Edessa stalii Distant, 1881

Campos, Breno Batista, Nunes, Benedito Mendes, Bitar, Murilo Victor Silva & Fernandes, Jose Antonio Marin, 2020, Description of a new group of species of Edessa Fabricius, 1803 (Hemiptera: Pentatomidae: Edessinae) with translucent spot on hemelytra, Zootaxa 4810 (1), pp. 131-142 : 134

publication ID	https://doi.org/ 10.11646/zootaxa.4810.1.7
publication LSID	lsid:zoobank.org:pub:8FFCB5C3-0C91-45EF-A97E-FCE961C4D250
DOI	https://doi.org/10.5281/zenodo.4328786
persistent identifier	https://treatment.plazi.org/id/03AA87EE-C73F-9E60-D3A9-48E0E8C2F8FA
treatment provided by	Plazi
scientific name	Edessa stalii Distant, 1881
status

Treatment

( Figs. 1 View FIGURE 1 A–D; 5A–B; 6)

Edessa stalii Distant, 1881: 93 , pl 9 fig 14; Lethierry & Severin, 1893: 195 (catalog); Kirkaldy, 1909: 165 (catalog); Fernandes, Silva, Correia, Nunes, 2015: 512 (list).

Holotype female. Costa Rica, Irazú [Cartago], H. Rogers ( BMNH). Examined.

Material examined. COSTA RICA. Guanacaste: 1♂ Estac. Cacao, 1000–1400m SW side Volcan Cacao , Set–1989, 323300, 375700, R. Blanco & C. Chavez, INBIO CRI000 051112 ( INBio) ; same data : 1♂ INBIO CRI000 051119 ( UFRGS) ; 1♂ CRI000 051118 ( INBio) ; 1♀ CRI000 051130 ( INBio) ; 1♀ CRI000 043005 ( UFRGS) ; Puntarenas: 1♀ Monteverde , 7–July–1981, 7–0:30pm UV behind Persion Quetzal, Stuart McKamey Coll. ( JEE) ; 1♂ 1♀ Monteverde , V–26–VI–3–84, E. Riley, D. Rider, D. LeDoux, Edessa stalli Distant, 1881 Comp. W. TYPE Fernandes, JAM 1999 ( DRC) ; Cartago: 1♀ Jiménez, Pejibaye [district], Finca Bajo Tapantí , 1250m, L_N_195930_ 561751 #80036, 12–ABR–2005, J. Azofeifa Zuniga, Libre, INB0003934839 ( INBio) .

Measurements. antennomeres length: 1st: 0.7–0.9; 2nd: 1.6–2.0; 3rd: 1.6–1.9; 4th: 2.8–3.3; 5th: 3.1–3.5; head length: 1.5–2.0; head width: 2.7–3.1; pronotal length: 2.7–3.1; pronotal width: 8.1–9.6; scutellum length: 5.0–5.5; scutellum width: 3.7–4.2; abdominal width: 7.9–9.5; total length: 14.6–17.1.

Diagnosis. Antennae with segment I, base of segments III and IV and basal third of V yellowish ( Fig. 5A,B View FIGURE 5 ). Anterolateral margin of pronotum orange ( Fig. 5A View FIGURE 5 ). Coria each with an orange stripe on costal margin, which continues the orange stripe of pronotum ( Fig. 5A View FIGURE 5 ); punctures concolorous, except on brown spot where punctures are black. Posterolateral angles of pygophore clearly below the level of dorsal rim in lateral view and fused to ventral rim, forming a deep and concave structure ( Fig. 1A,B View FIGURE 1 ). Paramere formed by a single projection straight and dorsally directed ( Fig. 1B View FIGURE 1 ). Posterior margins of gonocoxites 8 acute and clearly surpassing gonocoxites 9 ( Fig. 1D View FIGURE 1 ).

Description. Head. Mandibular plates with apical margins dark.

Thorax. Apical margins of humeral angles brownish. Scutellum with apex impunctate. Veins of coria concolorous with surrounding area ( Fig. 5A View FIGURE 5 ). Membranes of hemelytra light brown ( Fig. 5A View FIGURE 5 ). Ventral surface with dark punctures concentrated on pro- and metapleura ( Fig. 5B View FIGURE 5 ).

Abdomen. Posterior third of seventh connexival segments black.

Male ( Fig. 1 View FIGURE 1 A–C). Dorsal rim of pygophore sinuous, darker than dorsal surface, ending in a suture close to each posterolateral angle ( Fig. 1A View FIGURE 1 ); with a pair of submedian brown concretions. Posterolateral angles posteriorly projected and rounded, slightly tumid with a dark spot below tumescence ( Fig. 1A View FIGURE 1 ). Superior process of the genital cup kidney-like, black, short, narrow, with a medial depression; oblique to dorsal rim ( Fig. 1B View FIGURE 1 ). Parameres tongue-like, short, yellow to green on base, remaining parts black. Proctiger posterolaterally excavated, excavations deep, dorsally delimited by raised crest; posterior face subtriangular with medial short vertical carina, ventral corners black ( Fig. 1B View FIGURE 1 ). Ventral rim (vr) with medial deep excavation delimited by rounded concave expansions, barely tumid, level with posterolateral angles in ventral view ( Fig. 1C View FIGURE 1 ). Ventral surface rugulose medially, sparsely Punctured.

Female ( Fig. 1D View FIGURE 1 ). Gonocoxites 8 slightly convex; strongly projected posteriorly, reaching distal halves of laterotergites 9, outer lateral margins straight; mesial border projected forming a medial tooth. Gonocoxites 9 strongly inclined laterally. Laterotergites 9 concave basally; apices clearly surpassing sclerite uniting laterotergites 8.

Comments. This species is more closely related to E. translucida sp. n. than to the other species of the group because of the lack of pigment in the medial region of each corium ( Fig. 5A,C View FIGURE 5 ), and the ventral rim of the pygophore with expansions distinctly projected and level with the posterolateral angles ( Figs. 1C View FIGURE 1 ; 2C View FIGURE 2 ). However, E. stalii can be differentiated by its parameres each with a single projection, the superior process of the genital cup kidney-like, and the gonocoxites 8 distinctly projected posteriorly ( Fig.1B,D View FIGURE 1 ); whereas in E. translucida sp. n., the parameres are divided into two lobes, the superior process of the genital cup is rounded, and the gonocoxites 8 are only slightly projected posteriorly ( Fig. 2B,D View FIGURE 2 ).