Architis altamira, Santos, 2007

Santos, Adalberto J., 2007, A revision of the Neotropical nursery-web spider genus Architis (Araneae: Pisauridae), Zootaxa 1578 (1), pp. 1-40 : 20

Architis altamira sp. nov.

Figures 8C–D , 11

Type material. Holotype: female, Castelo dos Sonhos, Altamira , state of Pará, Brazil 08º17’15”S, 54º59’55”W, D.F. Candiani, 12 November 2005 ( MPEG 2908 ) . Paratype: Female, same locality as holotype, 10 November 2005, D.F. Candiani & D.R. Santos-Souza ( IBSP 71414 ) .

Etymology. The specific name is a noun in apposition taken from the type locality.

Diagnosis. Architis altamira sp. nov. is close to A. comaina sp. nov. and A. ikuruwa with which it shares the epigynal MF which is appressed under the LL ( Figs 7C , 8A, C ) and the CD which is encapsulated in an interior fold of the epigynal wall ( Figs 7D , 8B, D ). It can be differentiated from these species by the presence of an irregularly shaped, sclerotised case encapsulating the CD close to the stalk of each spermatheca and the presence of a pair of cuticular flaps of the internal genitalia ( Fig. 8D ).

Description

Male. Unknown.

Female ( based on holotype from Castelo dos Sonhos, Brazil)

Carapace reddish-brown, dark brown medially and marginally. Anterior eye row procurved, lateral eyes strongly projected ventrally and almost twice as large as medians. Posterior eyes of similar size. Clypeus cream-coloured, chelicerae reddish-brown. Eye sizes and arrangement as in A. cymatilis (see Carico 1981; fig. 11). Sternum cream-coloured, with marginal brown spots at the base of coxae. Labium and endites reddishbrown. Pedipalpi and legs reddish-brown. Opisthosoma gray dorsally, with dark spots. Venter and sides cream-coloured, with dark spots. Spinnerets reddish-brown. Total length 3.2; carapace 1.7 long, 1.4 wide. Tibia I length 3.1, II 3.0, III 2.2, IV 2.7. Opisthosoma 1.5 long, 2.5 wide. LL of epigynum with a pair of anterior, laterally directed small hoods covering copulatory openings ( Fig. 8C ).

Variation. Female paratype, total length 3.1, carapace width 1.6.

Distribution. Known only from the type locality in northern Brazil ( Fig. 11 ).

Figures

FIGURES 7A–D. Architis comaina sp. nov. A, male pedipalpus, ventral view; B, male pedipalpus, lateral view; C, female epigynum, ventral view; D, female internal genitalia, dorsal view. Scale bars: A–B, 0.2 mm; C–D, 0.1 mm.

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).