3.18. Ayacucho roeweri nom. nov.

Figs 2H, 28

Cajacaybia spinigera Roewer, 1957: 74 (desc.), figs. 27 (dorsal habitus), 28 (pedipalpus); Kury, 2003: 144 (cat.).

Redescription.

FEMALE: Measurements (n =1) DWS: 3.6; DSL: 4.0; CL: 1.4. FIVL: 3.5. ChL: 1.3. Coloration (in ethanol): Uniformly yellowish (reddish-brown, in the original description), with darker spots on the carapace, especially behind ocularium and legs. Dorsum: (Fig. 2H) Alpha-type DSS, with wide coda. Anterior margin of dorsal scutum with a median elevation; with granules sparsely distributed on the lateral regions of DS. Ocularium with a pair of long spines; with granules sparsely distributed. Carapace with few granules in lateral regions to predominantly smooth near its posterior margin. Areas I-IV with granules sparsely distributed; I with a paramedian pair of tubercles; II-IV with a median pair of small tubercles, of equal size, but larger than those on area I. Lateral margins of dorsal scutum with granules sparsely distributed. Posterior margin of dorsal scutum with a row of larger blunt tubercles, with a more acuminate median tubercle, interspersed with smaller tubercles. Free tergites I-II with a row of small blunt tubercles, with a large median acuminate tubercle, projecting backwards. Free tergite III with a row of granules and a median pair of acuminate tubercles that are smaller than those on tergites I-II. Chelicerae. (Fig. 2H) Not swollen. Segment I granulate. Segment II predominantly smooth, two teeth on the finger. Segment III with three teeth. Pedipalpus . Small granules distributed on the dorsal surface of the femur. Trochanter with a ventrodistal setiferous tubercle. Femur with a row of five tiny ventral tubercles, slightly larger than the dorsal ones. Tibia: prolateral III, retrolateral iiIi. Tarsus: prolateral IIii, retrolateral iIiii. Venter. Coxae I-IV smooth. Between the coxae II-III and III-IV with a minute tubercle on the apical part. Genital area smooth. Free sternites without granules. Anal operculum smooth. Legs. (Fig. 2H) Coxae I-II each with one prolateral and one retrolateral apophysis; III with prolateral apophysis; IV with granules distributed throughout its surface, and a prodistal apophysis with acuminate apex. Trochanters I-III smooth; IV with few dorsal median granules and a retroapical acuminate tubercle. Femora I-III with few granules sparsely distributed; IV densely granulate; with a retrolateral row of 10 small acuminate tubercles. Patellae-tibiae I-IV smooth. Tarsal segmentation: (n =1) 7, 12, 8, 8. - MALE: unknown.

Diagnosis.

It differs from other species of the genus with known females by having a high median spine in the free tergites I-II (Fig. 2H).

Remarks.

Considering that Cajacaybia spinigera and Palcares spiniger were described in the same work (Roewer 1957), we established the precedence of Palcares spiniger name (Art. 24.2 of ICZN). Therefore, since they are both species in the genus Ayacucho, Cajacaybia spinigera Roewer, 1957 is a secondary homonym of Palcares spiniger Roewer, 1957 and must be replaced. Consequently, we create Ayacucho roeweri nom. nov. as a replacement name for Roewer’s name.

Derivatio nominis.

The specific epithet of masculine gender, in the genitive form, dedicated to the German arachnologist Carl Friedrich Roewer (1881-1963), the author of original name in secondary homonymy.

Distribution.

(Fig. 28) PERU. Ancash. Cajacay.

Material examined.

Type material: Hototype ♀, ' PERU. Ancash. Cajacay, Rio Fortaleza, 2,700 m a.s.l., 5/III/1956, Weyrauch leg. (SMF RII 11645 /28) .