Ctenomelynthus urbinus Brailovsky, 2018

Brailovsky, Harry, 2018, The genus Ctenomelynthus (Hemiptera: Heteroptera: Coreidae: Acanthocephalini), with the description of three new species and key to the known species, Zootaxa 4420 (4), pp. 571-582 : 578-579

Ctenomelynthus urbinus Brailovsky sp. nov.

( Figs. 15–16 )

Description. Holotype female. Dorsal coloration. Head pale orange, postocular tubercle and two longitudinal stripes that run on each side of the midline black, tinged with metallic bluish green reflections; preocular surface and neck black; antennal segment I orange, basally black, segments II–III orange, IV (absent); pronotum shiny brick red with metallic bluish green reflections; callar region yellowish orange; collar and area around calli metallic green; posterolateral margins and posterior margin black with metallic green reflections; scutellum shiny brick red, with scattered metallic green reflections, with basal angles and apex pale yellowish orange; clavus and corium brick red with metallic green reflections; costal border dark orange; hemelytral membrane pale brown, basal angle darker; connexival segments III–VI yellow with inner borders dark brown, VII dark brown with upper margin and posterior third yellow, VIII–IX black with upper border yellow; abdominal segments III–IX black, scent glands scars IV–V and V–VI yellow. Ventral coloration. Head and rostral segments I–IV yellow (apex of IV black); pro-, meso-, and metasternum yellow; propleura entirely metallic green; pro-acetabulae yellow, with scattered metallic green reflections; meso-, and metapleura with upper margin entirely metallic green, inner margin yellow; meso-, and meta-acetabulae yellow, with scattered metallic green reflections; posterior border of meta-acetabulae entirely metallic green; anterior and posterior lobes of metathotacic peritreme and evaporative area yellow; coxae yellow with brown discoidal spot; trochanters yellow; fore and middle femora yellow with external pale brown stripe; hind femora dark orange with the spines and external stripe reddish brown; abdominal sternites and genital plates yellow; sternites IV–VI with an irregular pale orange stripe lateral to midline; abdominal spiracles pale yellowish orange. Structure. Thorax: triangular process of pronotum tiny, acute, and touching anterior border of scutellum; humeral angles rounded with tiny expansion.

Male. Unknown.

Measurements. Female. Body length 14.85; head length 1.55; head width across eyes 2.05; interocular distance 0.91, preocular distance 0.98; interocellar distance 0.31; antennal segments: I 2.80, II 2.70, III 2.50, IV absent; pronotum: total length 2.75, maximum width across humeral angles 3.20; scutellum: length 1.75, width 1.26.

Type material. HOLOTYPE female: BRAZIL: Chapada (acc. No. 2966), IV (without more details, and without collector) ( CMNH). PARATYPE: 1 female, same data as holotype ( UNAM) .

Etymology. Named after Felipe Urbina de la Vega, distinguished Mexican Gastroenterologist.

Discussion. This species resembles C. coxalis Breddin in having acetabulae and callar pronotal surface mostly yellow. In C. urbinus Brailovsky sp. noV., acetabulae are yellow with metallic green reflections, head ventrally including rostral segments I–III (IV absent), anterior and posterior lobe of metathoracic peritreme, evaporative area, abdominal sterna, and the genital plates entirely yellow; upper margin of pro-, meso-, and metapleura with wide yellow, lengthwise stripe that inclusively covers the acetabulae and upper half with wide metallic green stripe; and femora yellow or pale orange with dark brown longitudinal stripe running dorsally. In C. coxalis , acetabulae are entirely yellowish white; the head black, ventrally with bucculae and area close to eyes yellow; rostral segments I–IV reddish brown; pro-, meso-, and metapleura shiny brick red; femora pale to dark castaneous orange; the metathoracic peritreme with anterior lobe black, posterior lobe dark castaneous; and abdominal sterna and genital plates never entirely yellow.

Figures

FIGURES 10–17. Ctenomelynthus spp. 10–12. C. inermibus (Distant). 10, dorsal view (male). 11, ventral view (female). 12, lateral view (female). 13–14, C. sanchezi sp. nov. 13, dorsal view (male). 14, lateral view (female). 15–16, C. urbinus sp. nov. 15, dorsal view (female). 16, lateral view (female). 17, dorsal view of C. venustulus sp. nov. (male).