Mitripus Roston, 1978

B Ian Chi, Fil Ipe M., Prá, M Arín Dia D E, Ferrari, Augu Sto, Grazia, Jocelia, Valente, Vera L. S. & Cam Pos, L Uiz A., 2016, Total evidence phylogenetic analysis and reclassification of Euschistus Dallas within Carpocorini (Hemiptera: Pentatomidae: Pentatominae), Systematic Entomology 42 (2), pp. 399-409 : 8

Mitripus Roston, 1978 , newrank

Type species. Euschistus acutus Dallas, 1851 , by original designation.

Included species. Mitripus acutus (Dallas, 1851) comb.n.; M. convergens (Herrich–Schäffer, 1842) comb.n.; M. legionarius ( Breddin, 1914) comb.n.

( Figure 1 for habitus images)

Distribution. South America

Diagnosis. Mitripus is phylogenetically related to Adustonotus gen.n., Ladeaschistus and Sibaria . It can be distinguished from other genera by the unarmed femora, rostrum never surpassing the posterior limit of metacoxae, mandibular plates usually subequal in length to clypeus, and ivory maculae present at apex of the radial vein.

Description. Brown or dark brown; ventrally light brown or orange light brown; legs pale yellow with black spots at bases of setae. Head: longer than wide; mandibular plates tapering toward the apex but not spinose, convergent, equal in length to or slightly longer than clypeus. Anterior margins of buculae rectilinear or rounded, posterior margins evanescent. Rostrum reaching the metacoxae. Antennae five-segmented. Ocelli reddish, well developed. Thorax: pronotum with 1+1 callus at inner posterior margin of each scar; anterolateral margins toothed; humeral angle projected laterad, varying in size and shape, apex slightly rounded or acute. Scutellum foveate in basal angles. Metasternal gland bearing short spout-like peritreme; evaporatorium not contrasting with ventral colour, on metepisternum extending to the lateral margin of thorax. Apex of radial vein presenting small ivory spot. Membrane of hemelytra brownish, translucent. Abdomen: connexivum segments brown to dark brown with a pale semicircular spot between the anterior and posterior angle. Spiracles varying from light brown to black. Female genitalia: sutural margins of gonocoxites, eight overlapping along basal half. Ductus receptaculi proximalis about twice the length of vesicular area, ductus receptaculi distalis tubular to dilated. Pars intermedialis coiled. Male genitalia: ventral rim of pygophore concave at middle. Segment Xentirely convex, presenting bumps near base. Ductus seminis distalis short.

Figures

Fig. 1. Bayesian inference consensus tree based on the analysis of four molecular markers and morphological characters for 32 species of Euschistus and related carpocorines. Numbers in circles above branches refer to clade numbers discussed in the text. Numbers close to nodes are Bayesian posterior probabilities (PPs)/maximum likelihood bootstrap support (BS), respectively. Only nodal support above PP = 0.5 or BS = 50 is displayed (‘–’ indicates no support for that clade). Habitus photos of representative species of Euschistus Dallas and other Carpocorini’s genera. [Colour figure can be viewed at wileyonlinelibrary.com].