Edessa (E.) helicoceras Breddin, 1905

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 : 24-26

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.7639887
persistent identifier	https://treatment.plazi.org/id/03B487C0-FFDD-2508-FF47-C228FE1FFABB
treatment provided by	Plazi
scientific name	Edessa (E.) helicoceras Breddin, 1905
status

Treatment

( Figs. 8 View FIGURE 8 , 26 C,D View FIGURE 26 , 31 A View FIGURE 31 )

Edessa helicoceras Breddin, 1905: 26 ; Kirkaldy, 1909: 158.

Edessa helicoceras . Lectotype male. Esmeralda, Venezuela, Schirmer leg. ( SDEI). Examined. Designated by Gaedike (1971: 87).

Edessa helicoceras . Paralectotype female. Same data (SDEI).

Material examined. COLOMBIA: 1♁, Colombia ( UFPA) ; Bogotá: 1♀, Bogotá , 10-VI-1925, M. H. Nicefero (Comp W type — Seiler & Lutz 1957) ( USNM) . ECUADOR, Napo: 1♀, Tena , 18-VII-1982, R. Hensen (Comp. W Type — Fernandes JAM 1990) ( UFPA) .

Measurements (n= 3). Total length: 17.5–19.8; head length: 1.8–2.0; head width: 3.0–3.1; pronotum length: 3.9–4.2; pronotum width: 9.5–10.0; scutellum length: 7.9–8.8; scutellum width: 6.0–6.5; abdominal width: 8.8–9.8; length antennomers: I: 1.0–1.0; II: 1.7–1.8; III: 1.7–1.8.

Diagnosis. Specimens large (17.5–19.8 mm). Dorsal surface olive green ( Fig. 26 C View FIGURE 26 ). Ventral surface dark yellow to brown with transversal black lines on thorax and abdomen ( Fig. 26 D View FIGURE 26 ). Antennae reddish brown ( Fig. 26 C View FIGURE 26 ). Pronotum with punctures concolorous with surface to brown ( Fig. 26 C View FIGURE 26 ). Humeral angles long (1,75 times longer than wide) ( Fig. 26 C View FIGURE 26 ), apices black ( Fig. 26 C View FIGURE 26 ); humeral angle dark spot restricted to the angle in dorsal view, but in ventral view spot expanding into the propleuron ( Fig. 26 C,D View FIGURE 26 ). Scutellum with punctures concolorous with surface to brown ( Fig. 26 C View FIGURE 26 ); apex not reach end of corium ( Fig. 26 C View FIGURE 26 ). Corium with all veins concolorous with surface ( Fig. 26 C View FIGURE 26 ). Posterolateral angles of connexivum with apices brown ( Fig. 26 C View FIGURE 26 ); connexival segments without spot and flat ( Fig. 26 C View FIGURE 26 ). Ventral surface. Thorax with black stripes ( Fig. 26 D View FIGURE 26 ); dark stripe of the propleuron connected to the dark spot of the humeral angle ( Fig. 26 D View FIGURE 26 ). Proepisternum with dark stripe. Evaporatorium black ( Fig. 26 D View FIGURE 26 ). Metasternal process ( Fig. 8 G View FIGURE 8 ) with anterior apex straight and laterally well expanded, margin rounded; anterior face somewhat excavated; anterior bifurcation receiving fourth rostral segment; with black central spot. Legs with tibiae and tarsi darker than the rest ( Fig. 26 D View FIGURE 26 ). Abdomen with spine of third segment acuminated ( Fig. 26 F View FIGURE 26 ). Intersegmental areas covered by wide black band reaching lateral margin; band connected to the pseudosutures by black spots that also cover spiracles ( Fig. 26 D View FIGURE 26 ). Pseudosutures solid black, margin irregular ( Fig. 26 D View FIGURE 26 ). Median longitudinal black band complete ( Fig. 26 D View FIGURE 26 ). Trichobotria lateral to the spiracles. Posterolateral angles of segment VII not reaching the level of apices of laterotergites IX in females ( Fig. 8 F View FIGURE 8 ). Male genitalia, dorsal side of the pygophore with a suffused brown area occupying 1/3 of the surface ( Fig. 8 A,B,D,F View FIGURE 8 ). Posterolateral angle of pygophore slightly developed ( Fig. 8 A View FIGURE 8 ). Superior process of genital cup little developed, fixed to the wall of the tenth segment, rectangular, thick, tumid, not continuing ventrally in a carina ( Fig. 8 B,E View FIGURE 8 ). Anterior half of proctiger black ( Fig. 8 A,B,D,E View FIGURE 8 ). Ventral rim not setose ( Fig. 8 C View FIGURE 8 ). Female genitalia, valvifers VIII with a small dentiform projection on the valvifers IX; tumescence in the central region of the valvifers VIII with black spot; valvifers IX with black spot; laterotergites VIII with dark band on outer lateral margins; laterotergites IX with black spot in dug the base ( Fig. 8 F View FIGURE 8 ).

Male genitalia ( Fig. 8 A–E View FIGURE 8 ): Parameres with brown margin; anterior lobe round and subrectangular; dorsal and posterior lobe rounded ( Fig. 8 B,D,E View FIGURE 8 ). Proctiger with subtriangular posterior face ( Fig. 8 D,E View FIGURE 8 ). Ventral rim with expansions undeveloped and concolorous with surface ( Fig. 8 C View FIGURE 8 ).

Female genitalia: Valvifers VIII with dark punctures and setulose; inner margins black, contiguous and divergent; distal margin forming distal U-shaped excavation, with black band and arched. Laterotergites IX with apices acuminate passing the sclerite uniting laterotergites VIII ( Fig. 8 F View FIGURE 8 ).

Comments. The type locality of this species, Esmeralda, was considered Venezuela by Breddin (1905) and Gaedike (1971), but Esmeralda was considered Colombia by Breddin in his description of Edessa (E.) schirmeri and E. (E.) subandina ( Breddin 1904, Gaedike 1971). But in one of the E. (E.) subandina labels is written Esmeralda, Venezuela ( Fig. 22 D View FIGURE 22 ). Therefore, we were unable to correctly place this location in any of the mentioned countries. The E. (E.) helicoceras can be easily separated from the other species of the group by the humeral angles narrow and long ( Fig. 26 C,D View FIGURE 26 ); connexivum without spots ( Fig. 26 C View FIGURE 26 ) and ventral surface with wide black stripes ( Fig. 26 D View FIGURE 26 ).