Nigrotomocoris longirostris Henry and Menard, new species

(Figs. 52–54, 107, 108, 132)

urn:lsid:zoobank.org:act: F7626D5D-1F31-4A34-B143-91E7E1F6B156

Diagnosis. This species (Figs. 52–54) is distinguished by the relatively small size, the uniformly black color, the long labium that extends to the hind coxae, and the more elongate, conical male genital tubercle (Fig. 132).

It is most similar to N. keltoni and N. nigrus in the overall uniformly black antennae and legs. Nigrotomocoris nigrus differs from N. longirostris by the larger size (3.24–3.88 mm), the pale fascia across the base of the head, the labium extending only to the middle coxae, the hemelytra having a bluish sheen, and the stout, apically rounded genital tubercle; N. keltoni, differs in having a much shorter antennal segment II, the distinct dirty white pleural areas on the thorax, and the much more elongate and spinelike genital tubercle.

DESCRIPTION. Male (n = 5; holotype measurements in parentheses): Length from apex of head to cuneal fracture 2.08–2.16 mm (2.08 mm); length from apex of head to apex of membrane 3.00– 3.12 mm (2.92 mm); widest point across hemelytra 1.38–1.44 mm (1.42 mm). Head: Width across eyes 0.83–0.88 mm (0.85 mm); interocular width 0.50–0.56 mm (0.54 mm). Labium: Length 1.15–1.20 mm (1.15 mm). Antenna: Segment I length 0.38–0.43 mm (0.42 mm); II, 0.54–0.61 mm (0.59 mm); III, 0.22–0.26 mm (0.26 mm); IV, 0.21–0.26 mm (0.26 mm). Pronotum: Median length 0.43–0.45 mm (0.45 mm); posterior width 1.10–1.18 mm (1.14 mm).

Macropterous, weakly ovoid. COLORATION. Head: Uniformly black, eyes purplish red to reddish brown. Labium: Dark brown to black, extending to hind coxae. Antenna: Uniformly brown to black. Pronotum, mesoscutum, scutellum brown to black. Hemelytron: Dark brown to black, lacking a bluish sheen; membrane smoky brown, veins dark brown. Ventral surface: Thorax dark brown, mesosternum shiny; abdomen dark brown to black, genital tubercle dark brown to black. Legs: Coxae dark brown; femora dark brown; tibiae dark brown; tarsomeres and claws dark brown.

SURFACE AND VESTITURE. Head: Surface shiny, impunctate, with short white sericeous setae. Antenna: setae short, dense, simple. Thorax: Pronotum, mesoscutum, and scutellum with short white simple and sericeous setae; calli and anterior margin somewhat shiny, calli and anterior margin impunctate, disc posterior to calli uniformly punctate. Hemelytron: Setae short, simple, white; surface dull black, without a bluish sheen; veins of membrane with short setae. Abdomen with sparse simple setae. STRUCTURE. As in generic description.

Male genitalia: Endosoma and phallotheca as in generic description. Left paramere (Fig. 107) L- or scytheshaped. Right paramere (Fig. 108) elongate, shallow C-shaped, apex broadly spatulate with a small upturned hook.

Female: (n = 5): Length from apex of head to cuneal fracture 2.04–2.20 mm; length from apex of head to apex of membrane 3.00– 3.12 mm; widest point across hemelytra 1.39–1.50 mm. Head: Width across eyes 0.85–0.90 mm; interocular width 0.53–0.56 mm. Labium: Length 1.17–1.22 mm. Antenna: Segment I length 0.43–0.45 mm; II, 0.54–0.56 mm; III, 0.22–0.24 mm; IV, 0.22–0.27 mm. Pronotum: Median length 0.52–0.56 mm; posterior width 1.38–1.50 mm.

Similar to male in size, shape, and coloration. Genitalia as in generic description.

ETYMOLOGY. This species is named longirostris to denote the relatively long labium that extends to the hind coxae or beyond.

HOST. Taken on ponytail palm, Beaucarnea recurvata Lem. [ Nolinoideae: Asparagaceae].

DISTRIBUTION. Known only from Puebla, Mexico.

TYPE MATERIAL. Holotype ♂, MEXICO: Puebla: 1 mi. sw. Zapotitlan, 11 July 1973, Maestro & Schaffner, ex Beaucarnea recurvata (TAMU) . Paratypes: MEXICO: Puebla: 23♂♂, 9♀♀, same data as for holotype (21♂, 7♀♀ TAMU; 2♂♂, 2♀♀ USNM); 36♂♂, 15♀♀, 1 mi. sw. Zapotitlan, 8 July 1973, Mastro & Schaffner, ex Beaucarnea recurvata (TAMU [267-271, 273-275, 277-294, 296, 298-299, 301, 303-310, 312-324, 326-333, 335-338, 340, 342, 344, 345, 347]; 2♂♂, 2♀♀, UNAM [267, 325, 334, 346]; 5 ♂♂ [272, 276, 300, 302, 311], 5 ♀♀ [295, 297, 339, 341, 343] USNM) ; 1♂, Puebla, 2 km W Zapotitlan, 1470 m, 18°19.5’N, 97°29.9’W, 30 July 1995, T. J. Henry & E. Barrera (USNM) .