The genus Ctenomelynthus (Hemiptera: Heteroptera: Coreidae: Acanthocephalini), with the description of three new species and key to the known species Author Brailovsky, Harry text Zootaxa 2018 4420 4 571 582 journal article 29155 10.11646/zootaxa.4420.4.7 cdd4b871-c712-43cc-b93e-683cce85d722 1175-5326 1455467 E4AA5BB3-9778-4EF5-84F6-0243CF5BCF0E Key to the species of Ctenomelynthus 1 Meta-acetabulae yellow to yellowish white................................................................. 2 - Meta-acetabulae shiny reddish brown or shiny black tinged or without metallic bluish green reflections, with posterior border eventually yellow and never with posterio lobe entirely yellowish white.......................................... 3 2 Pro-, meso-, and metapleura shiny brick red; fore and middle femora unicolorous, pale castaneous orange; abdominal sterna III to VII on female with seven alternate longitudinal stripes, four of them yellow to yellowish white and three brick red to dark reddish castaneous......................................................................... coxaliS Breddin - Inner half of pro-, meso-, and metapleura with yellow, lengthwise stripe that covers the acetabulae and upper half with wide metallic green stripe; fore and middle femora bicolorous, yellow with external pale brown stripe; abdominal sterna III to VII of female solid yellow........................................................................ urbinuS sp. nov. 3 Callar region dark yellow to pale yellowish orange........................................................... 4 - Callar region shiny reddish brown, scattered with metallic bluish green reflections.................................. 5 4 Triangular process of pronotum elongate, broad, conspicuously surpassing the posterior border of pronotal disk; fore and middle femora dark castaneous; antennal segments I to III pale castaneous (basal third of I black) brunneiventriS Breddin (in part) - Triangular process of pronotum short, slightly exposed; fore and middle femora pale castaneous orange; antennal segments I to III pale castaneous orange (basal third of I black)............................................... Sanchezi sp. nov. 5 Triangular process of pronotum elongate, broad, conspicuously surpassing the posterior border of pronotal disk....................................................................................... brunneiventriS Breddin (in part) - Triangular process of pronotum short, slightly exposed........................................................ 6 6 Hind femur bicolored, dorsally shiny dark reddish brown and ventrally shiny black; coxae and trochanter shiny black to shiny reddish brown; head ventrally black with buccula and yellow longitudinal stripe close to each eye............................................................................................................ venuStuluS sp. nov. - Hind femur shiny pale castaneous orange; fore and middle coxae and trochanter shiny pale castaneous orange; head ventrally yellow to pale orange.................................................................... inermibuS Distant