Edessa (Edessa) cornicula sp. n.

(Figs. 8, 56 C–D, 73)

Etymology. The name refers to the size and development of the humeral angles (L. cornu, horn; cornicula, dim).

Material examined. Holotype female. PERU, Loreto: Estiron, Rio Ampiacu, 15–22-V-1966, Malkin leg. (MZUSP).

Measurements (n= 1). Total length: 22.3; head length: 1.5; head width: 3.5; pronotum length: 4.5; pronotum width: 14.2; scutellum length: 10.3; scutellum width: 7.5; abdominal width: 12.8; length antennomeres: I: 1.5; II: 2.0; III: 2.3; IV: 4.8.

Diagnosis. Large (22.3 mm). Dorsal body surface olive green (Fig. 56 C). Ventral surface dark yellow to brown with transversal brown bands on thorax and abdomen (Fig. 56 D). Antennae yellowish (Fig. 56 C–D). Pronotum with brown punctures (Fig. 56 C); anterolateral margin with a yellow band extending from the humeral angles to the head; anterolateral margin and cicatrices with brown punctures. Humeral angles very short (2.0 times wider than long); apex concolorous with the surrounding surface, slightly acuminate and curved backwards (Fig. 56 C). Scutellum with brown punctures; apex not reaching the end of coria (Fig. 56 C). Coria with all veins concolorous with the surrounding surface (Fig. 56 C). Connexival segments with concavities entirely covered by subrectangular black spots separated by a large dark yellow median spot (Fig. 56 C); black spots extending ventrally, subrectangular (Fig. 56 D). Posterolateral angles of connexivum with apices black (Fig. 56 C). Ventral surface, thorax with brown bands; dark band of the propleura covering 2/3 of the width of the sclerite (Fig. 56 D). Evaporatorium concolorous with the surrounding surface; peritreme straight (Fig. 56 D). Metasternal process (Fig. 8 B) with arms of anterior bifurcation straight, laterally well expanded at apex; anterior bifurcation broadly excavated receiving fourth rostral segment. Legs yellowish (Fig. 56 D). Abdomen with spine of segment III rounded (Figs. 8 B; 56 D). Intersegmental areas covered by narrow smudged brown bands with well-defined margins, reaching the lateral spots (Fig. 56 D). Pseudosutures concolorous with the surrounding surface (Fig. 56 D). Median longitudinal area spotless (Fig. 56 D). Trichobothria both parallel to the spiracle. Posterolateral angles of segment VII exceeding the level of apices of laterotergites IX (Fig. 8 A). Male genitalia. Unknown. Female genitalia, valvifers VIII with concolorous with the surrounding surface punctures; sutural margins contiguous; posterior margin subrectangular with small and shallow U-shaped excavation delimited by small rounded projections. Laterotergites VIII without dark band. Laterotergites IX with apices acuminate and level with mediotergite VIII (Fig. 8 A).

Comments. Edessa (E.) cornicula sp. n. resembles Edessa (E.) urus Erichson, 1848 (see Mendonça et al., 2023, Figs. 23 F, 29 E–F). Both species share the humeral angles concolorous with the surrounding surface, short and curved; body ventrally with intersegmental areas brown. Both species can be separated by characteristics of the genitalia, in E. (E.) cornicula sp. n. the posterior margin of the valvifers VIII is subrectangular and apices of the laterotergites IX level with mediotergite VIII, while in E. (E.) urus the posterior margin of the valvifers VIII is clearly arched and the apices of the laterotergites IX passing the mediotergite VIII.

Distribution (Fig. 73). PERU: Loreto.