Acanthoventris rubemi Ruschel, 2023

Ruschel, Tatiana Petersen, Bianchi, Filipe Michels, Campos, Luiz Alexandre & Carvalho, Gervasio Silva, 2023, Total evidence analysis elucidates the tangled systematic scenario within Fidicinini (Hemiptera: Auchenorrhyncha, Cicadidae), Arthropod Systematics & amp; Phylogeny 81, pp. 35-77 : 35

Acanthoventris rubemi Ruschel sp. nov.

Fig. 19

Type locality.

Serro, Minas Gerias, Brazil.

Type material.

Holotype: male ( MCTP) (Fig. 19A ), Serro - MG - Brasil, III-26-1976, Col. D. Kneip, Dorisiana drewseni . - Paratypes (2 males): ( MCTP) same data as holotype .

Etymology.

The species is named in honor to the father of the first author, Claudio Rubem Sassen Ruschel.

Diagnosis.

The species can be distinguished from all other species of Acanthoventris gen. nov. by the following combination of features: anterior margin of head slightly convex; lateral and sub-lateral lobes of pronotum with wrinkles and black setae; posterior margin of basisternum 3 tightly acute; apex of operculum reaching the auditory capsule but not covering the timbal cavity; gutter of operculum broad present in all margins; apical cell 2 half of length of apical cell 1; timbal cover short, the apex acute not reaching the lateral metascutellar plate; sternite VII sub-triangular. This species has a similar morphology to A. charrua sp. nov. due the body color and bands. A. rubemi sp. nov. can be distinguished by the timbal cover shorter, the operculum slightly shorter, not covering the auditory capsule, the gutter at apex of the operculum broad, and the basal lobe of pygofer longer.

Color.

Body tawny with the head, thorax and abdomen marked with black.

Description.

Head (Fig. 19 B ): with a transverse black band departing from each eye, extending through the area of the ocelli to the apex of postclypeus; base of the eyes marked with black with silver setae; anterior margin of head slightly convex; antennae with a tawny scape, and the pedicel and flagellum black; postclypeus (Fig. 19 C ) unmarked, oval in ventral view, and flat in lateral view, the apex slightly prominent in dorsal view relative to the supra-antennal plate; longitudinal groove slender and shallow; anteclypeus and carina tawny, lorum black; mentum and labium tawny; labium short, reaching the base of basisternum 3, black at the apex. Pronotum (Fig. 19 B ): with lateral and sub-lateral lobes with wrinkles and black setae; slightly marked with black in lateral fissures; paranota tawny with black setae. Mesonotum (Fig. 19 A ): submedian and lateral sigillae marked with black; scutal depression unmarked; basisternum 3 (Fig. 19 D ) with well developed protuberances relative to the median insertion, closely spaced; posterior margin tightly angled; cruciform elevation not covering tergite 1; apex of the posterior projections of the cruciform elevation obtuse; operculum (Fig. 19 E ) unmarked, obtuse, the apex reaching the auditory capsule but not covering the timbal cavity, the internal angles very short, the apex obtuse and widely spaced, anteromedian margin concave anteriorly to the internal angles, the lateral margin convex, posterior margin slightly straight; meracanthus reaches the posterior margin, gutter broad present in all margins; legs tawny becoming castaneus distally; wings hyaline (Fig. 19 A ); forewings: basal cell opaque anteriorly, and the basal vein of the second apical cell oblique; apical cell 2 half of length of apical cell 1; hindwings: radius vein straight. Abdomen subcylindrical, the length equivalent to the combined length of the head and thorax in dorsal view (Fig. 19 A ); timbal cover (Fig. 19 F ) flat and short, the apex acute not reaching the lateral metascutellar plate, middle third of anteromedial margin concave, ventral anterior margin tightly concave (away from the posterior margin of operculum); tergites 2 marked with black at middle, 3 to 8 marked with black anteriorly; sternite VII (Fig. 19 G ) sub-triangular, the lateral margin slightly convex becoming slightly straight toward the apex, the posterior margin slightly emarginate. Uncus (Fig. 19 H, I ): lateral margin of uncus slightly straight becoming tightly convex in the ventral apophyses; lateral branches of uncus undeveloped, convex bud-like, the internal margin sinuous; ventral apophyses ventrally developed originating from below the lateral branches of uncus; internal margin forming a sub-rectangular distally directed, posterior margin convex with an acute angled distally, and posteriorly developed. Pygofer (Fig. 19 J ) sub-cylindrical; the basal lobe reaching the ventral apophyses. Theca (Fig. 19K-M ) dorsally developed with a ventral thecal process; anterior margin of ventral sclerotized expansion with a slender projection; vesica originates in a fissure at the distal third of the theca extruded and adorned with cornuti in the inner and outer surfaces. - Female: Unknown.

Measurements (in millimeters).

Holotype male. Length of body: 17.06; width of head including eyes: 7.46; length of the head: 2.00; width of pronotum including pronotal collar: 7.76; length of pronotum including pronotal collar: 2.56; width of mesonotum: 6.72; length of mesonotum: 4.88; length of forewing: 23.35; width of forewing: 8.31; length of hind wings: 12.57. Paratypes (2 males). Length of body: 16.05 (15.36-16.75); width of head including eyes: 7.65, 7.71; length of the head: 1.60, 1.84; width of pronotum including pronotal collar: 7.655 (7.12-7.52); length of pronotum including pronotal collar: 3.23 (3.90-2.56); width of mesonotum: 6.00 (5.60-6.40); length of mesonotum: 4.36 (4.16-4.56); length of forewing: 22.55 (22.00-23.11); width of forewing: 7.39 (7.22-7.56); length of hind wings: 11.78 (11.10-12.46).

Distribution.

Brazil (Minas Gerais).

Figures

Figure 19. Acanthoventris rubemi sp. nov., holotype male. A Habitus in dorsal view; B Head and pronotum in dorsal view; C Head and pronotum in ventral view; D Thorax in ventral view; E Operculum in latero-ventral view; F Timbal cover in dorso-lateral view; G Sternite VII in ventral view; H Uncus in ventral view; I Uncus in lateral view; J Pygofer in latero-ventral view; K Aedeagus in left lateral view; L Aedeagus in right lateral view; M Aedeagus in ventral view. Scale bars: A = 1 cm; B-D = 2 mm; E-G, J = 1 mm; H, I, K-M = 0.5 mm. Abbreviations: (aed) aedeagus; (as) anal styles; (at) anal tube; (bl) basal lobe of pygofer; (bp) basal plate; (cor) cornuti; (ds) distal shoulder; (lbu) lateral branch of uncus; (udc) uncal dorsal crest; (un) uncus; (va) ventral apophysis; (ve) vesica; (vtp) ventral thecal process.