Ctenomelynthus venustulus 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 : 579-581

publication ID	https://doi.org/ 10.11646/zootaxa.4420.4.7
publication LSID	lsid:zoobank.org:pub:E4AA5BB3-9778-4EF5-84F6-0243CF5BCF0E
DOI	https://doi.org/10.5281/zenodo.5949704
persistent identifier	https://treatment.plazi.org/id/03F37E7C-FFC0-FFDD-BFE8-21A4FA7CFDD8
treatment provided by	Plazi
scientific name	Ctenomelynthus venustulus Brailovsky
status	sp. nov.

Treatment

Ctenomelynthus venustulus Brailovsky View in CoL sp. nov.

( Figs. 17 View FIGURES 10–17 , 22–23 View FIGURES 18–23 , 26)

Description. Holotype 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 segment I dark castaneous orange with base black, segments II–IV dark castaneous orange; pronotum shiny brick red, densely tinged with metallic bluish green reflections; callar region brick red; scutellum brick red, tinged with metallic bluish green reflections and apex yellow; clavus and corium brick red, tinged with metallic bluish green reflections; hemelytral membrane brown with basal third darker; connexivum yellow; dorsal abdominal segments dark brown, scent glands scars IV–V and V–VI yellow. Ventral coloration. Head black, with buccula and longitudinal stripe close to each eye yellow; rostral segment I brown, segments II–IV dark castaneous (apex of IV black); pro-, meso-, and metasternum shiny brick red; metathoracic peritreme dark brown with anterior lobe orange; fore and middle legs with coxae and trochanters shiny black to reddish brown, femur, tibiae and tarsi dark castaneous orange; hind leg with coxae and trochanter shiny black to reddish brown, femora bicolorous, dorsal surface shiny dark reddish brown, and ventral surface shiny black; tibiae and tarsi dark castaneous orange; abdominal sterna III–VII castaneous orange with pleural margin yellow; genital capsule dark brown with yellow spot lateral to midline.

Structure. Thorax: triangular process of pronotum small, slightly acute, and extending to anterior border of scutellum; humeral angles rounded. Male genital capsule. Posteroventral edge slightly concave with lateral margins rounded (Fig. 26). Parameres. Figs. 22–23 View FIGURES 18–23 .

Female. Unknown.

Measurements. Male. Body length 14.57; head length 1.55; head width across eyes 2.28; interocular distance 0.95, preocular distance 0.87; interocellar distance 0.35; antennal segments: I 3.45, II 3.15, III 2.70, IV 6.06; pronotum: total length 2.65, maximum width across humeral angles 3.16; scutellum: length 1.90, width 1.20.

Type material. HOLOTYPE male: SURINAME: Paramaribo, 1-VII- 1958 . P. H. van Doesburg ( RMNH). PARATYPES. SURINAME: 1 male, Paramaribo, Botanical Garden , VI-1945, Gerskes ( UNAM) ; 1 male Jaghust, 12-VII- 1938, Gerskes (RMNH).

Etymology. From the Latin, “ venustulus ”, meaning pretty.

Discussion. Resembling C. sanchezi in having head ventrally black with buccula and longitudinal stripe running close to each eye yellow. In C. venustulus Brailovsky sp. noV., hind femora are bicolored, with dorsal surface shiny dark reddish brown and ventral surface shiny black; fore and middle trochanters shiny dark reddish brown to dark castaneous brown; the fore and middle femora dark castaneous orange; the calli shiny dark castaneous orange; dorsal abdominal segments III–VI dark brown with scars of scent glands IV–V and V–VI yellow. In C. sanchezi the hind femora are unicolorous, entirely shiny black to shiny reddish brown; fore and middle trochanters shiny pale yellow to pale yellowish orange; fore and middle femora pale yellow to pale yellowish orange; calli yellow; and dorsal abdominal segments III–VI pale orange (posterior margin of VI black).