Ctenomelynthus coxalis 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 : 574-575

Ctenomelynthus coxalis Breddin

( Figs. 5–9 )

Ctenomelynthus coxalis Breddin, 1903: 374 –375.

Petalops willineri Kormilex, 1952: 94 –97, syn. nov.

Redescription. Male. Dorsal coloration. Head, including neck, black; upper border of antenniferous tubercles, space between eye and ocelli, and narrow longitudinal stripe running between ocelli to apex of tylus yellow; antennal segment I castaneous orange, basal joint black, segments II–III castaneous orange, IV dark castaneous orange; pronotum shiny brick red, posterior margin black, tinged with metallic bluish green reflections; collar shiny brick red, tinged with metallic bluish green reflections; callar region with two yellowish orange spots lateral to midline; scutellum shiny brick red, tinged with metallic bluish green reflections, basal angles and apex yellowish orange to yellowish white; clavus and corium shiny brick red, tinged with metallic bluish green reflections; costal and apical border of corium dark orange; hemelytral membrane dark brown; connexival segments III–VI pale yellow, VII with anterior half pale yellow and posterior half black; dorsal abdominal segments dark brown to black, scars of scent glands IV–V and V–VI yellow. Ventral coloration. Head black, buccula and wide longitudinal stripe close to eye pale yellow; preocular space black; rostral segments dark castaneous orange (apex of IV black); pro-, meso-, and metapleura shiny brick red; acetabulae and posterior lobe of metapleura pale yellowish white; anterior lobe of meta-acetabulae reddish brown; prosternum black; mesosternum black with narrow longitudinal stripe dark castaneous orange; metasternum dark castaneous orange; metathoracic peritreme dark castaneous orange with anterior lobe black; coxae and trochanters shiny black to reddish brown; fore and middle femora pale castaneous orange; hind femora with dorsal surface dark castaneous orange and ventral surface pale castaneous orange; fore and middle tibiae pale castaneous orange and hind tibiae dark castaneous orange; tarsi pale yellow to pale yellowish orange; abdominal sterna III–VI shiny castaneous orange, with pleural margin yellow; sternite VII black with anterior margin shiny castaneous orange, and pleural margin castaneous except the anterior third yellow; genital capsule black with pale yellow spot lateral to midline; abdominal spiracles yellow. Structure. Thorax: triangular process of pronotum tiny to large and acute, not reaching the anterior margin of scutellum; humeral angles rounded.

Female. Color and habitus similar to male. Abdominal sterna III–VII with seven alternate longitudinal stripes, four of them yellow to yellowish white and three brick red to dark reddish castaneous; paratergite VIII yellow with inner angle reddish brown; paratergite IX and gonocoxae I reddish brown to black; abdominal spiracles yellow.

Variation. 1, trochanters black to reddish brown with inner face yellow.

Measurements. Male. Body length 16.18; head length 1.60; head width across eyes 2.35; interocular distance 0.98, preocular distance 0.95; interocellar distance 0.36; antennal segments: I 4.30, II 3.85, III 3.45, IV 7.95; pronotum: total length 2.95, maximum width across humeral angles 3.50; scutellum: length 2.00, width 1.45.

Measurements. Female. Body length 15.79; head length 1.45; head width across eyes 2.30; interocular distance 1.00, preocular distance 0.90; interocellar distance 0.37; antennal segments: I 3.85, II 3.45, III 3.05, IV 7.80; pronotum: total length 2.70, maximum width across humeral angles 3.45; scutellum: length 1.95, width 1.50.

General distribution. Cited from Bolivia (Nigrillani, Nor-Yungas) and from Peru (Marcapata, and Callanga) (Breddin 1903, Blöte 1938, Kormilev 1952, Packauskas 2010).

Type material examined. Petalops willineri : male (paratype), Bolivia, Nigrillani, Nor Yungas (MABR).

Material examined. New records. BOLIVIA: 1 male, La Paz, Mapiri , 10–16-VIII-1989, L. E. Peña ( USNM) ; 1 male, Chapare, Sajta, XI-1993, without collector (UNAM). PERU: 1 female, Putamayo District, La Sombra , 22- VIII-1929, without collector ( UNAM) ; 1 female, Putamayo District, La Chorrera , 17–20-VIII-1920, without collector ( CUIC) ; 1 male, Madre de Dios, Rio Tambopata Reserve, 30 air km SW of Puerto Maldonado , 1–26-XI- 1982, E. S. Ross ( CASC) ; 1 female, Madre de Dios, Estacion Biologica Los Amigos , 12.55152°S – 70.09734°W, 3– 23-IV-2015, without collector ( UNAM) ; 1 female, Cusco, Estacion Biologica Villa Carmen , 12.89454°S – 71.39935°W, XI-2014, without collector ( FSCA) ; 1 female, Cusco, Estacion Biologica Villa Carmen , 522 m, 12.89454°S – 71.39935°W, 3–10-IV-2014, without collector ( UNAM).

Discussion. Ctenomelynthus coxalis Breddin is recognized by having the pro-, and mesoacetabulae yellowish white, and meta-acetabulae with anterior lobe brick red and posterior lobe yellowish white; metathoracic peritreme dark castaneous orange with the anterior lobe black; callar region yellow; and pro-, meso-, and metapleura shiny brick red with metallic bluish green reflections.

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).