Eucteniza panchovillai, 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 : 59-60

Eucteniza panchovillai sp. n. 'Pancho Villa’s Trapdoor Spider’Figs 1, 74

Type material.

Female holotype (EU060) and paratype (EU068), from San Juan del Rio, Durango, Mexico, 24.7833, -104.4500 5, 1789m, coll. W. Gertsch 1.viii.1947. Female holotype deposited in AMNH.

Etymology.

The specific epithet is a patronym named for Mexican historical figure Pancho Villa.

Diagnosis.

Female specimens of Eucteniza panchovillai can be distinguished from all other known species by having spermathecae that comprise a long lateral extension and a slender stalk that curves distally into a small terminal bulb; all other species have shorter thicker stalks that do not curve distally and terminate in a larger bulb that exceeds the stalk diameter (Fig. 74).

Description of female holotype.

Specimen preparation and condition. Specimen preserved in 70% EtOH. Color faded. Color. Carapace yellowish red 5YR 4/6. Abdomen yellowish brown 10YR 5/6. Cephalothorax. Carapace 8.827 long, 8.064 wide, sparsely setose. Fringe absent. Foveal groove deep and procurved. Tubercle absent. AER procurved, PER slightly recurved. AME slightly larger in diameter than PME. Sternum moderately setose, STRl 5.364, STRw 5.318. Posterior sigilla large and nearly contiguous and irregular in shape, medial pair of anterior sigilla moderate in size and inset, nearly contiguous with posterior pair, anterior pair small and marginal. Chelicerae with anterior tooth row armed with 7 teeth with posterior margin comprising a long patch of many small denticles. Palpal cuspules numerous and widespread across endites; labium with 7 cuspules, LBw 2.033, LBl 1.446. Rastellum consists of 9 spines positioned on a small mound. Walking legs. Leg I 20.557 long. Tarsus I with 8 trichobothria clustered proximally. Legs I, II with dense scopulae. PTLs 64, TBs 19. Preening combs present. Spermathecae with enlarged laterally extended base, curved distally, terminal bulb width subequal to stalk (Fig. 74).

Variation

(3). Cl 8.01-9.87, 9.07 ± 0.31; Cw 7.06-8.59, 8.12 ± 0.27; STRl 4.52-5.8, 5.37 ± 0.22; STRw 4.55-5.58, 5.24 ± 0.19; LBw 1.66-2.25, 1.92 ± 0.11; LBl 1.17-1.54, 1.31 ± 0.07; Leg I: 18.61-21.79, 20.47 ± 0.56; ANTd 7-9, 8.2 ± 0.37; PTLs 25-38, 32 ± 2.43; TBs 12-22, 15.6 ± 1.94.

Description of male.

Known only from the female type specimens.

Additional material examined.

Mexico: Durango: San Juan del Rio, 24.7833, -104.4500 5, 1789m, W Gertsch 1.viii.1947 [EU060, 068, 4♀, AMNH].

Distribution.

Known only from the type locality, Durango, Mexico.