Eucteniza zapatista, 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 : 52-53

Eucteniza zapatista sp. n. 'The Zapatista Trapdoor Spider’Figs 1, 48-52

Type material.

Male holotype (EU012), from Paso de Cortes, Puebla, Mexico, 19.1167, -98.7667 6, 3000m, coll. C. Bolivar 18.vii.1943. Male holotype deposited in AMNH.

Etymology.

The specific epithet is a noun taken in apposition and is in reference to the common name used for the Mexican Liberation Army of the South ( Ejército Libertador del Sur) led by Emiliano Zapata (1879-1919).

Diagnosis.

Male Eucteniza zapatista leg I morphology is similar to Eucteniza diablo however it lacks tarsal spines and has a more inflated or swollen tibia (Figs 48, 49, 52). Males can be further distinguished from all other species by having an extensive patch of spines on the retrolateral distal aspect of the palpal tibia (Figs 51, 52).

Description of male holotype.

Specimen preparation and condition. Specimen preserved in 70% EtOH. Pedipalp, legs I, II removed, stored in vial with specimen. Coloration faded. General coloration. Carapace dark reddish brown 2.5YR 3/4. Abdomen reddish black 2.5YR 2.5/1. Cephalothorax. Carapace 6.13 long and 5.56 wide, with dense fringe of black setae. Foveal groove deep and procurved. AME slightly elevated in center. AER and PER relatively straight. AME slightly larger in diameter than PME. Sternum moderately setose, STRl 3.56, STRw 3.24. Posterior sternal sigilla large, elongate and contiguous, medial pair of anterior sigilla moderate in size and inset, anterior pair small and marginal. Chelicerae with anterior tooth row comprising 9 teeth, posterior margin with patch of approximately 20 small denticles. Palpal endites with very small, evenly distributed, poorly defined cuspules, LBw 1.26, LBl 0.75. Rastellum consists of 6 spines on a mound. Legs. Leg I 5.69, 3.00, 3.76, 3.68, 2.13; leg IV: 5.31, 2.80, 4.36, 4.80, 2.60. Very light tarsal scopulae on legs I, II, III. Leg I tibia with 2 very stout, short megaspines with prominent base; TSp 0, TSr 0, TSrd 0 (Figs 48, 49, 52); Leg II spination Fig. 50. Pedipalp. PTw 1.36, PTl 3.32, Bl 1.50. Embolus slightly flared tip; dense spine patch tibia distal retrolateral aspect (Figs 51, 52).

Variation.

Known only from the single type specimen.

Description of female.

Known only from the male holotype specimen.

Distribution.

Known only from the type locality, municipality of Puebla, Mexico (Fig. 1).