Agroecotettix vaquero sp. nov.

Figs 2 T, 4 P, 5 P, 21 A – J, 25

Diagnosis.

Differentiated from other species in the genus by the combination of male cerci with the ventral branch reduced and rounded as in Fig. 2 S; in lateral view, the sheath of the aedeagus is well developed and expanded laterally around the valves; the aedeagus valves are wide with their apices broadly curved in lateral view as in Fig. 5 P; in caudal view the valves or greatly narrowed in their apical third as in Fig. 4 P.

Male measurements (mm).

(n = 17) Body length 21.2–25.2 (mean = 23.5); pronotum length 4.7–6.0 (mean = 5.4); tegmen length 2.7–4.1 (mean = 3.4); hind femur length 10.9–13.2 (mean = 12.1); cerci length 1.0–1.7 (mean = 1.3); basal width of cercus 0.5–0.7 (mean = 0.6); mid-cercal width 0.4–0.6 (mean = 0.5); cerci dorsal fork length 0.4–0.6 (mean = 0.5); cerci dorsal fork apex width 0.2–0.4 (mean = 0.3); cerci ventral fork length 0.1–0.3 (mean = 0.2); cerci ventral fork apex width 0.1 (mean = 0.1).

Phallus measurements (mm).

(n = 4) Length 0.8–1.0 (mean = 1.0); apex width 0.3 (mean = 0.3); middle width 0.5 (mean = 0.5); basal width 0.6–0.7 (mean = 0.6); lateral apex width 0.3–0.4 (mean = 0.4); lateral medial width 0.5–0.6 (mean = 0.5); lateral basal width 0.5 (mean = 0.5).

Female measurements (mm).

(n = 17) Body length 24.5–29.9 (mean = 26.6); pronotum length 5.9–7.2 (mean = 6.5) tegmen length 3.1–4.8 (mean = 3.9); hind femur length 13.0–15.4 (mean = 14.3); dorsal ovipositor valve length 1.3–2.2 (mean = 1.7); ventral ovipositor valve length 1.2–2.2 (mean = 1.7).

Holotype.

• 1 ♂, Mexico, Coahulla, 11 mi NW Muzquiz, 31 July 1959, 1550 ft, T. J. Cohn, # 126, UMMZI-0058033. Deposited in the Mississippi Entomological Museum.

Specimens examined.

Mexico: Coahuila: • 5.8 mi S Castaños, 20 August 1965, T. J. Cohn, 2700 ft, (3 ♂, 1 ♀) • 2 mi NW Hermanas, 19 September 1958 13–1400 ’ T. J. Cohn (1 ♂) • 5 mi S Hermanas, 1 August 1959, T. J. Cohn, 1350 ft (1 ♂, 1 ♀) • 2 mi SE Muzquiz, 14 September 1958, T. J. Cohn, 3700 ft (3 ♂, 5 ♀) • 4 mi E Muzquiz, 1 August 1959, T. J. Cohn, 1600 ft (2 ♂, 2 ♀) • 2 mi SE Muzquiz, 14 September 1958, T. J. Cohn, 3700 ft. (2 ♂, 2 ♀) • 11 mi NW Muzquiz, 31 July 1959, T. J. Cohn, 1550 ft (3 ♂, 2 ♀) • San Juan de Sabinas-Rosita, 15–16 September 1958, T. J. Cohn, 1200 ft (5 ♂, 4 ♀) .

Habitat.

Cohn (1965) described the habitat at 5.8 mi S Castanos as low Mesquite, Creosote, Vachellia rigidula, and Agave lechuguilla .

Distribution.

Found in northern Coahuila, Mexico (Fig. 25 A).

Etymology.

The species name vaquero is the Spanish word for cowboy.

Suggested common name.

Vaquero aridland scrub jumper.