Edessa fuscolimbata, Bitar & Mendonça & Fernandes, 2023

Bitar, Murilo Victor Silva, Mendonça, Maria Thayane Da Silva & Fernandes, José Antônio Marin, 2023, Description of seven new species of Edessa Fabricius, 1803 from Central America (Heteroptera, Pentatomidae, Edessinae), Zootaxa 5278 (3), pp. 578-600 : 586-588

Edessa fuscolimbata sp. n.

( Figs. 4; 8 G, H; 10 A)

Etymology. The name refers to the black band on the anterolateral margin of the pronotum (L. Fusco - black; L. limbus - border).

Material examined. Holotype male. COSTA RICA, Heredia: 1♁, Estación Biológica La Selva , 50–150 m, 10º26’N, 84º01W, 4–6/IV/2003, E. Riley, at lights, TAMU-ENTO X 0719945, TAMU Out. 2011 ( TAMU).

Paratype. COSTA RICA, Guanacaste: 1♁, 18/V/1932, A. Alfaro, Washington 08/2014 ( USNM) .

Measurements (n= 2): antennomeres length: 1st: 0.54–0.61mm; 2nd: 1.42–1.44mm; 3rd: 1.27–1.31mm; 4th: 1.98–2.06mm; 5th: 2.08mm; head length: 1.25–1.32mm; head width: 2.23–2.26mm; pronotal length: 2.19–2.26mm; pronotal width: 6.37–6.73mm; scutellum length: 4.77–5.16mm; scutellum width: 3.70–3.93mm; abdominal width: 6.00– 6.18mm; total length: 11.11–11.71mm.

Diagnosis: body probably dorsally green except variegated brown corium ( Fig. 8 G). Antennae black, basal portion of 3rd, 4th and 5th antennomeres whitish ( Fig. 8 G). Anterolateral margin of pronotum black ( Fig. 8 G). Pronotum, Scutellum and corium with black punctures ( Fig. 8 G). Black minute longitudinal callosity adjacent to humeral angles ( Fig. 8 G). Scutellum with black distal spot ( Fig. 8 G). Corium with black longitudinal stripe on basal portion of lateral margin ( Fig. 8 G); also with diffuse whitish basal and subdistal spots ( Fig. 8 G). Last connexival segment with distal third black ( Fig. 8 G). Ventral surface: pale yellow with transversal, narrow, incomplete and faded brown stripes on abdomen ( Fig. 8 H); thorax uniformly and densely punctured, punctures dark ( Fig. 8 H). Anterior bifurcation of the metasternal process with arms very short, narrow, apices rounded ( Fig. 8 H). Male genitalia: pygophore trapezoidal ( Fig. 4 A, B). Superior process of the genital cup pedunculated, small, subrectangular ( Fig. 4 C, D). Parameres with anterior lobe elliptical ( Fig. 4 C, D); posterior lobe long, narrow and laterally curved ( Fig. 4 C, D). Proctiger laterally excavated ( Fig. 4 C, D); posterior face subtriangular with dorsal part broad and slightly swollen ( Fig. 4 C). Ventral rim with median notch broad and shallow ( Fig. 4 B); expansions developed ( Fig. 4 B).

Description: head: clypeus and jugae, slightly ridged. Bucculae subtriangular, almost completely harboring first labial segment. Thorax: dorsal surface: pronotum with punctures sparse, irregularly distributed ( Fig. 8 G). Anterior margin of pronotum with subtle row of punctures ( Fig. 8 G). Humeral angle with black spot at the apex ( Fig. 8 G); short, about as long as the width of an eye ( Fig. 8 G). Scutellum with punctures sparse on anterior half and dense on lateral margins and posterior half ( Fig. 8 G). Clavus with yellowish line adjacent to corium ( Fig. 8 G). Membrane translucent, slightly dark ( Fig. 8 G). Ventral surface: prothorax–mesothorax without dark stripes ( Fig. 8 H). Peritreme ruga-like, reaching 4/5 of the distance between ostiole of the scent gland and lateral margin of metapleuron ( Fig. 8 H). Metasternal process delicate, anterior arms slightly divergent, anterior bifurcation receiving only part of fourth rostral segment ( Fig. 8 H). Abdomen: dorsal surface: posterolateral angles of connexival segments with tiny distal black spot ( Fig. 8 G). Male genitalia: dorsal rim brown and convex medially ( Fig. 4 A). Posterolateral angles slightly developed, gently excavated on inner face ( Fig. 4 A); apex coarse ( Fig. 4 A). Ventral rim with expansions slightly tumid and laterally curved ( Fig. 4 B). Female genitalia: unknown.

Differential diagnosis: Edessa fuscolimbata sp. n. has distinctive black antennae ( Fig. 8 G), anterolateral margin of pronotum black ( Fig. 8 G), and apex of scutellum black ( Fig. 8 G), which are remarkable features among the species presented here. This species shares with E. fuscopunctata the black stripe on lateral margin of corium and black punctuation on dorsal surface ( Figs. 8 G, 9 A). The black stripe on corium is characteristic of the genus Hypoxys , possibly both species are related to this genus, but are not part of it due to genital characteristics.

Distribution ( Fig. 10 A): COSTA RICA: Guanacaste, Heredia.

Observation: Both available specimens of E. fuscolimbata show strong evidence of generalized depigmentation, possibly caused by inadequate conservation, which makes specimens prone to partially or completely lose their original color, usually becoming brown. Because of this, color information is presented speculatively in the description. However, it is possible to state that their corium is naturally brown, since most of it seems unaffected.