Edessa (E.) alces Erichson, 1848

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), Zootaxa 5240 (1), pp. 1-63 : 10-12

publication ID	https://doi.org/ 10.11646/zootaxa.5240.1.1
publication LSID	lsid:zoobank.org:pub:2FE467C1-EAC2-4E90-B673-CCE2CCA93C1D
DOI	https://doi.org/10.5281/zenodo.7871401
persistent identifier	https://treatment.plazi.org/id/03B487C0-FFC3-251A-FF47-C34DFAC4F9E6
treatment provided by	Plazi
scientific name	Edessa (E.) alces Erichson, 1848
status

Treatment

( Figs. 1 View FIGURE 1 , 24 A,B View FIGURE 24 , 31 A View FIGURE 31 )

Edessa alces Erichson, 1848: 610 ; Lethierry & Severin, 1893: 188; Kirkaldy, 1909: 154; Silva et al., 2018: 417 View Cited Treatment .

Edessa suturata Dallas, 1851: 324 ; Lethierry & Severin, 1893: 195; Kirkaldy, 1909: 165 syn. nov.

Edessa alces . Lectotype female. Br. Guy. Schomb. [British Guina Schomburgk] ( MNKB). Examined. Here designated.

Edessa alces . Paralectotypes. 3 females, same data ( MNKB) .

Edessa suturata . Lectotype male. B. Guiana ( BMNH). Examined.

Edessa suturata . Paralectotypes. 2 females same data ( BMNH). Here designated .

Material examined. PANAMA, Panama: 1 ♀, Panama City, Pq. Natural Metropolitano, 23-VII-1995, C. W. & L. B. O’Brien ( JEE) . TRINIDAD AND TOBAGO: 1♀, Trinidad, Mt. Harris , 1924, C. L. Withycombe ( BMNH) . VENEZUELA, Aragua: 1♀, El Limon, 8 - IX - 1955, F. Fernandez ( MIZA) ; 1♀, El Limon , 27-I-1966, F. Fernandez & E. Osuna ( MIZA) ; 1♁, El Limon , 27-IV-1966, M. Gelbes ( MIZA) ; 1♀, Carret, Maracay , Choroni AR, 30-XI-1951, Fernandez Y. & C. J. Rosales cols. ( MIZA) ; 1♀, Carret, Maracay , Choroni AR, 11-X-1951, Fernandez Y. cols. ( MIZA) ; 1♀, Cagua , 30-IX-1966, D. Villasmil & J. C. Marin ( MIZA) ; 1♀, Pozo Diablo, Maracay , 13-IV-1962, M. Gelbes ( MIZA) ; Carabobo: 3♀ 1♁, Yuma , 21-XI-1952, F. Fernandez Y. ( MIZA) ; Bolívar: 1♀, El Dorado, 25-VIII-1951, Fernandez Y. & Rosales cols. ( MIZA) ; Zulia: 3♀ 1♁, Sierra de Perija, Cajmera , 12-IV-1960 ( MHNS) ; 1♀, Sierra de Perija, Cajmera , 13-IV-1960 ( MHNS) ; 1♀, Kasmera , 19-IX-1961, Fernandez Y. & C. J. Rosales ( MIZA) ; 1♁, Kasmera , 22-IX-1961, Fernandez Y. & C. J. Rosales ( MIZA) ; 2♁ 1♀, Kasmera, Rio Yaza, Sierra de Perijo , 22- IX-1961, Fernandez Y. & C. J. Rosales ( MIZA) ; 2♀, Kasmera, Rio Yaza, Sierra de Perijo , 19-IX-1961, Fernandez Y. & C. J. Rosales ( MIZA) ; 1♀, Machiques Colón, Mayino , 9-X-1966, C. J. Rosales & A. D’Ascoli ( MIZA) ; 1♀, Maturaca , 6-IV-1964, J. Bechynne col. ( MIZA) ; 1♁, No date, Demerara Harper , 1905, Sharp coll. ( E. suturata Dallas, 1851 comp. W. type Fernandes, JAM 2019) ( BMNH) .

Measurements (n= 29). Total length: 17.6–21.4; head length: 1.5–2.2; head width: 3.0–3.6; pronotum length: 3.5–4.5; pronotum width: 11.3–15.1; scutellum length: 7.7–10.0; scutellum width: 6.0–7.7; abdominal width: 10.0– 12.0; length antennomers: I: 1.0–1.2; II: 1.5–2.0; III: 2.0–2.3; IV: 4.3–5.0; V: 4.9.

