Acanthoventris phoenix 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 phoenix Ruschel sp. nov.

Fig. 18

Type locality.

Magé, Rio de Janeiro, Brazil.

Type material.

Holotype: Male ( MNRJ) (Fig. 18A ), Barreiras, Magé, E. do Rio , 24-I-58, D.Z. 67/60, J. Oiticica e R. Barros cols. - Paratype: Male ( MNRJ) same data as holotype .

Etymology.

The specific name refers to the immortal bird of Greek mythology which obtains new life by arising from the ashes. The specimens designated as holotype and paratype were received by the first author before the Museu Nacional (Rio de Janeiro, Brazil) fire in 2018. The name is in honor of this important museum that we hope arises from the ashes like a Acanthoventris phoenix . Latin: Acanthoventris phoenix , symbolic of resurrection and immortality.

Diagnosis.

The species can be distinguished from all other species of Acanthoventris gen. nov. by the following combination of features: body orange; anterior margin of head slightly convex; labium short, almost reaching the base of basisternum 3; operculum obtuse and long, covering the timbal cavity and the auditory capsule; timbal cover flat and long, the apex acute, almost reaching the lateral metascutellar plate; tergites 2 to 7 with pilus setae in both lateral margins; the anterior margin of ventral thecal process with a slender projection. This species has a similar morphology to A. densusus comb. nov. due the tergites with pilus setae in both lateral margins, and A. charrua sp. nov. due the body color and bands. A. phoenix sp. nov. can be distinguished by the posterior margin of ventral apophyses convex with an acute-angled laterally and posteriorly developed.

Color.

Body orange with head, thorax and abdomen marked with black.

Description.

Head (Fig. 18 B ): with a transverse 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 marked with black; anterior margin of head slightly convex; antennae with a orange scape, and the pedicel and flagellum black; postclypeus (Fig. 18 C ) unmarked, oval 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 black and carina tawny, lorum black; mentum tawny; labium short, almost reaching the base of basisternum 3, black at the apex. Pronotum (Fig. 18 B ): slightly marked with black in lateral fissures with setae; paranota tawny with black setae. Mesonotum (Fig. 18 B ): submedian and lateral sigillae and scutal depression marked with black; basisternum 3 (Fig. 18 D ) with developed protuberances relative to the median insertion, closely spaced; posterior margin forming an obtuse angle; cruciform elevation not covering tergite 1; apex of the posterior projections of the cruciform elevation obtuse; operculum (Fig. 18 E ) obtuse and long, covering the timbal cavity and the auditory capsule, the internal angles very short, the apex obtuse and widely spaced, anteromedian margin concave anteriorly to the internal angles and marked with black, the lateral margin concave, posterior margin slightly straight; meracanthus reaches the posterior margin, gutter present in all margins; legs tawny becoming castaneus distally; wings hyaline (Fig. 18 A ); forewings: basal cell opaque anteriorly, and the basal vein of the second apical cell oblique; apical cell 2 almost 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. 18 A ); timbal cover (Fig. 18 F ) flat and long, the apex acute, almost reaching the lateral metascutellar plate, middle third of anteromedial margin concave, ventral anterior margin slightly concave (near the posterior margin of the operculum); tergites 2 to 7 with pilus setae in both lateral margins; sternite VII (Fig. 18 G ) sub-triangular, the lateral margin convex becoming slightly concave toward the apex, the posterior margin slightly emarginate. Uncus (Fig. 18 H, I ): lateral margin slightly sinuous becoming tightly 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 convex with an acute-angled laterally and posteriorly developed. Pygofer (Fig. 18 J ) sub-cylindrical; the basal lobe almost reaches the lateral branches of the uncus. Theca (Fig. 18K-M ) dorsally developed with a ventral thecal process; anterior margin of ventral thecal process 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: 22.60; width of head including eyes: 9.90; length of the head: 2.07; width of pronotum including pronotal collar: 9.72; length of pronotum including pronotal collar: 3.15; width of mesonotum: 8.28; length of mesonotum: 6.48; length of forewing: 29.62; width of forewing: 9.86; length of hind wings: 14.07. Paratype male. Length of body: 22.13; width of head including eyes: 10.41; length of the head: 2.25; width of pronotum including pronotal collar: 10.12; length of pronotum including pronotal collar: 3.37; width of mesonotum: 8.37; length of mesonotum: 6.61; length of forewing: 31.44; width of forewing: 11.04; length of hind wings: 15.15.

Distribution.

Brazil (Rio de Janeiro).

Figures

Figure 18. Acanthoventris phoenix 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.