Edessa (Edessa) atricornis, Mendonça & Silva & Fernandes, 2023

Mendonça, Maria Thayane Da Silva, Silva, Valéria Juliete Da & Fernandes, José Antônio Marin, 2023, Description of fifty-one new species and new taxonomic arrangement for the E. sexdens group of the subgenus Edessa (Heteroptera, Pentatomidae, Edessinae, Edessa), Zootaxa 5372 (1), pp. 1-128 : 16

Edessa (Edessa) atricornis sp. n.

( Figs. 4 , 55 A–B , 72 )

Etymology. The name refers to the black humeral angles (L. atra, black; L. cornu, horn).

Material examined. Holotype male. FRENCH GUIANA: route de Kaw, pk 33, 3-IV-1984, G. Tavakilian; piège lumineux MNHN ( EH) 25712 ( MNHN).

Paratype. VENEZUELA, Bolívar : 1♀, El dorado, Santa Elena km 107 520m, 24-VIII-1957, C. J. Rosales & F. Fernandes ( UFRGS) ; 1♀, El dorado, Santa Elena km 107 520m, 18-VIII-1957, C. J. Rosales & F. Fernandes ( UFRGS) . FRENCH GUIANA: 1♀, II-1985, same data as holotype MNHN ( EH) 25713 ( MNHN); 1 ♁, Matoury , La Désirée contrefort du Mont Matoury, 15-VIII-2014, SEAG ( RLC) ; 1 ♀, Régina Nouragues , 22-IX-2009, SEAG ( RLC) .

Measurements (n= 6). Total length: 19.4–20.6; head length: 1.5–2.0; head width: 3.5; pronotum length: 4.0– 4.5; pronotum width: 14.5–16.2; scutellum length: 9.0–10.1; scutellum width: 6.5–7.3; abdominal width: 10.3–11.5; length antennomeres: I: 1.0; II: 1.6–1.8; III: 1.6–2.0; IV: 4.0–4.8; V: 5.0.

Diagnosis. Large (19.4–20.6 mm). Dorsal body surface olive green ( Fig. 55 A ). Ventral surface dark yellow to light brown with faded brown transversal bands on thorax and abdomen ( Fig. 55 B ). Head densely punctured ( Fig. 55 A ). Antennae reddish brown ( Fig. 55 A–B ). Rostral segment I yellow the others reddish ( Fig. 55 B ). Pronotum with brown punctures ( Fig. 55 A ). Humeral angles as long as wide, projected laterally; apex with black spot expanding over the pronotal disc in dorsal view and restricted to the angles in ventral view; gently curved ( Fig. 55 A–B ). Scutellum with brown punctures; apex not reaching the end of coria ( Fig. 55 A ). Coria with all veins yellow; presence of the black punctures near costal vein ( Fig. 55 A ). Connexival segments with concavities slightly covered by elliptic dark brown spots separated by small yellow spot ( Fig. 55 A ); dark spots not extending ventrally ( Fig. 55 B ). Posterolateral angles of connexivum with apices brown ( Fig. 55 A ). Ventral surface, thorax with brown bands; dark band of propleura covering 1/3 of the width of the sclerite ( Fig. 55 B ). Proepisternum with dark band. Evaporatorium concolorous with the surrounding surface; peritreme straight ( Fig. 55 B ). Metasternal process ( Fig. 4 G ) with arms of anterior bifurcation apex straight and laterally expanded at apex; anterior bifurcation somewhat excavated receiving fourth rostral segment. Legs with tibiae and tarsi reddish, remaining yellow ( Fig. 55 B ). Abdomen with spine of segment III rounded ( Fig. 55 B ). Intersegmental areas covered by narrow faded brown bands with smudged margins, not reaching lateral margin ( Fig. 55 B ). Pseudosutures smoky brown with irregular margins ( Fig. 55 B ). Median longitudinal brown band incomplete, restricted to the segment VII ( Fig. 55 B ). Trichobothria one in line with spiracle and the other laterad. Posterolateral angles of segment VII almost level with apices of laterotergites IX ( Fig. 4 F ). Male genitalia, dorsal side of the pygophore with a smudged brown area occupying less than 1/3 of the surface ( Fig. 4 A–B ). Posterolateral angles of pygophore slightly developed ( Fig. 4 A ). Superior processes of the genital cup long, tapering, thick, concave in posterior view, continuing ventrally in a well-developed, enlarged and distally truncated process ( Fig. 4 A–B, D ). Diaphragm with contrasting yellow spot ( Fig. 4 D–E ). Parameres with black margins; anterior lobe expanded, triangular; dorsal lobe small, acuminated and not curved laterally; posterior lobe rounded ( Fig. 4 D–E ). Proctiger, posterior face hexagonal ( Fig. 4 D–E ). Ventral surface, with black punctures, deep, distributed in the anterior half ( Fig. 4 C ). Ventral rim sparsely setose ( Fig. 4 C ); with expansions developed, acuminated, concolorous with the surrounding surface, expansions almost level with posterolateral angles ( Fig. 4 C ). Female genitalia, valvifers VIII with dark punctures; posterior margin acuminated, projected over laterotergites IX; sutural margins contiguous, distally excavated in a small and shallow horseshoelike excavation; tumescence covered by brown spot. Laterotergites VIII with dark brown outer lateral margins. Laterotergites IX with apices acuminate clearly exceeding the mediotergite VIII ( Fig. 4 F ).

Comments. The species Edessa (E.) atricornis sp. n. resembles E.(E.)fuliginocornis sp. n., E.(E.) illuminocornis sp. n., and E. (E.) maurocornis sp. n. They share the coria with yellow veins, and the connexival segments with elliptical dark spots not extending to the ventral side of the abdomen. This species can be separated from the others mainly by the characteristics of the punctuation in the head, by the dark lines in the ventral surface of thorax and abdomen, and by the genitalia. In E. (E.) atricornis sp. n. the head is densely punctuated, while in the others it is not; among these species, E. (E.) maurocornis sp. n. has darker, marked bands on the ventral side of the body; among the females, E. (E.) atricornis sp. n. has the least developed angles of the valvifers VIII; the males can be distinguished by the shape of the parameres.

Distribution ( Fig. 72 ): VENEZUELA: Bolívar; FRENCH GUIANA.

Figures

FIGURE 4. A–G. Edessa (E.) atricornis sp. n.: A–E, pygophore in dorsal, dorsolateral, ventral, posterior and posterolateral views, respectively; F, genital plates; G, metasternal process. mt8—mediotergite VIII. Scale= 1 mm.

FIGURE 55. A–F. Dorsal and ventral surface: A–B, Edessa (E.) atricornis sp. n.; C–D, Edessa (E.) brevicornis sp. n.; E–F, Edessa (E.) brevihumeralis sp. n. Scale= 5 mm.

FIGURE 72. Distribution map of the species.