Synotaxus bonaldoi , Santos, Adalberto J. & Rheims, Cristina A., 2005

Santos, Adalberto J. & Rheims, Cristina A., 2005, Four new species and new records for the spider genus Synotaxus Simon, 1895 (Araneae: Synotaxidae) from Brazil, Zootaxa 937, pp. 1-12: 5-6

publication ID 10.5281/zenodo.171147

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Synotaxus bonaldoi

n. sp.

Synotaxus bonaldoi  n. sp.

Figures 2, 7–10, 19

Type material. ♂ holotype from Porto Velho, Rondônia, Brazil, IV. 1996, Equipe IBSP / SMNK coll, in IBSP 15680.  Paratypes: 1 ♀, Reserva Extrativista de Humaitá , Rio Branco, Acre, Brazil, 8.VII. 1995, R.S. Vieira leg. ( IBSP 15595);  1 ♂, 1 ♀, Reserva Extrativista de Catuaba , Senador Guiomard, Acre, Brazil, 9.IV. 1996, Equipe. IBSP/SMNK coll. (MCN). 

Additional material examined. BRAZIL: Acre: Rio Branco, Reserva Extrativista de Humaitá , 12.IV. 1996, Equipe IBSP /SMNK, 1 ♂ ( IBSP 8809)  ; Xapuri, Reserva Extrativista da Pimenteira , 5.– 7.IV. 1996, Equipe IBSP /SMNK, 2 ♂ ( IBSP 15522)  ; Marechal Thaumaturgo, Parque Nacional da Serra do Divisor, Travessa Baixa , 16.XI. 1996, R.S. Vieira, 1 ♀ ( IBSP 9404)  ; Parque Nacional da Serra do Divisor, 14.III. 1997, L. Resende & R.S. Vieira, 1 ♂ ( IBSP 12316). 

Etymology. This species is named after the spider taxonomist and collector of the type series, Alexandre B. Bonaldo, in recognition of the importance of his contributions to South American spider systematics.

Diagnosis. S. bonaldoi  is similar to S. monoceros  by the presence of a complex patellar apophysis with a long, pointed branch and a shorter bifid one ( Agnarsson 2003: fig. 2 B, 3 B). They differ by the presence of two translucent apical projections in the TTA, and by the large paracymbium with a cat paw shaped apex in S. bonaldoi  (Figs. 2, 7– 8). ♀♀ present two large epigynal atria and large spermathecae, as S. turbinatus  ( Exline & Levi 1965: figs. 10–15), S. ecuadorensis  ( Exline & Levi 1965: figs. 22–23) and S. itabaiana  ( Figs. 17–18View FIGURES 15 – 18). They differ by the presence of a small, pentagonal unsclerotized area in the epigynum (Fig. 9), by the short fertilization ducts and the presence of lateral gland­shaped projections on the spermathecae of S. bonaldoi  (Fig. 10).

Description. ♂ ( IBSP 8809). Coloration as in ♂ of S. brescoviti  . Ocular area overhanging clypeus, with one curved setae between the anterior median eyes. Legs thin, with numerous setae. Abdomen elongated and pointed posteriorly, scarcely covered with setae. Total length 3.5, carapace 1.1 long, 0.9 wide. Patella­tibia I length 4.6, II 2.7, III 1.3, IV 2.5. Abdomen 2.4 long, 0.7 wide. Patellar apophysis shorter branch flattened and with small rounded projections. Paracymbium with prolateral basal swelling, TTA pointed apically (Figs. 2, 7– 8).

Synotaxus bonaldoi  n. sp. 7. Male palp, ventral view. 8. Ditto, lateral view. 9.

Female epigynum, ventral view. 10. Female internal genitalia, dorsal view. Scales: 0.1 mm.

♀ ( IBSP 9404). Coloration, body shape and pilosity as in ♀ of S. brescoviti  . Ocular area anteriorly triangular in dorsal view, with a small curved anterior setae. Total length 4.5, carapace 1.2 long, 0.8 wide. Patella­tibia I length 4.0, II 4.5, III 1.1, IV 2.3. Abdomen 3.3 long, 1.0 wide. Copulatory ducts inconspicuous, apparently absent. Accessory sacs small, medially inserted in the spermathecae (Fig. 10).

Distribution. Northern Brazil ( Fig. 19View FIGURE 19).


Brazil,Sao Paulo, Sao Paulo, Instituto Butantan


Instituto Biologico de Sao Paulo