Euschistus (Euschistus) corcovacitus Rolston, 1971

Bianchi, Filipe Michels, Barão, Kim Ribeiro & Grazia, Jocelia, 2017, Review of the sulcacitus group of Euschistus (Pentatomidae: Pentatominae: Carpocorini) with description of the internal female genitalia and a new species, Zootaxa 4362 (3), pp. 348-358 : 353

publication ID	https://doi.org/10.11646/zootaxa.4362.3.2
publication LSID	lsid:zoobank.org:pub:852AFFC6-42E7-4C52-A5B9-5FFA4E6759CC
DOI	https://doi.org/10.5281/zenodo.5669917
persistent identifier	https://treatment.plazi.org/id/6033878D-F94C-CC4F-0BD9-FCF02C4BC703
treatment provided by	Plazi (2017-12-06 08:27:04, last updated 2024-11-27 07:51:26)
scientific name	Euschistus (Euschistus) corcovacitus Rolston, 1971
status

Treatment

( Figs 1 View FIGURES 1–5 , 6–8 View FIGURES 6–20 , 22 View FIGURES 21–26 , 27–29 View FIGURES 27–41 , 45–47 View FIGURES 45–59 , 60 View FIGURES 60–64 )

Male genitalia: Pygophore trapezoidal. Dorsal rim uniformly concave in dorsal view ( Fig. 6 View FIGURES 6–20 ); extension of dorsal rim long, sinuosity deep; superior process of dorsal rim tooth-like. Ventral rim slightly sinuose, convex medially in ventral view ( Fig. 8 View FIGURES 6–20 ). In posterior view, ventral rim protuberant mesially ( Fig. 7 View FIGURES 6–20 ). Paramere: margin connecting basal and apical processes deeply concave; apical process somewhat truncate at apex; middle process not developed ( Fig. 22 View FIGURES 21–26 ).

Female genitalia: Posterior margin of gonocoxites VIII concave; posterolateral margin of gonocoxites VIII projected posteriorly, surpassing middle of gonocoxites IX. Gonocoxites IX at least three times wider than long; posterior margin of gonocoxites IX slightly concave; postero-lateral angles slightly acute ( Fig. 45 View FIGURES 45–59 ). Laterotergites IX surpassing dorsal band that unites laterotergites VIII in posteroventral view. Distal region of ductus receptaculi proximalis dilated. Basal three-fourths of pars intermedialis sclerotized ( Fig. 60 View FIGURES 60–64 ).

References

Rolston, L. H. (1971) Four new species of Euschistus from Mexico and Central America. Journal of the Kansas Entomological Society, 44, 483 - 491.

Figures

FIGURES 1–5. Dorsal view of representative specimens of sulcacitus group species. 1, Euschistus (Euschistus) corcoVacitus; 2, Euschistus (Euschistus) olacitus; 3, Euschistus (Euschistus) palacitus; 4, Euschistus (Euschistus) sulcacitus; 5, Euschistus (Euschistus) tacitus sp. nov., holotype. Scale bars: 2 mm.

FIGURES 6–20. Dissected and macerated pygophore of species of sulcacitus group. Pygophore in dorsal (6, 9, 12, 15, 18), posterior (7, 10, 13, 16, 19), and ventral (8, 11, 14, 17, 20) views. 6–8, Euschistus (Euschistus) corcoVacitus; 9–11, Euschistus (Euschistus) olacitus; 12–14, Euschistus (Euschistus) palacitus; 15–17, Euschistus (Euschistus) sulcacitus; 18–20, Euschistus (Euschistus) tacitus sp. nov.. dr, dorsal rim; mp, median projection; par, paramere; slvr, superior layer of ventral rim; spdr, superior process of dorsal rim; vr, ventral rim. Scale bars: 0.25 mm.

FIGURES 21–26. Right paramere of species of sulcacitus group. 21, schematic drawing of paramere indicating its regionalization; 22, Euschistus (Euschistus) corcoVacitus; 23, Euschistus (Euschistus) olacitus; 24, Euschistus (Euschistus) palacitus; 25, Euschistus (Euschistus) sulcacitus; 26, Euschistus (Euschistus) tacitus sp. nov. app, apical process of paramere; bpp, basal process of paramere; cr, crown; st, stem. Scale bars: 0.25 mm.

FIGURES 27–41. Phallus of species of sulcacitus group. Phallus in dorsal (27, 30, 33, 36, 39), ventral (28, 31, 34, 37, 40) and lateral (29, 32, 35, 38, 41) views. 27–29, Euschistus (Euschistus) corcoVacitus; 30–32, Euschistus (Euschistus) olacitus; 33–35, Euschistus (Euschistus) palacitus; 36–38, Euschistus (Euschistus) sulcacitus; 39–41, Euschistus (Euschistus) tacitus sp. nov. Scale bars: 0.25 mm.

FIGURES 45–59. Female genital plates of species of sulcacitus group. Genital plates in posterior (45, 48, 51, 54, 57) and postero-ventral (45, 46, 49, 50, 52, 53, 55, 56, 58, 59) views. 45–47, Euschistus (Euschistus) corcoVacitus; 48–50, Euschistus (Euschistus) olacitus; 51–53, Euschistus (Euschistus) palacitus; 54–56, Euschistus (Euschistus) sulcacitus; 57–59, Euschistus (Euschistus) tacitus sp. nov.. gc, gonocoxites; la, laterotergites. Scale bars: 1 mm.

FIGURES 60–64. Female internal genitalia of species of sulcacitus group. 60, Euschistus (Euschistus) corcoVacitus; 61, Euschistus (Euschistus) olacitus; 62, Euschistus (Euschistus) palacitus; 63, Euschistus (Euschistus) sulcacitus; 64, Euschistus (Euschistus) tacitus sp. nov.. Insets are the capsula seminalis. aaf, anterior anular flange; cs, capsula seminalis; dr, ductus receptaculi; g, gonapophysis; gc, gonocoxites; la, laterotergites; paf, posterior anular flange; pi, pars intermedialis; rs, ring sclerites; tvi, thickening of vaginal intima; va, vesicular area. Scale bars: 0.5 mm.