Pterotricha esyunini Zamani, 2018

Pterotricha esyunini Zamani, 2018 View in CoL ( Fig. 1 View Figure 1 a-d, g)

Material examined. 2♀ ( NHMB), Iraq, Thi-Qar Province , Al-Nasiriyah City, the Archaeological Ziggurat of Ur, 30°58'10.0"N, 46°06'53.0"E, semi-desert, 20 August 2021 (leg. G. A. Al-Yacoub), ( Fig. 1g View Figure 1 ) GoogleMaps .

Diagnosis. The female of Pterotricha esyunini closely resembles Pterotricha lesserti Dalmas, 1921 which is widespread in the Middle East. Both species have trapezoidal anterior (widened) part of fovea ( Af) with unpaired anterior hood ( Ah) and short copulatory ducts ( Cd) tightly pressed to the receptacles ( Re). The female of Pterotricha esyunini can be distinguished from that of P. lesserti by the lateral margins ( Lm) converging anteriorly (vs. subparallel), undivided anterior part of fovea (vs. anterior part of fovea divided by median septum) and by relatively longer accessorial glands ( Ag), which surpass the anterior edges of receptacles (vs. accessorial glands not surpass the anterior edges of receptacles) (cf. Figs 1c–d and 1e–f View Figure 1 ). For diagnosis of the male see Zamani (2018).

Description. Female. Total length: 5.6. Carapace: 2.3 long, 2 wide. Abdomen: 3.3 long, 1.9 wide. Carapace, sternum, chelicerae, and labium light brown without distinct patterns. Abdomen beige-colored with light gray patterns forming a longitudinal line crossed by three transverse lines. Legs light brown. Measurements of legs: I: 9.0 (2.5, 1.0, 2.0, 2.0, 1.5). II: 8.7 (2.2, 1.0, 2.0, 2.0, 1.5). III: 8.9 (2.2, 1.0, 2.0, 2.2, 1.5). IV: 11.4 (3.0, 1.0, 2.5, 3.0, 1.9). Leg spination: I: Fe d1-1-1 p0-1-1; Ti p0-1-0 v2-2-1; Mt v2-2-2. II: Fe d1-1-1 p0-1-1; Ti p1-1-1 v2-2-1 Mt p0-1-0 v2-2-2. III: Fe d0-1-1 p0-1-1 r0-1-1; Pa p1 v1; Ti d1-0-1 p1-1-1 r1-1-1 v2-2-2. IV: Fe d1-0-1 p0-1-1 r0-1-1; Ti d1-0-1 p1-1-1 r1-1-1 v0-2-2; Mt d1-0-1 p1-1-1 r1-1-1 v2-2-1.

Epigyne as in Figs 1b–d View Figure 1 . Anterior part of the fovea 2.3 times wider than long. Anterior hood very deep. Lateral margins touch each other anteriorly and smoothly diverge posteriorly. Median septum ( Ms) triangular, not reaching the anterior (widened) part of fovea. Copulatory ducts short, forming tight loops. Receptacles oval, not well distinguished from copulatory ducts. Accessorial glands long, stick-like, diverging at a right angle.

Male. See Al-Yacoub et al. (2021a).

Distribution. Known only from the type locality ( Fig. 2 View Figure 2 ).