Doesburgedessa, Fernandes, José Antônio Marin, 2010

Fernandes, José Antônio Marin, 2010, A new genus and species of Edessinae from Amazon Region (Hemiptera: Heteroptera: Pentatomidae), Zootaxa 2662, pp. 53-65 : 54-55

Doesburgedessa gen. nov.

Type species: Doesburgedessa rugifera ( Stål, 1872) n. comb.

Etymology. Named in honor to Dr Pieter van Doesburg. During many years he found, photographed, and made notes of most of the type specimens belonging to Edessinae in many museums. He also collected the literature and made them available. During all these years he paved the way on which we are now walking. Gender: feminine.

Body ranging from 11.70 to 14.90 long. Oblong in shape, two times as long as broad not considering humeral angles. Humeral angles long, straight, conical, and acute. Antennae long and very slender. Dorsal surface light brown-greenish to brown. Dorsal punctures dark, dense, and uniform (figs. 30–34). Ventral surface lighter than dorsal surface with punctures sparse and concolorous. Propleura with dark punctures. Intersegmental areas on venter of abdomen with dark stripes. Abdomen caudally sharply forked.

Head triangular, wider than long, dark punctures concentrated in longitudinal rows edging tylus and jugae. These punctures covered by dark stripes that reach the base of head. Jugae longer than tylus and contiguous in front of it, lateral margins rounded, sinuate, and anteriorly rounded and somewhat bent ventrally. Tylus and jugae at same elevation in lateral view. Antenniferous tubercles visible from dorsal view and not armed. First antennal segment surpassing apex of head and shorter than remaining segments. Second segment somewhat shorter than third. Fourth slightly longer than third plus second and subequal to fifth. Bucculae large, anteriorly high, somewhat convergent, running backwards and evanescent at posterior part of gula. Rostrum with first segment short, subequal to third and not surpassing bucculae; second segment longest and slightly flat; forth segment shortest and fitting into metasternal shield.

Pronotum trapezoidal and wider than long. Cicatrices calloused and concolorous with pronotal disc, outlined by a row of punctures covered by dark stripes. Humeral angles strongly developed laterally, somewhat bent upwards, apex acute, light brown to reddish. Punctures dark, dense and uniformly distributed. Anterolateral margins with a small tubercle on anterior angles and transversally furrowed to humeral angles. Posterior margin along scutellar base shallowly concave. Evaporative area wrinkled, whitish and dull, covering part of mesopleuron and almost all of metapleuron. Ostiolar peritreme long, smooth, and shiny, narrowing apically and almost reaching lateral margin of the body. Metasternal process smooth and slightly convex with few setae, anterior part with a single projection detached from body and supported by two lateral lobes (figs 5–6). Scutellum longer than wide, sharp posteriorly, and reaching sixth abdominal segment. Corium with dark punctures, densely and uniformly distributed but smaller than those on pronotum and scutellum. Veins plus margin of claval suture yellow and calloused. Membrane of hemelytron light brown with a few almost parallel veins. Legs light brown, femora sparingly and finely setose, tibiae more strongly and densely setose, especially towards apices; tibiae and tarsi somewhat darker towards apex.

Connexivum exposed, color lighter than remainder of dorsum and without punctures. Posterolateral angles of third to sixth segments with small black spines, seventh segment with posterolateral angles strongly developed with inner margins and apices black. Dorsal surface of abdomen light brown, without punctures; medial area furrowed and lighter in color from fifth to seventh segments. Sterna yellow with dark stripes on intersegmental areas and pseudosutures, without punctures and sparsely setose. Spiracles located in calloused areas. Trichobothria on segments III to VII close to each other and lined up with spiracles. Posterior angle of segment VII (VII) very well developed especially in males (fig. 4, 32).

Male genitalia (figs. 1–3). Pygophore (pyg) with posterodorsal opening (figs. 1–2). Dorsal surface of pygophore smooth but dorsal rim rough. Dorsal rim (dr) excavated, projected over genital cup, covering totally or partially genital cup process (fig. 1). Ventral rim (vr) bilobed, lobes separated by median concavity (fig. 3). Genital cup process (gp) long, black, and tumid. Paramere (pa) yellow and cylindrical basally, flat, broad and black distally, with two lobes, one anterior and other posterior to lateral (fig. 2). Proctiger (x) cylindrical with two distal concave areas on dorsal surface; posterior surface distinctly textured (figs. 1–2).

Female genitalia (fig. 4). Gonocoxites 8 (gc8) slightly convex with a few dark punctures on distal half. Laterotergites 8 (la8) longer than wide, convex, distal angle sharp and produced, small concolorous spiracle medially at basal angle. Gonocoxites 9 (gc9) trapezoidal and convex. Laterotergites 9 (la9) shorter than laterotergites 8, distal margin reaching or passing band dorsally uniting laterotergites 8. Segment X (x) trapezoidal.

Comments. The new genus is proposed based on the shape and structure of the metasternal process. This shield-like structure in Doesburgedessa has a single conical and anteriorly directed projection which is detached from the ventral surface of the body and supported by two small lateral lobes (figs. 5–6). These two lobes seem to be homologous to the ones that form the anterior part in Edessa , Peromatus , Olbia , and Brachystethus . In Pantochlora, on the other hand, the metasternal process is compressed, not bifurcate, and the anterior part is ventrally expanded and contiguous with the ventral surface of the prosternum.

Distribution (fig. 35). GUYANA: East Berbice-Corentyne; FRENCH GUIANA: Cayenne, St. Laurent du Maroni; PERU: Madre de Dios. BRAZIL: Amazonas, Pará, Mato Grosso. BOLIVIA: Santa Cruz.