Ctenomelynthus brunneiventris Breddin

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 : 573-574

Ctenomelynthus brunneiventris Breddin

( Figs. 1–4 , 18–19 , 24)

Ctenomelynthus brunneiventris Breddin, 1903: 375 .

Redescription. Male. Dorsal coloration. Head, including neck, black with space between eye and ocelli, and narrow longitudinal stripe running between ocelli to apex of tylus yellow; antennal segments I–IV dark castaneous; pronotal disk including the callar region shiny reddish brown, scattered with metallic bluish green reflections or with callar region yellow; collar densely tinged with metallic bluish green reflections; scutellum dark reddish brown; lateral margins with metallic bluish green reflections, and basal angles and apex yellow; clavus pale castaneous orange, scattered with metallic bluish green reflections; corium pale castaneous orange, scattered with bluish green reflections at apical margin; hemelytral membrane brown, basal angle darker; connexival segments III–VI yellow, VII black with anterior margin yellow; dorsal abdominal segments III–VI black, lateral margins pale orange, scars of scent glands IV–V and V–VI yellow; segment VII black. Ventral coloration. Head black, buccula and longitudinal stripe close to eye yellow; rostral segment I dark brown, II–IV castaneous orange (apex of IV black); thorax shiny black, scattered with metallic bluish green reflections; pro-, meso-, and meta-acetabulae shiny reddish brown; inner border of pro-, and mesoacetabulae, and anterior margin of prosternum yellow; mesosternum dark yellow; metathoracic peritreme pale brown to black; fore and middle legs with coxae shiny black, trochanters and femora dark castaneous, tibiae and tarsi pale yellowish orange; hind leg with coxae, trochanters, and femora shiny reddish brown, tibiae dark castaneous with apex pale yellowish orange, tarsi pale yellowish orange; abdominal sterna III–VI pale reddish orange with pleural margins yellow, VII black with anterior half reddish orange and pleural margin yellow; genital capsule black with pale yellow spot lateral to midline. Structure. Thorax: triangular process of pronotum elongate, stout, reaching anterior margin of scutellum; humeral angles obtuse or with small expansion. Male genital capsule. Posteroventral edge nearly straight with lateral expansions rounded (Fig. 24). Parameres. Figs. 18–19 .

Female. Color and habitus similar to male. Pronotum shiny reddish black; collar densely tinged with metallic bluish green reflections; callar region pale yellowish orange; posterolateral margins, posterior margin and area around callar region shiny dark reddish brown; pronotal disk scattered with metallic bluish green reflections; dorsal abdominal segments VIII–IX black; abdominal sterna III–VII alternate seven longitudinal stripes, four of them yellowish white and three pale reddish orange; genital plates dark reddish orange with pleural margins yellow.

Variation. 1, callar region dark reddish brown or yellow. 2, dorsal abdominal segments III–VI pale yellowish orange, and VII–IX black. 3, clavus with basal half black and posterior half pale castaneous orange, and each scattered with metallic bluish green reflections.

Measurements. Male. Body length 15.65; head length 1.60; head width across eyes 2.35; interocular distance 0.91, preocular distance 0.91; interocellar distance 0.35; antennal segments: I 3.65, II 3.35, III 2.40, IV 9.20; pronotum: total length 2.90, maximum width across humeral angles 3.15; scutellum: length 1.80, width 1.30.

Measurements. Female. Body length 15.55; head length 1.65; head width across eyes 2.30; interocular distance 0.86, preocular distance 0.86; interocellar distance 0.30; antennal segments: I 3.60, II 2.95, III 2.75, IV 7.22; pronotum: total length 2.90, maximum width across humeral angles 3.15; scutellum: length 1.80, width 1.27.

General distribution. Described from Bolivia without formal localities and later cited from Peru (Marcapata) (Breddin 1903, Blöte 1938).

Material examined. New records. BOLIVIA: 1 male, 1 female, La Paz, Mapiri, 10–16-VIII-1989, L. E. Peña ( USNM). PERU: 3 males, 1 female, Junin, Anapati, 80 km SE Satipo, 800–900 m, 31-VII-1972, R. T., and J. C. Schuh ( AMNH, UNAM); 1 female, Cuzco, Estación Biologica Villa Carmen, 522 m, 12.89454°S – 71.39935°W, I- 2015 (without collector) ( FSCA).

Discussion. This species is recognized by having the triangular process of pronotum elongate, stout, reaching the anterior margin of mesosternum; corium pale castaneous orange, with scattered metallic bluish green reflections; pro-, meso-, and metapleura shiny black, scattered with metallic bluish green reflections; coxae entirely shiny black; trochanters and femora shiny black to dark reddish brown; and pro-, meso-, and meta-acetabulae shiny reddish brown with inner border yellowish white.

Figures

FIGURES 1–10. Ctenomelynthus spp. 1–4, C. brunneiventtris Breddin. 1, Dorsal view (female). 2, dorsal view (male). 3, ventral view (female). 4, lateral view (female). 5–9, C. coxalis Breddin. 5, dorsal view (male). 6, ventral view (male). 7, lateral view (male). 8, ventral view (female). 9, lateral view (female).

FIGURES 18–23. Parameres of Ctenomelynthus spp. 18–19, C. brunneiventris Breddin. 20–21, C. sanchezi sp. nov. 22–23, C. venustulus sp. nov. 24–26. Male genital capsule of Ctenomelynthus spp. 24, C. brunneiventris Breddin. 25, C. sanchezi sp. nov. 26, C. venustulus sp. nov.