Cromata graziae, Campos, Luiz Alexandre, 2005

Campos, Luiz Alexandre, 2005, A new species of Cromata Rolston from Brazilian and Venezuelan Amazon Forest (Hemiptera: Pentatomidae: Discocephalinae), Zootaxa 820, pp. 1-6 : 3-5

Cromata graziae , sp. nov.

( Figs. 1–6)

Etymology

The species is named in honor to Dr. Jocélia Grazia, for her great and valuable contributions to the knowledge of Neotropical pentatomids.

Material

Holotype male, VENEZUELA, Bolivar: El Bochinche, with the following labels: a) Venezuela, Bolivar, El Bochinche, Res. Forestal Imataca. 200m. 6–13­XII­74 [1974]; b) Expedicion Instituto Zoologia Agrícola Fac. Agronomia. U.C.V. Deposited in the Museo del Instituto de Zoología Agrícola Francisco Fernández Yépez. Paratype female, BRA­ ZIL, Amazonas: Coari, with the following labels: a) BR, AM, Coari, rio Urucu 4°49’23.4”S / 64°55’2.3”W 02–08/IV/1991, N.O. Aguiar et al. col. Deposited in the Instituto Nacional de Pesquisas da Amazônia.

Measurements

Female. Body length 9.12; abdominal width 5.44; head length 1.44; head width 1.84; pronotum length 2.00; pronotum width 5.04; scutellar length 3.68; scutellar width 2.88; length of antennal segments: I 0.64; II 0.56; III 0.88; IV 1.12.

Male. Body length 8.88; abdominal width 5.12; head length 1.60; head width 2.00; pronotum length 1.92; pronotum width 4.72; scutellar length 3.60; scutellar width 3.04; length of antennal segments: I 0.64; II 0.60; III 0.88; IV 1.04; V 1.52.

Description

Dorsal surface brown to light brown densely punctured in darker punctures (fig. 1). Ventral surface punctured in concolorous or darker punctures.

Head with few punctures on vertex and juga; ventral surface black, except apex of juga and anterior margin of buccula yellowish. Central disk of tylus swollen. Lateral margins of juga sinuous and emarginated; juga slightly surpassing tylus. Ocelli near posterolateral margin of head, yellowish. Antennal segments light brown, except basal third of segment V yellowish. Labrum rufous, labium yellowish; apical segment of rostrum attaining base of urosternite VII.

Pronotum with punctures two to four times larger than on head; disc bearing a large callose yellow area with few punctures; posterior to this area punctures dense and confluent; cicatrices inconspicuous. Anterolateral margins slightly sinuous; humeral angles rufous. Legs dark brown, except tarsi and basal half of femora yellowish, distal fourth of femora and base of tibia rufous. Scutellum with dense and confluent punctures, these decreasing in size toward apex; shallow, black fovea at basal angles of scutellum. Hemelytra finely, densely punctured, with 1+1 yellowish spots near the apex of radial vein; membranes dark brown. Connexival segments bearing a mesial orange macula.

Abdominal venter dark brown, densely punctured laterad to unpunctured central disc.

Female. Genital plates (fig. 2). Laterotergites 8 (la8) trapezoidal, posterior margin slightly convex; posterior margin of gonocoxites 8 (gc8) strongly convex, produced caudad over laterotergites 9 (la9). Laterotergites 9 not attaining the medial band uniting laterotergites 8.

Male. Pygophore (figs. 3–6). Ventral rim (vr) tumescent, u­shaped from ventral view and v­shaped from caudal view. With slight, mesial carina (c) projecting downwards from ventral rim forming a “y” mark over posterior surface of pygophore. Posterolateral angles (p) rounded, excavated, posteriorly projected, bearing subapical hair fringes (fr). Proctiger (pr) large, truncate at apex, covering most of pygophore; 1+1 hair fringes over dorsolateral surface of proctiger.

Comments

C. graziae , sp. nov. resembles C. ornata in the proportions of the antennal segments, color pattern of legs, shape and proportions of the head, length of rostrum, presence of mesial carina on gonocoxites 9, and laterotergites 9 touching mesially and covering proctiger. The new species can be distinguished from C. ornata by the former's smaller size, dorsal color pattern, contour of the posterior rim of gonocoxites 8, and shape of laterotergites 9.