Edessa (Edessa) nigriclava Walker 1868
Creators: name: Mendonça, Maria Thayane Da Silva
name: Silva, Valéria Juliete Da
name: Fernandes, José Antônio Marin
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Pentatomidae
Edessa
Edessa nigriclava

description: Edessa (E.) nigriclava Walker, 1868
(Figs. 15, 28 A,B, 30 A)
Edessa nigriclava Walker, 1868: 446; Lethierry & Severin, 1893: 192; Kirkaldy, 1909: 161; Silva et al., 2018: 422.
Edessa nigriclava. Lectotype male. Amazon region (BMNH). Examined.
Edessa nigriclava. Paralectotype female. Same data (BMNH).
Material examined. VENEZUELA, Bolívar: 1♁, Caripito, 18-VII-1953, C. J. Rosales & J. R. Requena coll. (MIZA). BRAZIL, Pará: 1♁ 1♀, Óbidos, VI-1978, A. C. Domingos (Compared to the type — Fernandes JAM, 1999) (MNRJ); 1♁, Óbidos, V-1954, J. Brazillino coll. (MNRJ — Campos Seabra Collection); 1♁, Óbidos, XII-1953, J. Brazillino coll. (MNRJ — Campos Seabra Collection).
Measurements (n= 5). Total length: 15.8–16.8; head length: 1.7–1.8; head width: 3.0–3.1; pronotum length: 3.2–3.5; pronotum width: 10.9–11.4; scutellum length: 7.4–7.7; scutellum width: 5.7–6.0; abdominal width: 8.7– 8.8; length antennomers: I: 0.9–1.0; II: 1.2–1.4; III: 1.5–1.6; IV: 3.5–0.0; V: 3.9–0.0.
Diagnosis. Specimens large (15.8–16.8 mm). Dorsal surface olive green (Fig. 28 A). Ventral surface dark yellow to green with transversal black lines on thorax and abdomen (Fig. 28 B). Antennae reddish brown (Fig. 28 A). Pronotum with punctures concolorous with surface to brown (Fig. 28 A); anterolateral margin and cicatrices with brown punctures (Fig. 28 A). Humeral angles short (1,4 times wider than long) (Fig. 28 A), apices black (Fig. 28 A); humeral angle black spot restricted to the angle in dorsal and ventral views (Fig. 28 A,B). Scutellum with punctures brown (Fig. 28 A); apex not reach end of corium (Fig. 28 A). Corium with all veins concolorous with surface (Fig. 28 A). Posterolateral angles of connexivum with apices concolorous with surface (Fig. 28 A); connexival segments without spot and flat (Fig. 28 A). Ventral surface. Thorax with black stripes (Fig. 28 B); dark stripe of the propleuron covering 1/3 of the width of the sclerite (Fig. 28 B). Proepisternum with dark stripe (Fig. 28 B). Evaporatorium concolorous with thorax (Fig. 28 B). Metasternal process (Fig. 15 G) with anterior apex rounded and laterally well expanded, margin rounded; anterior face somewhat excavated; anterior bifurcation receiving fourth rostral segment. Legs brown (Fig. 28 B). Abdomen with spine of third segment acuminated (Fig. 28 B). Intersegmental areas black not reaching lateral margin (Fig. 28 B). Pseudosutures partially covered by superficial black stripe (Fig. 28 B). Median longitudinal brown band restricted to last segment (Fig. 28 B). Trichobotria one in line with spiracle and the other laterad. Posterolateral angles of segment VII not reaching the level of apices of laterotergites IX in females (Fig. 15 F). Male genitalia, posterolateral angle of pygophore slightly developed (Fig. 15 A). Superior process of genital cup laminar, rectangular, thick, flattened and coarse in posterior view, continuing ventrally in a crenulated high carina (Fig. 15 B,E). Ventral rim with long setae, but without a lateral tuft (Fig. 15 C). Female genitalia, laterotergites VIII without dark band on outer lateral margins (Fig. 15 F).
Male genitalia (Fig. 15 A–E): Parameres with black margin; anterior lobe subtriangular and rounded; dorsal lobe rounded and subtriangular, curved apex; posterior lobe subtriangular and rounded (Fig. 15 B,D,E). Proctiger with subelliptical posterior face (Fig. 15 D,E). Ventral rim with expansions undeveloped and concolorous with surface (Fig. 15 C).
Female genitalia: Valvifers VIII with dark punctures; inner margins contiguous, with brown band and not divergent; distal margin with a brown band and arched. Laterotergites IX with apices acuminate passing the sclerite uniting laterotergites VIII (Fig. 15 F).
Comments. The Edessa (E.) nigriclava is similar to E. (E.) gentilitia and E. (E.) phoenicopus. See Comments of E. (E.) gentilitia.
Distribution (Fig. 30 A): VENEZUELA: Bolívar; BRAZIL: Pará.
description: Published as part of Mendonça, Maria Thayane Da Silva, Silva, Valéria Juliete Da & Fernandes, José Antônio Marin, 2023, Diagnose of the nominal subgenus of Edessa and description of the E. sexdens group (Heteroptera, Pentatomidae, Edessinae), pp. 1-63 in Zootaxa 5240 (1) on page 37, DOI: 10.11646/zootaxa.5240.1.1, http://zenodo.org/record/7639547