Acanthoventris claudiae 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 claudiae Ruschel sp. nov.

Figs 8 , 9

Type locality.

Pelotas, Rio Grande do Sul (Brazil).

Type material.

Holotype: male ( MCTP) (Fig. 8A ), Brazil, Rio Grande do Sul, Pelotas , V.1963, Ribeiro, A.S. col., cod. 32698. - Paratypes (8 males, 2 females): male ( MCTP), same data as holotype except III.1963, Pedroso, P. col., cod. 32700 ; male ( MCTP), IV.1963, Striagari, S. col., cod. 32699 ; male ( MCTP), 01.V.1964, Goulart col., cod. 31746 ; male ( MCTP), 28.IV.1965, Da Silva col., cod. 32697 ; male ( NHMUK), 05.V.1967, Elmar col., cod. 32702 ; male ( MCTP), X.1974, Senna col., cod. 32696 ; male ( MCTP), 29.IV.1982, Cunha col., cod. 32701 ; male ( MCTP), 12.III.1986, Augusto col., cod. 32703 ; female ( MCTP), (Fig. 9A ) IV.1982, Peres col., cod. 32704 ; female ( NHMUK), 24.IV.1968, Bueno, A. col., cod. 32751 .

Etymology.

The species is named in honor to the mother of the first author, Claudia Petersen Ruschel.

Diagnosis.

The species can be distinguished from all other species of Acanthoventris gen. nov. by the following combination of features: body yellowish; anterior margin of head slightly convex; basisternum 3 with little developed protuberances relative to the median insertion, closely spaced, and the posterior margin straight; basal vein of the second apical cell straight; timbal cover short, not reaching the lateral metascutellar plate; lateral margin of uncus straight becoming slightly convex in the ventral apophyses; basal lobe almost reaching the apex of ventral apophyses; the ventral thecal process is shorter than that of the other species of the genus, with the apex convex.

Color.

Body yellowish with the head, mesonotum and abdomen marked with black.

Description.

Head (Fig. 8 B ): with a transverse wide black band departing from each eye, extending through the area of the ocelli to the limit between the vertex and front; base of the eyes unmarked; anterior margin of head slightly convex; antennae with a yellowish scape, and the pedicel yellowish posteriorly and dark castaneous anteriorly, flagellum dark castaneous; postclypeus (Fig. 8 C ) unmarked, semi-rectangular in ventral view, and flat in lateral view, the apex not prominent in dorsal view relative to the supra-antennal plate; longitudinal groove slender and shallow; anteclypeus, carina, lorum, and rostrum yellowish; labium short, reaching the hind coxae, black at the apex. Pronotum: unmarked; paranota visible in dorsal view, wide and straight in lateral view. Mesonotum: submedian sigillae marked with black (in allotype and some paratypes, the parapsidal suture marked with black); scutal depression unmarked; basisternum 3 (Fig. 8 D ) with little developed protuberances relative to the median insertion, closely spaced; posterior margin straight; cruciform elevation not covering tergite 1; apex of the posterior projections of the cruciform elevation obtuse; operculum (Fig. 8 E ) not marked (inconspicuous central band in some paratypes), obtuse, the apex reaching the auditory capsule but not fully 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 concave, posterior margin slightly linear; meracanthus reaches the posterior margin, gutter present in all margins; legs yellowish becoming darker distally; wings hyaline; forewings: basal cell opaque, and the basal vein of the second apical cell oblique; basal vein of the second apical cell straight; 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. 8 A ); timbal cover (Fig. 8 F ) flat and short, the apex acute, not reaching the lateral metascutellar plate, middle third of anteromedial margin concave, ventral anterior margin slightly concave (near the posterior margin of the operculum); tergites 4 to 6 with a medial anterior bande extending posteriorly (in allotypes and some paratypes, the band are weak or inconspicuous); sternite VII (Fig. 8 G ) sub-triangular, the lateral margin concave, the posterior margin concave and slightly emarginate. Uncus (Fig. 8 H, I ): lateral margin straight becoming slightly convex in the ventral apophyses; lateral branches of uncus undeveloped, convex bud-like, the internal margin slightly straight; ventral apophyses ventrally developed originating from below the lateral branches of uncus; internal margin forming a sub-rectangular distally directed, posterior margin sinuous. Pygofer (Fig. 8 J ) sub-cylindrical; the basal lobe almost reaching the apex of ventral apophyses. Theca (Fig. 8 K, L ) dorsally developed with a short ventral thecal process; apex of ventral thecal process convex; vesica originates in a fissure at the distal third of the theca extruded and adorned with cornuti in the inner and outer surfaces. - Female (Fig. 9 A - E): The female presents the same somatic characteristics as the male (Fig. 9 A ) except the operculum (Fig. 9 C ) is smaller, and sternite VII (Fig. 9 D ) longer with a straight lateral margin convergent towards the apex, the posterior margin straight, directed anteromedially to a wide and truncated middle groove; dorsal beak of segment 9 with the same length as the ovipositor sheath (Fig. 9 E ); ovipositor bears nine teeth.

Measurements (in millimeters).

Holotype male. Length of body: 16.01; width of head including eyes: 6.90; length of the head: 1.60; width of pronotum including pronotal collar: 6.80; length of pronotum including pronotal collar: 2.20; width of mesonotum: male 5.70; length of mesonotum: 3.50; length of forewing: 19.90; width of forewing: male 6.5; length of hind wings: ale 11.20. Paratypes 8 males and 2 females, mean (range). Length of body: male 15.05 (14.40-15.80), female 15.00 (16.10-13.90); width of head including eyes: male 6.93 (6.70-7.00); female 7.25 (7.60-6.90); length of the head: male 1.60 (1.60-1.60), female 1.65 (1.60-1.70); width of pronotum including pronotal collar: male 6.73 (6.40-7.00), female 7.20 (7.50-6.90); length of pronotum including pronotal collar: male 2.38 (2.40-2.50), female 2.65 (2.70-2.60); width of mesonotum: male 5.58 (5.40-5.70), female 5.80 (5.70-5.90); length of mesonotum: male 3.68 (3.30-3.90); female 3.95 (4.10-3.80); length of forewing: male 19.50 (18.00-21.00), female 21.50 (21.80-21.20); width of forewing: male 6.80 (6.50-7.00), female 6.90 (7.00-6.80); length of hindwings: male 10.93 (10.20-11.80), female 11.55 (11.70-11.40).

Distribution.

Brazil (Rio Grande do Sul).

Figures

Figure 8. Acanthoventris claudiae 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 ventral view. Scale bars: A = 1 cm; B-D = 2 mm; E-G, J = 1 mm; H, I, K, L = 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.

Figure 9. Acanthoventris claudiae sp. nov., paratype female. A Habitus in dorsal view; B Thorax in ventral view; C Operculum in latero-ventral view; D Sternite VII, abdominal segment 9 and ovipositor sheath in ventral view; E Tergites and abdominal segment 9 in lateral view. Scale bars: A = 1 cm; B, D, E = 2 mm; C = 1 mm.