Nigrotomocoris nigrus (Carvalho), 2020

Nigrotomocoris nigrus (Carvalho) , new combination

( Figs. 55–57 View FIGURES 55–66 , 109, 110 View FIGURES 104–112 , 133 View FIGURES 129–137 )

Caulotops nigrus Carvalho 1985a: 268 View in CoL (original description); Carvalho and Froeschner 1987: 147 ( type list); Schuh 1995: 540 (catalog), 2013 (online catalog).

DIAGNOSIS. This species ( Figs. 55–57 View FIGURES 55–66 ) is recognized by the transverse yellow to yellowish-brown fascia along the posterior margin of the vertex and the bluish sheen on the hemelytra.

It is most similar to N. longirostris in sharing a flattened body, overall black color including the antennae and legs, and the relatively thick first and second antennal segments, but is larger, has a pale transverse band on the vertex, the labium is much shorter, and the genital tubercle ( Fig. 133 View FIGURES 129–137 ) is stouter and apically rounded. Nigrotomocoris keltoni and N. tibiopallidus differ from and N. longirostris and N. nigrus in having a less flattened body and C-shaped left parameres (versus L-shaped parameres); N. keltoni also has the white pleural patches and a more spinelike genital tubercle ( Fig. 131 View FIGURES 129–137 ) and N. tibiopallidus has pale tibiae and antennal segments.

DESCRIPTION. Male (n = 5): Length from apex of head to cuneal fracture 2.24–2.48 mm; length from apex of head to apex of membrane 3.24–3.88 mm; widest point across hemelytra 1.44–1.58 mm. Head: Width across eyes 0.93–0.99 mm; interocular width 0.56–0.59 mm. Labium: Length 1.04–1.14 mm, extending to middle coxae. Antenna: Segment I length 0.46–0.53 mm; II, 0.62–0.67 mm; III, 0.22–0.29 mm; IV, 0.27–0.34 mm. Pronotum: Median length 0.43–0.51 mm; posterior width 1.14–1.23 mm.

Macropterous, weakly ovoid. COLORATION. Head: Black, posterior margin of vertex with a transverse pale band extending between eyes, eyes purplish red to reddish brown. Labium: Dark brown to black. Antenna: Uniformly brown to black. Pronotum, mesoscutum, and scutellum: Brown to black. Hemelytron: Dark brown to black, sometimes with a bluish sheen; membrane smoky brown, veins dark brown. Ventral surface: Thorax dark brown; abdomen dark brown to black, genital tubercle dark brown to black. Legs: Coxae, femora, tibiae, and tarsomeres 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 shiny, impunctate, disc uniformly punctate. Hemelytron: Setae short, simple, white; surface with a bluish sheen; veins of membrane with short, distinct setae. Abdomen with sparse simple setae. STRUCTURE. As in generic description.

Male genitalia: Endosoma and phallotheca as in generic description. Left paramere ( Fig. 109 View FIGURES 104–112 ) L- or scytheshaped. Right paramere ( Fig. 110 View FIGURES 104–112 ) elongate, shallow C-shaped, apex spatulate with a small upturned hook.

Female (n = 5; holotype measurement in parentheses): Length from apex of head to cuneal fracture 2.36–2.52 mm ( 2.44 mm); length from apex of head to apex of membrane 3.32–3.48 mm ( 3.40 mm); widest point across hemelytra 1.52–1.60 mm ( 1.70 mm). Head: Width across eyes 0.96–1.02 mm ( 0.99 mm); interocular width 0.59–0.62 mm ( 0.62 mm). Labium: Length 1.12–1.15 mm ( 1.15 mm). Antenna: Segment I length 0.48–0.53 mm (all antennae missing); II, 0.61–0.67 mm; III, 0.22–0.24 mm; IV, 0.29–0.32 mm. Pronotum: Median length 0.45–0.50 mm ( 0.46 mm); posterior width 1.18–1.23 mm ( 1.28 mm).

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

HOST. Unknown.

DISTRIBUTION. Described and previously known only from Oaxaca, Mexico. Puebla is a new Mexican state record.

TYPE MATERIAL EXAMINED. Holotype ♀, MEXICO: Oaxaca: Cineguillas , 18 Oct. 1978, H. Brailovsky ( UNAM).

OTHER SPECIMENS EXAMINED. MEXICO: Oaxaca: 46♂♂, 89♀, 3.4 mi. SE Matalan , 6-7 Aug. 1980, Schaffner ,

Weaver, Friedlander ( 39♂♂, 82♀♀ TAMU [136-148, 150, 152-153, 155-164, 167, 169-206, 209-219, 221-224, 226-244, 246-256, 259-266]; 2♂♂, 2♂♂, UNAM [165, 168, 257, 258]; 5♂♂ [149, 151, 154, 160, 166], 5♀♀ [207- 208, 220, 225, 245] USNM); 1 ♂♂, 2 ♂♂, Oaxaca, Puerto Angel , km 117, 29 May 1985, E. Barrera ( UNAM) . Puebla: 12♂♂, 6♀♀, 4 mi. W of Azumbilla , 22 July 1984, Carroll, Schaffner, & Friedlander ( TAMU; 3♂♂ [353, 359, 360], 2♀♀ [364-365] USNM) .

DISCUSSION. According to the original description, in addition to the holotype above, two paratypes of N. nigrus , a male and a female ( Mexico, Oaxaca, 6 mi. N Huajuapan , 6 Sept. 1972, G. F. & S. Hevel) were placed in the author’s collection, which was destroyed by the fire at the Museu Nacional in Rio de Janeiro, Brazil ( 2 Sept. 2018) .