Adustonotus, B I A N C H I & Á & I & A & Va L E N T E & C A M P O S, 2016

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

Adustonotus Bianchi, gen.n.

http://zoobank.org/ urn:lsid:zoobank.org:act:1B8A3CA9-2F60-4DFC-BA73-6284D7FA6037

Etymology. From adustus (Latin) burned by the sun, tanned, brown and Greek noton, neuter; notos, masculine back, ridge; referring to the darker dorsal colour.

Type species. Euschistus anticus Stål, 1860 , here designated.

Included species. Adustonotus anticus (Stål, 1860) comb.n.; A. latus (Dallas, 1852) comb.n.; A. tauricornis (Stål, 1872) comb.n.; A. grandis ( Rolston, 1978) comb.n.; A. hansi ( Grazia, 1987) comb.n.; A. paranticus ( Grazia, 1987) comb.n.; A. irroratus ( Bunde et al., 2006) comb.n.; A. saramagoi (Bianchi et al. 2015) comb.n..

( Figure 2 for habitus images)

Distribution. Argentina, Brazil and Uruguay.

Diagnosis. Adustonotus gen.n. is phylogenetically related to Ladeaschistus , Mitripus new rank, and Sibaria . It can be distinguished from other genera by the unarmed femora, rostrum at least reaching metacoxae, mandibular plates rounded at apex, convergent, and at least slightly longer than clypeus, and spiracles dark brown to black.

Description. Brown or light brown, darker on anterior portion of pronotum and head; ventrally yellowish light brown; legs pale yellow with black spots at bases of setae. Head: longer than wide; mandibular plate rounded at apex, convergent, and at least slightly longer than clypeus. Anterior margins of buculae rectilinear or rounded, posterior margins evanescent. Rostrum at least reaching metacoxae. Antennae five-segmented. Ocelli reddish, well developed. Thorax: pronotum with 1+1 callus at inner posterior margins of scars; anterolateral margins toothed; humeral angles varying in size and shape, apices slightly rounded, acute, or spatulate. Scutellum foveate at basal angles. Metasternal gland bearing a short spout-like peritreme; evaporatorium not contrasting with ventral colour, on metepisternum extending to the lateral margin of thorax. Apex of radial vein immaculate, except in A. latus comb.n.. Membrane of hemelytra somewhat brown, translucent. Abdomen: connexivum segments brown to dark brown with a pale semicircular spot between the anterior and posterior angles of each. Spiracles dark brown to black. Female genitalia: sutural margins of gonocoxites eight overlapping along the basal half. Ductus receptaculi proximalis varying in length, ductus receptaculi distalis dilated near anterior flange. Pars intermedialis straight. Male genitalia: superior rim of phygophore interrupted by diagonal depression. Segment Xentirely convex, presenting bumps near base. Ductus seminis distalis short.

Figures

Fig. 2. Bayesian inference consensus tree based on the analysis of four molecular markers and morphological characters for 23 species of Euschistus and related carpocorines. Numbers in circles near branches refer to clades discussed in the text. Numbers close to nodes are Bayesian posterior probabilities (PPs) and maximum likelihood bootstrap support (BS), respectively. Only nodal support above PP = 0.5 or BS = 50 is displayed (‘–’ indicates no support). The fast track depicts morphological features for ease of recognition of species within the specified clades. [Colour figure can be viewed at wileyonlinelibrary.com].