Diagnosis. Specimens large (17.6–21.4 mm). Dorsal surface of the body olive green ( Fig. 24 A View FIGURE 24 ). Ventral surface brown with transversal black lines on thorax and abdomen ( Fig. 24 B View FIGURE 24 ). Head with black punctures. Antennae reddish brown ( Fig. 24 A View FIGURE 24 ). Pronotum with punctures brown to black ( Fig. 24 A View FIGURE 24 ); anterolateral margin and cicatrices with black punctures. Humeral angles short (1,33 times wider than long) ( Fig. 24 A View FIGURE 24 ); apices concolorous with surface ( Fig. 24 A View FIGURE 24 ). Scutellum with punctures brown ( Fig. 24 A View FIGURE 24 ); apex not reach end of corium ( Fig. 24 A View FIGURE 24 ). Corium with all veins concolorous with surface ( Fig. 24 A View FIGURE 24 ). Posterolateral angles of connexivum with apices black ( Fig. 24 A View FIGURE 24 ); connexival segments concavities entirely covered by subrectangular black spots and separated by a large yellow median spot ( Fig. 24 A View FIGURE 24 ), dark spots extending ventrally, subrectangular ( Fig. 24 B View FIGURE 24 ). Ventral surface. Thorax with black stripes ( Fig. 24 B View FIGURE 24 ); dark stripe of the propleuron covering 2/3 of the width of the sclerite ( Fig. 24 B View FIGURE 24 ). Evaporatorium concolorous with thorax ( Fig. 24 B View FIGURE 24 ). Metasternal process ( Fig. 1 G View FIGURE 1 ) with anterior apex straight and laterally well expanded, margin acuminated; anterior face somewhat excavated; anterior bifurcation receiving fourth rostral segment. Legs brown (24 B). Abdomen with spine of third segment acuminated ( Fig. 25 B View FIGURE 25 ). Intersegmental areas black, not reaching ventral spots of connexivum ( Fig. 24 B View FIGURE 24 ). Pseudosutures solid black, margin well defined ( Fig. 24 B View FIGURE 24 ). Median longitudinal brown band incomplete and restricted to the last segment ( Fig. 24 B View FIGURE 24 ). Trichobotria one in line with spiracle and the other laterad. Posterolateral angles of segment VII not reaching level of the apices of laterotergites IX in females ( Fig. 1 F View FIGURE 1 ). Male genitalia, posterolateral angle of the pygophore developed ( Fig. 1 A View FIGURE 1 ). Superior process of genital cup laminar, thick, rectangular; flattened and coarse in posterior view, continuing ventrally in a crenulated high carina ending in a small dentiform projection ( Fig. 1 B,E View FIGURE 1 ). Diaphragma with contrastingly yellow spot ( Fig. 1 B View FIGURE 1 ). Ventral rim setose with medial tuft ( Fig. 1 C View FIGURE 1 ). Female genitalia, laterotergites VIII with two small dark spots on outer lateral margins ( Fig. 1 F View FIGURE 1 ).

Male genitalia ( Fig. 1 A–E View FIGURE 1 ): Parameres with black margin, rounded anterior lobe slightly developed; dorsal lobe large and subrectangular; posterior lobe rounded and rectangular with curved apex ( Figs. 1 D,E View FIGURE 1 ). Proctiger with bottle-shaped posterior face ( Fig. 1 D,E View FIGURE 1 ). Ventral rim with expansions slightly developed and concolorous with surface ( Fig. 1 C View FIGURE 1 ).

Female genitalia: Valvifers VIII with dark punctures; inner margins contiguous brown and not divergent; distal margin brown and arched. Laterotergites IX with apices acuminate passing the sclerite uniting laterotergites VIII ( Fig. 1 F View FIGURE 1 ).

Comments. The Edessa (E.) alces shares with E. (E.) congrua , E. (E.) sexdens and E. (E.) urus the humeral angle concolorous with pronotum ( Fig. 24 A View FIGURE 24 ), little developed and not globose ( Fig. 24 A View FIGURE 24 ); and connexivum with dark spots on each segment ( Fig. 24 A View FIGURE 24 ). Edessa (E.) alces and Edessa (E.) sexdens have black punctures on anterolateral margins of pronotum, but in E. (E.) sexdens this punctures are more conspicuous than in E. (E.) alces ( Fig. 29 C View FIGURE 29 ). Additionally, both species can be separated by the humeral angle more robust and curved backwards in E. (E.) alces (straight and smaller in E. (E.) sexdens — Fig. 29 C View FIGURE 29 ) ( Fig. 24 A View FIGURE 24 ). E. (E.) alces ( Fig. 24 A View FIGURE 24 ) can be easily separated form E. (E.) congrua ( Fig. 24 E View FIGURE 24 ) by the humeral angle curved backwards and less developed than in E. (E.) congrua who has the angle more robust and directed laterally. E. (E.) alces ( Fig. 24 A View FIGURE 24 ) can be separated from E. (E.) urus ( Fig. 29 E View FIGURE 29 ) also by the shape and size of the humeral angles more developed in E. (E.) alces than in E. (E.) urus .