Calvariopsis sculptipenne ( Pic, 1931 ) Ruta, 2019

Ruta, Rafał, 2019, Calvariopsis gen. nov., a new genus of Neotropical Scirtidae (Coleoptera: Scirtoidea), Zootaxa 4604 (1), pp. 1-41 : 21-22

Calvariopsis sculptipenne ( Pic, 1931) comb. nov.

( Figs 1K , 7 C–D, 16A)

= Cyphon sculptipennis Pic, 1931: 5

= Contacyphon sculptipennis ( Pic, 1931) : Zwick et al. 2013

Type material. Holotype, female ( MNHN): “Corumba \ Matt Grosso” [printed label]; “sculptipennis \ n sp” [in Pic’s hand]; “ HOLOTYPUS \ Cyphon sculptipennis \ Pic, 1931 ” [red label, printed].

Redescription. Female. Body oblong oval, convex, covered with yellowish suberect setae. Body uniformly dark brown, venter brown. Head very broad, 1.75× wider than width of interocular space, with distinct but fine punctation, punctures small, granulate, separated by ca. 2.0–3.0× diameter of a puncture, eyes moderately large, not protuberant. Pronotum transverse, widest at its base. Disc of pronotum with fine, granulate punctation, punctures separated by 1.5–2.0× diameter of a puncture. Posterior margin of pronotum subtly bisinuate. Anterior angles protruding anteriorly, subtriangular, posterior angles obtuse. Scutellar shield subtriangular, with very fine, granulate punctation. Angle between pronotum and elytra subtly marked in dorsal outline. Elytra oblong, without traces of longitudinal ridges, broadest in the middle of their length. Sides slightly curved in apical 1/2, regularly converging to apex in posterior 1/3. Humeri well marked. Punctation stronger than on pronotum, punctures elongate, distance between punctures ca. 0.7–1.0× diameter of a puncture. Apical portion of elytra depressed in adsutural portion, with two deep cavities on each elytron ( Figs 7 C–D). Sternite VIII elongate, Y-shaped, with single apodeme. Remaining structures of genital tract missing in the studied specimen.

Male. Unknown.

Measurements and ratios. Female (n = 1) TL 2.83 mm, PL 0.57 mm, PW 1.23 mm, EL 2.34 mm, EW 1.83 mm, TL/EW 1.55, PW/PL 2.16, EL/EW 1.28, EL/PL 4.11.

Distribution. Known only from the type locality in Brazil, close to the border with Bolivia, in the Pantanal wetland.

Remarks. Presence of well developed, foveate excitators in apical portions of elytra, and TL larger than 2.4 mm support inclusion of this species in the group I of Calvariopsis gen. nov.

Figures

FIGURE 1. Calvariopsis gen. nov., dorsal view. A) C. borowieci sp. nov., male; B) C. borowieci sp. nov., female; C) C. four- gassiense sp. nov., male; D) C. panamense sp. nov., male; E) C. peruviana sp. nov., Dept. Cusco, male; F) C. peruviana sp. nov., Callanga, male; G) C. peruviana sp. nov., Dept. Junín, male; H) C. picta sp. nov., Callanga, male; I) C. pittieri sp. nov., male; J) C. pittieri sp. nov., female; K) C. sculptipenne (Pic, 1931), female; L) C. venezuelense sp. nov., male; M–O) C. yanay- acuense sp. nov., males; P) C. yanayacuense sp. nov., female; Q) C. bituberculata sp. nov., male; R) C. brasiliense (Pic, 1916), male; S) C. brasiliense, female; T) C. guyanense sp. nov., male; U) C. kawense sp. nov., male; V) C. nana sp. nov., male; W) C. saopaulense sp. nov., male; X) C. wittmeri sp. nov., male; Y) C. sp., Bolivia, female. Scale bars = 1.0 mm.

FIGURE 7. Calvariopsis gen. nov., group I, females, apical portion of elytra, SEM images of excitators. A) C. borowieci sp. nov.; B) C. sp., Costa Rica; C–D) C. sculptipenne (Pic); E–F) C. yanayacuense sp. nov.