Diagnose of the nominal subgenus of Edessa and description of the E. sexdens group (Heteroptera, Pentatomidae, Edessinae) Author Mendonça, Maria Thayane Da Silva Author Silva, Valéria Juliete Da 0000-0002-1845-5228 valeriajuliete@hotmail.com Author Fernandes, José Antônio Marin text Zootaxa 2023 2023-02-14 5240 1 1 63 http://dx.doi.org/10.11646/zootaxa.5240.1.1 journal article 256481 10.11646/zootaxa.5240.1.1 4d650293-3f9a-4bbe-9530-204a3b09ef8b 1175-5326 7639547 2FE467C1-EAC2-4E90-B673-CCE2CCA93C1D Edessa (E.) helix Erichson, 1848 (See Silva et al. 2017 — Figs. 12–16 ; 29–30 ; 35–36; Figs. 26 E,F , 32 A,B ) Edessa helix Erichson, 1848: 610 ; Walker, 1868: 428 ; Stål, 1872: 60 ; Lethierry & Severin, 1893: 190 ; Pittier & Biolley, 1895: 14 ; Distant, 1900: 428 ; Kirkaldy, 1909: 158 ; Campos, 1919: 52 ; 1925: 52 ; Froeschner, 1981: 66 ; Fernandes et al., 2015: 512 ; Silva et al., 2017: 263 ; Silva et al. , 2018: 420 . Edessa helix . Lectotype male. Brit. Guyan. Schomburgk / nr 240/ helix n. Br. Guy. Schomb. ( MNKB ). Edessa helix . Paralectotype female. Same data ( MNKB ). Designated by Silva et al . 2017 . Diagnose. See Silva et al. (2017) . Additional material. BRAZIL , Mato Grosso : 1♀ , Rio Caraguata , 16-VII-1950 , F. Plauman ( Edessa (Edessa) urotaurus Breddin — Det. J. C. Lutz ) ( USNM ) . BOLIVIA , Santa Cruz : 1♀ , Buena Vista , 1–2-V-2004 , Wappes & Cline ( JEE ) . Comments. This species resembles Edessa (E.) helicoceras , but the humeral angle of the former is straight and less slopping frontwards than the later ( Fig. 26 E,F ). Also, ventral side of E. (E.) helix has narrow dark bands on intersegmental area and pseudosutures ( Fig. 26 F ). Distribution ( Fig. 32 A,B ): See Silva et al. (2017) ; BOLIVIA : Santa Cruz .