Edessa stalii Distant 1881
Creators: name: Campos, Breno Batista
name: Nunes, Benedito Mendes
name: Bitar, Murilo Victor Silva
name: Fernandes, Jose Antonio Marin
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Pentatomidae
Edessa
Edessa stalii

description: Edessa stalii group
(Figs. 1–4 A–D; 5A–H; 6)
Diagnosis. Dorsal surface green, corium with a dark brown stripe adjacent to clavus (Fig. 5A). Ventral surface greenish yellow to green (Fig. 5D). Antennae mostly black (Fig. 5G). Anterolateral margins of pronotum orange or yellow (Fig. 5A,E). Punctation of pronotum sparser than punctation of scutellum. Humeral angles acute and poorly developed (Fig. 5C). Part of the corium weakly pigmented and translucent (Fig. 5C). Metasternal process elevated anteriorly; anterior bifurcation arms divergent, short, receiving only fourth rostral segment (Fig. 5D). Apex of each connexival segment with a small black tooth. Pygophore (pyg) open in caudal view, leaving parameres (pa) completely exposed (Fig. 2A); inner side of each posterolateral angle (pla) tumid or tumescent just below the angle (Fig. 3B). Gonocoxites 8 (gc8) with posterior margins strongly excavated, not touching laterotergites 9 (la9) and gonocoxites 9 (gc9) in most of its extension (Fig. 1D). Gonocoxites 9 with a median ridge (Fig. 3D).
Description. Head. Dorsal surface without spots (Fig. 5C). Mandibular plates slightly transversely ridged, longer than tylus and contiguous in front of it, apex curved ventrally. Antennal segment II almost equal in length to III, except in Edessa translucida sp. n. and Edessa bryoviridis sp. n.; IV and V with more setae than the previous segments. Bucculae narrow, subrectangular and enclosing first rostral segment (Fig. 5D). Rostrum elongate, yellowish, setose with a black spot on apex (Fig. 5F).
Thorax. Pronotum trapezoidal, wider than long; anterolateral angles armed each with a small tooth. Pronotum with shallow brown punctation, except on cicatrices (Fig. 5A,C). Scutellum with punctation dark, sparser on disc, more concentrated posterolaterally. Membrane of hemelytra light brown to dark brown (Fig. 5C,E). Evaporatorium whitish, matte (Fig. 5B,F). Peritremes ruga-like, each reaching 2/3 of distance from scent gland ostiole to lateral margin of thorax. Legs yellowish, distal margin of femora with three pairs of tiny black teeth (Fig. 5D,F,H).
Abdomen. Dorsal surface light green. Connexivum completely green with shallow and concolorous punctation concentrated in two lateral excavations (Fig. 5C,E,G). Ventral surface lacks brown stripes (Fig. 5D,F). Spiracles elliptical. One trichobothrium in line with spiracles and the other laterad.
Male (Figs. 1–4 A–C). Pygophore trapezoidal in dorsal view, open dorsoposteriorly (Fig. 1A). Dorsal rim (dr) strongly excavated, superior process of genital cup (gc) visible in dorsal view (Fig. 3A). Superior process of the genital cup slightly curved, posterior surface concave (Fig. 2B). Proctiger (proc) with lateral excavations covered with dense short setae (Figs. 2B; 4B); dorsal surface shiny distally delimited by brown carina (Fig. 1B); posterior surface subtriangular (Fig. 1B).
Female (Figs. 1–4D). Gonocoxites 8 projected over laterotergites 9 (Fig. 1D). Gonocoxites 9 trapezoidal and laterally compressed (Fig. 4D). Laterotergites 8 (la8) distally with a black spine; surpassing seventh segment of abdomen (Fig. 4D). Lateral sides of gonocoxites 9, distal part of gonocoxites 8, and base of laterotergites 9 excavated and curved, forming an obtuse angle with remaining of gonocoxites 8. Laterotergites 9 with apex acute below the level of laterotergites 8 (Fig. 2D).
Comments. Based on the revision of Hypoxys Amyot & Serville (Nunes et al. 2020), we conclude that the E. stalii group does not belong to this genus because the specimens are much smaller than specimens of Hypoxys; antennomeres black with white or yellowish rings (uniformly yellow to brown in Hypoxys); punctation of pronotum and scutellum light brown and similar in size (punctation not uniform in size or color, usually presenting large punctures on dark spots in Hypoxys); apices of humeral angles not dark (black or brown in Hypoxys); disc of corium translucent (never translucent in Hypoxys); pygophore remarkably open in caudal view leaving parameres completely visible (parameres partially visible in Hypoxys); gonocoxites 8 with posterior margin not touching laterotergites 9 and gonocoxites 9 in most of its extension (gonocoxites 8 always touching laterotergites 9 and gonocoxites 9 in Hypoxys).
Distribution (Fig. 6). MEXICO: Chiapas; GUATEMALA: Guatemala, Escuintla; EL SALVADOR: San Salvador, La Libertad; COSTA RICA: Guanacaste, Puntarenas, Cartago; PANAMA: Chiriquí.
description: Published as part of Campos, Breno Batista, Nunes, Benedito Mendes, Bitar, Murilo Victor Silva & Fernandes, Jose Antonio Marin, 2020, Description of a new group of species of Edessa Fabricius, 1803 (Hemiptera: Pentatomidae: Edessinae) with translucent spot on hemelytra, pp. 131-142 in Zootaxa 4810 (1) on pages 132-133, DOI: 10.11646/zootaxa.4810.1.7, http://zenodo.org/record/3937134