Attacobius tremembe,

Pereira-Filho, José Moisés B., Saturnino, Regiane & Bonaldo, Alexandre B., 2018, Five new species and novel descriptions of opposed sexes of four species of the spider genus Attacobius (Araneae: Corinnidae), Zootaxa 4462 (2), pp. 211-228: 224-226

publication ID

publication LSID

persistent identifier

treatment provided by


scientific name

Attacobius tremembe

n. sp.

Attacobius tremembe  n. sp.

Figs 22–24View FIGURES 19–24; Map 2

Type material. ♀ holotype from Distrito de Irrigação dos Tabuleiros Litorâneos do Piauí [02°54'19.96"S, 41°46'24.11"W], Parnaíba, Piauí, Brazil, 2008, J.A.S. Cunha leg. ( IBSP 144009View Materials)GoogleMaps  .

Etymology. The specific name refers to the Tremembé, an indigenous nation that occupied the Delta of the Parnaíba River.

Diagnosis. Females of Attacobius tremembe  n. sp. are similar to those of A. attarum Roewer  , A. nigripes (Mello-Leitão)  and A. kitae Bonaldo & Brescovit  by the presence of a small, continuous ventral epigynal plate ( Platnick & Baptista 1995: figs 12, 18; Bonaldo & Brescovit 2005: fig. 21). They differ from those of A. attarum  and A. kitae  by the smaller secondary spermathecae and from those of A. nigripes  by the presence of unsclerotized copulatory ducts ( Figs 22–24View FIGURES 19–24).

Description. Female (holotype, IBSP 144009). Carapace dark yellow, with black spot on each anterior median eye area; chelicerae and fangs dark yellow; endites pale yellow with white apex; labium dark yellow; sternum pale yellow with brown margins; legs: femur and patella yellow, tibiae, metatarsus and tarsus pale orange; abdomen pale grey. Total length 3.1. Carapace 1.47 long, 1.25 wide, 0.42 high. Clypeus 0.13 high. Eye diameters and interdistances: AME 0.10, ALE 0.10, PME 0.10, PLE 0.10; AME –AME 0.07, AME –ALE contiguous, PME –PME 0.12, PME –PLE 0.06, ALE –PLE contiguous. MOQ length: 0.25, front width: 0.27, back width: 0.25. Chelicerae 0.40 long, with 3 promarginal and 2 retromarginal teeth. Sternum 0.83 long, 0.87 wide. Abdomen 1.69 long, 1.13 wide. Leg measurements: I: lost. II: 1.21/ 0.49/ 1.03/ 1.17/ 0.91/ 4.81. III: 1.14/ 0.47/ 1.00/ 1.16/ 0.89/ 4.66. IV: 1.41/ 0.49/ 1.24/ 1.37/ 0.98/ 5.49. Leg spination: I: lost. II: femur d1-1-0, p0, r0, v0; tibia d0, p0, r0, v0-2-2; metatarsus d0, p0, r0, v2.2.0. III: femur d1-1-0, p0, r0, v0; tibia d0, p0, r0, v0; metatarsus d0, p0, r0, v0. IV: femur d1-1-0, p0, r0, v0; tibia d0, p0, r0, v0; metatarsus d0, p0, r0, v0. Epigynum: ventral surface medially excavated; ventral plate continuous, small; posterior transverse septum present; dorsal extension of epigynal posterior plate reduced; copulatory openings ventral, medially placed; copulatory ducts translucent, spermathecae separated from each other; primary spermathecae relatively large, rounded; secondary spermathecae present, tapering anteriorly ( Figs 22–24View FIGURES 19–24).

Male. Unknown.

Distribution. State of Piauí, Brazil (Map 2).

Material examined. Only the type.


Instituto Biologico de Sao Paulo