Acanthoventris drewseni ( Stal , 1854) Ruschel & Bianchi & Campos & Carvalho, 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 drewseni ( Stal, 1854) comb. nov.

Fig. 12

Cicada drewseni Stål, 1854: 242

Fidicina gastracanthophora Berg, 1879: 138 (syn. apud Distant, 1906: 92)

Fidicina drewseni ; Distant, 1906: 92

Dorisia drewseni ; Delétang, 1919: 85

Dorisiana drewseni ; Metcalf, 1963: 405

Type locality.

Minas Gerais, Brazil.

Type material.

Syntype: male ( NHRS) (Fig. 12 A ), Minas Gerais, Dreweni Stål, NHRS-GULI, 29414, Typus. (examined by photographs).

Diagnosis.

The species can be distinguished from all other species of Acanthoventris gen. nov. by the following combination of features: anterior margin of head convex; postclypeus with a dark castaneous band covering the longitudinal groove and the transverse grooves; labium long, reaching the sternite III; lateral margin of operculum convex and marked with black becoming concave toward the apex; lateral margin of uncus slightly convex becoming tightly convex in the ventral apophyses; and a spine present on the vesica. This species has a similar morphology to. A. charrua sp. nov. but can be distinguished by the small body size, dark castaneous color and the operculum short, not covering the timbal cavity and the apex does not reach the auditory capsule.

Color.

Body dark castaneous, marked with black and tawny.

Description.

Head (Fig. 12 B ): with a transverse wide black band departing from each eye, covering the posterior margin of eyes and the ocelli, reaching the apex of the postclypeus; silver setae in the posterior margin of eyes; antenna with a dark castaneous scape, pedicel and flagellum; anterior margin of head slightly convex; postclypeus (Fig. 12 C ) oval in ventral view and with a dark castaneous band covering the longitudinal groove and the transverse grooves; postclypeus flat in lateral view, the apex not prominent in dorsal view relative to the supra-antennal plate, longitudinal groove slender and shallow; anteclypeus dark castaneous and carina tawny marked with dark castaneous; lorum black; mentum tawny; labium dark castaneous and long, reaching the sternite III (Fig. 12 D ). Pronotum (Fig. 12 B ): with a longitudinal black band at middle; pronotal collar tawny with pilus silver setae. Mesonotum (Fig. 12 A ): submedian, lateral sigillae and scutal depression marked with black; basisternum 3 (Fig. 12 D ) with well-developed protuberances relative to the median insertion, both protuberances approximate forming an acute angle; posterior margin angled; cruciform elevation not covering tergite 1; apex of the posterior projections obtuse; operculum (Fig. 12 E ) obtuse and short, not covering the timbal cavity and the apex does not reach the auditory capsule, the internal angles very short, the apex obtuse and widely spaced, anteromedian margin concave anteriorly to the internal angle and marked with black, lateral margin convex and marked with black becoming concave toward the apex, the posterior margin slightly straight; meracanthus reaches the posterior margin; gutter present in all margins; legs tawny marked with castaneous, and tawny between the femur and tibia; wings hyaline; forewings: anterior portion of the basal cell opaque; hindwings: radius vein straight. Abdomen (Fig. 12 A ) subcylindrical and almost oblong in some specimens, the length equivalent to the combined length of the head and thorax in dorsal view; timbal cover (Fig. 12 F ) flat, apex obtuse reaching the lateral metascutellar plate; middle third of anteromedial margin concave, ventral anterior margin tightly concave (away from the posterior margin of operculum); tergites 3 to 7 tawny with the anterior margin marked with dark castaneous; sternite VII (Fig. 12 G ) sub-triangular, the lateral margin concave, becoming straight toward the apex, the posterior margin slightly emarginate. Uncus (Fig. 12 H, I ): lateral margin slightly convex becoming tightly convex in the ventral apophyses; uncal dorsal crest fused and dorsally projected; lateral branches of uncus undeveloped, convex bud-like, the internal margin slightly concave; ventral apophyses with internal margin forming a sub-rectangular lobe distally directed; posterior margin forming an obtuse angle posteriorly directed. Pygofer (Fig. 12 J ) sub-cylindrical; the basal lobe long, almost reaches the uncal dorsal crest. Theca (Fig. 12 K, L ) dorsally developed with a ventral thecal process; vesica originates in a fissure at the distal third of the theca, extruded and ornamented with cornuti in both the inner and outer surfaces; spine present on the vesica. -

Female.

Unknown.

Measurements (in millimeters).

Syntype male ( NHRS) and specimen male ( INPA). Length of body: 17.54, 16.05; width of head including eyes: 8.07, 7.24; length of the head: 1.25, 1.35; width of pronotum including pronotal collar: 7.92, 7.29; length of pronotum including pronotal collar: 2.59, 2.61; width of mesonotum: 6.75, 6.39; length of mesonotum: 5.66, 4.68; length of forewing: 27.46, 24.42; width of forewing: 8.59, 7.60; length of hind wings: 14.11, 12.42.

Material examined.

Male ( INPA), BRAZIL, Goiás: Caldas Novas , Parque Est. Serra , de caldas novas, 1.000 m, 17°46'13"S, 48°39'22"W, 22-23.II.2008 Luz, J. A. Rafael & F. F. Xavier Fº .

Distribution.

Brazil ( Goiás, Minas Gerais).

Figures

Figure 12. Acanthoventris drewseni comb. nov., male. A Habitus of syntype 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 latero-ventral view. Scale bars: A = 1 cm; B-D = 2 mm; E-G, J = 1 mm; H, I, K, L = 0.5 mm. Obs. Only the photograph A is from holotype: photographed by Gunvi Lindberg (© 2016 Naturhistoriska riksmuseet). Original photos cropped, light levels and contrast adjusted. Made available by the Swedish Museum of Natural History under Creative Commons Attribution 4.0 International Public License, CC-BY 4.0 [https: // creativecommons. org / licenses / by / 4.0 / legalcode]. 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.