carico (cross), A. altamira sp. nov. (full triangle), A. dianasilvae sp. nov. (full circle), Architis tenuipes (Simon) (empty square) and A. turvo sp. nov. (empty triangle).