Podisus guarani Brugnera & Grazia, 2024

Brugnera, Ricardo, Sampaio, Vinícius, Campos, Luiz Alexandre & Grazia, Jocelia, 2024, Searching for the identity of Podisus Herrich-Schäffer, 1851 (Hemiptera: Pentatomidae): examination of type specimens leads to taxonomic updates and description of five new species, Insect Systematics & Evolution 56 (1), pp. 64-89 : 17-19

Podisus guarani Brugnera & Grazia , sp. nov.

( Fig. 9 )

ZooBank: https://www.zoobank.org/B6783D38-2008-48F3-B54E-2DBFD2A4B082

Type material. Holotype: ♂, Bolivia: Santa Cruz, 3.7km SSE Buena Vista, Hotel Flora & Fauna (-17.4587, -63.6692), 430m, 14-26-X-2000, coll. M.C. Thomas, tropical transition forest ( JEE) .

Etymology. The specific epithet refers to the ethnic group known as Guarani, native inhabitants of several countries in austral South America, especially Paraguay, south-central regions of Brazil, and parts of Argentina, Uruguay, and Bolivia. Noun in apposition.

Differential diagnosis. Podisus guarani sp. nov. is similar to Podisus falcatus , Podisus semialbus , and Podisus bororo by the shape of the humeri (as described above for Podisus bororo ). Podisus guarani is unique among the four species by presenting a pale spot in the apex of the scutellum, combined with the pale and calloused anterolateral margins of pronotum ( Figs 9b–d ).

Description. Coloration: Pronotum, scutellum, and coria with predominance of reddish-brown punctures, interspaced by pale areas. Head and humeri are reddish-brown on the entire surface. Pronotum anterolateral margins are distinctly pale and unpunctured, extending to posterior margin of propleura. Antennae and labium are pale. Urosternites, medial region of propleura, mesopleura and metapleura are pale, and lateral half of propleura, mesopleura and metapleura are brown. Legs pale yellow, without spots. Hemelytral membranes have a fumose spot medially. Connexival segments are brown, with lateral margins light yellow. Head: Mandibular plates and clypeus subequal in length. Proportions of antennomeres: 1 <2> 3 <4> 5. Apex of labiomere 4 surpasses posterior margin of metacoxae. Proportions of labiomeres: 1 <2> 3 ̛ 4. Thorax: Anterolateral angles of pronotum projected, anterolateral margins slightly crenulated. Humeri developed upward, acute, posteriorly directed, with a posterior protuberance. Peritreme of ESES ruga-shaped, reaching half metapleural width. Evaporatorium surrounding peritreme, not reaching metapleural outer margin, extending to mesopleural posterior margin, reaching posterior angle. apex of coria reaches urosternite VI, hemelytral membranes surpass posterior abdominal margin. Abdomen: Urosternite III has a spine, which reaches metacoxae. Posterior angles of urosternite VII developed and acute. Male genitalia: Pygophore cup-like. Posterior opening oval. Dorsal rim concave, with 1 + 1 projections. Inferior layer of ventral rim concave, superior layer sinuous and depressed medially. Head of parameres bifurcated, with posterior margins concave. Pseudoclaspers smooth dorsally.

Female: unknown.

Distribution. Bolivia (Santa Cruz) ( Fig. 11 ).

Measurements. Total length: 8.1; head length: 1.3; head width: 1.6; pronotum length: 2.1; pronotum width: 6.3; scutellum length: 2.9; scutellum width: 2.5; abdominal length: 3.8; abdominal width: 3.9; length of antennomeres: I 0.3; II 1.2; III 0.8; IV 1.2; V 1.0; length of labiomeres: I 0.9; II 1.1; III 0.7; IV 0.6.

Figures

Fig. 9. Podisus guarani, sp. nov. (a–d) Habitus in dorsal, ventral, lateral and dorso-anterior view; (e) thoracic external scent efferent system (ESES); (f–h) pygophore in dorsal, posterior and ventral view. Abbreviations: (dr) dorsal rim; (ilvr) inferior layer of ventral rim; (pa) paramere; (pc) pseudoclasper; (slvr) superior layer of ventral rim. Scales: (a–b) 2 mm; (c–d) 1 mm; (e) 0.5 mm; (f–h) 0.2 mm.

Fig. 11. Geographic distribution of the new species of Podisus Herrich-Schäffer, 1851.