Eucteniza rosalia, Bond, Jason E. & Godwin, Rebecca L., 2013

Bond, Jason E. & Godwin, Rebecca L., 2013, Taxonomic revision of the Trapdoor spider genus Eucteniza Ausserer (Araneae, Mygalomorphae, Euctenizidae), ZooKeys 356, pp. 31-67 : 60-62

Eucteniza rosalia sp. n. 'The Río de Santa Rosalía Trapdoor spider’Figs 1, 75

Type material.

Female holotype (EU101), Mulegé, Baja California Sur, Mexico, 26.8905, -111.981 5, 10m, coll. V. Roth 26.i.1965, deposited in AMNH.

Etymology.

The specific epithet is a noun taken in apposition and is in reference to the Río de Santa Rosalía near the type locality.

Diagnosis.

Eucteniza rosalia can be distinguished from other known Baja California taxa for which females are known by having a pronounced spermathecal lateral base extension by having a distally squared bulb (Fig. 75) as opposed to rounded. The spermathecal stalk in Eucteniza diablo is noticeably shorter and lacks a distinct lateral basal extension (Fig. 36).

Description of female holotype.

Specimen preparation and condition. Specimen preserved in 70% EtOH; color likely faded. Color. Carapace dark reddish brown 5YR 3/4. Abdomen dark yellowish brown 10YR 4/4. Cephalothorax. Carapace 5.332 long, 4.666 wide, sparsely setose. Fringe absent. Foveal groove deep and procurved. Tubercle absent. AER procurved, PER recurved. AME very slightly larger in diameter than PME. Sternum moderately setose, STRl 3.124, STRw 2.969. Posterior sigilla large and not contiguous, medial pair of anterior sigilla moderate in size and inset, anterior pair small and marginal. Chelicerae anterior tooth row armed with 6 teeth with posterior margin comprising a row of 9 small denticles. Palpal cuspules numerous and widespread across endites; labium with 11 cuspules, LBw 1.033, LBl 0.855. Rastellum consists of 7 spines positioned on a small mound. Walking legs. Leg I 11.219 long. Tarsus I with 10 trichobothria clustered proximally. Legs I, II with dense scopulae. PTLs 20, TBs 12. Preening combs absent. Spermathecae with moderately sized lateral base, terminal bulb square (Fig. 75).

Variation.

Known only from type specimen.

Description of male.

Known only from the female type specimens.

Distribution.

Known only from the type locality, Baja California Sur, Mexico.