Stenometapodus aurantiacus, Brailovsky, 2018

Brailovsky, Harry, 2018, Descriptions of Zygometapodus gen. nov. and a new species of Stenometapodus (Hemiptera: Heteroptera: Coreidae), Acta Entomologica Musei Nationalis Pragae 58 (1), pp. 143-149 : 144-145

Stenometapodus aurantiacus sp. nov. ( Fig. 1 )

Type locality. Brazil, Rio de Janeiro, Itatiaia.

Type material. HOLOTYPE: ♀, BRAZIL: Itatiaya , 31.i.1927, col. Dr. Seitz ( SMFD) . PARATYPE: 1 ♀, BRAZIL: Itatiaya, 19.i.1927, col. Dr. Seitz ( UNAM).

Description. Female (holotype). Dorsal coloration. Head shiny black, with inner face of antenniferous tubercle and longitudinal stripe running between ocelli yellow; antennal segment I dark reddish brown, II–III dark castaneous orange with apical third black, and IV dark castaneous orange; pronotum, scutellum (apex yellowish orange), clavus and corium shiny black; claval and corial veins dark reddish brown; hemelytral membrane black; connexival segments pale yellowish orange with anterior and posterior border dark brown; abdominal segments dorsally black.

Ventral coloration. Head black with tylus and the area close to eyes pale yellow; bucculae dark yellow; rostral segments I–III dark reddish brown and IV pale yellowish orange. Pro-, meso-, and metapleura shiny black; metathoracic scent gland peritreme and evaporative area shiny orange; inner border of acetabula yellow; metaacetabula tinged with bluish green reflections; prosternum black; mesosternum black with a yellow longitudinal stripe running across the middle; basal half of metasternum dark orange and distal half black; fore leg with coxae shiny reddish brown with a dark yellow spot near apical third; trochanters and femora shiny reddish brown; basal half of tibiae dark castaneous orange and apical half pale golden yellowish orange, except apical joint reddish brown; basal and middle tarsal segment pale orange, and apical segment pale orange with apical third reddish brown; middle legs with coxae and trochanters shiny reddish brown; femora pale orange with basal and apical border, spines, and outer surface near apical third reddish brown; tibiae pale golden yellowish orange with basal joint reddish brown; tarsi pale orange; hind leg with coxae and trochanters shiny reddish brown; femora dorsally shiny reddish brown, ventrally pale orange and spines reddish brown; tibiae and tarsi pale golden yellowish orange with apex of each spine dark brown. Middle third of abdominal sternites III–VII and pleural margin pale orange with a wide black longitudinal stripe between them; abdominal spiracles black with pale orange rim; posterior border of each sternite dark brown; middle third of abdominal sternite VII black; gonocoxae I black; paratergites VIII and IX black with wide orange discoidal spot at middle third.

Structure. Body size large, over 20.0 mm. Head. Antennal segment I moderately robust, thickest, slightly curved outward and longer than maximum length of head; rostrum reaching posterior border of mesosternum. Thorax. Pronotum: callar region slightly raised; triangular process elongate, stout. Abdomen. Connexivum with dorsal surface armed with short spines.

Measurements (in mm; n = 1). Total body length 23.10. Head length 2.29; width across eyes 2.41; interocular distance 0.94; interocellar distance 0.37; preocular distance 1.30; antennal segments: I – 3.96, II – 3.84, III – 2.97, IV – 5.70. Pronotal length 4.15; maximum width across humeral angles 8.06. Scutellar length 2.79, basal width 2.66.

Male. Unknown.

Differential diagnosis. Stenometapodus aurantiacus is the only species of the genus with the hind tibiae pale golden yellowish-orange. In the other known species hind tibiae are black or reddish brown or dark castaneous. See the key below.

Etymology. The species epithet is the Latin adjective aurantiacus (- a, - um), meaning orange, referring for the golden yellowish-orange color of its hind tibiae.

Distribution. Brazil: Rio de Janeiro.

Figures

Figs 1–4. Stenometapodus spp., habitus in dorsal view. 1 – S. aurantiacus sp. nov. (female); 2 – S. v-luteum Breddin, 1903 (female); 3 – S. ambiguus Brailovsky, 1984 (female); 4 – S. guttifer (Stål, 1859) (male).