Acanthoventris igneus 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 igneus Ruschel sp. nov.

Fig. 16

Type locality.

Alto Paraíso de Goiás, Goiás, Brazil.

Type material.

Holotype: male ( DZRJ) (Fig. 16A ), Brasil, Goiás, Alto Paraiso de Goias , corrego Rodoviarinha , 14°10'04.2"S, 47°49'15.9"W, el. 970 m, 26.iii.2013, coleta diurnal, APM Santos & DM Takiya .

Genbank access number.

OM937995 ( COI); OP548616 ( EF 1-alpha).

Etymology.

The specific name refers to the reddish color of species. Latin: ignis + arius, of fire.

Diagnosis.

The species can be distinguished from all other species of Acanthoventris gen. nov. by the following combination of features: anterior margin of head tightly concave; labium long, reaching the sternite II; operculum slightly reddish, long, the apex reaching the auditory capsule but not covering fully the timbal cavity; the basal vein of the second apical cell of forewings straight; apical cell 2 of forewings half of length of apical cell 1; sternite VII sub-rectangular; the uncus lateral margin slightly sinuous becoming tightly convex in the line of lateral branches; the lateral branches of uncus undeveloped, convex bud-like and slender, with the internal margin tightly convex. This species has a similar morphology to A. iara sp. nov. due the anterior margin of head tightly concave and lateral margin of operculum marked with black and convex. Acanthoventris igneus sp. nov. can be distinguished by the presence of a black band departing the eyes in ventral view, and the lateral branches of uncus slender.

Color.

Body castaneous marked with black and with pronotal collar and sternum tawny, operculum slightly reddish.

Description.

Head (Fig. 16 B ): with a transverse black band departing from each eye, extending through the area of the ocelli to the ambient fissure and the apex of postclypeus; base of the eyes marked with black and with pilus setae; anterior margin of head tightly concave; antennae with a tawny scape, and the pedicel black (flagellum is missing); postclypeus (Fig. 16 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 black and carina tawny, lorum black; mentum and labium tawny; labium long, reaching the sternite II, black at the apex. Pronotum (Fig. 16 B ): with lateral and sub-lateral lobes with wrinkles black setae; ambient fissure with a black band in the middle; pronotal collar tawny with black setae. Mesonotum (Fig. 16 A ): submedian and lateral sigillae and scutal depression marked with black; a rhomb black band present between the sigillae; basisternum 3 (Fig. 16 D ) with well 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. 16 E ) slightly reddish, obtuse and long, 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 and marked with black, posterior margin slightly straight; meracanthus reaches the posterior margin, gutter present in all margins; legs tawny; wings hyaline (Fig. 16 A ); forewings: basal cell opaque anteriorly, and the 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. 16 A ); timbal cover (Fig. 16 F ) flat and short, the apex obtuse almost 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 to 7 with setae and marked with black in anterior margins; sternite VII (Fig. 16 G ) sub-rectangular, the lateral margin convex becoming slightly straight toward the apex, the posterior margin slightly emarginate. Uncus (Fig. 16 H, I ): lateral margin slightly sinuous becoming tightly convex in the line of lateral branches; lateral branches of uncus undeveloped, convex bud-like and slender, the internal margin tightly convex; ventral apophyses with the internal margin forming a sub-rectangular lobe distally directed, posterior margin slightly straight forming an acute angled laterally. Pygofer (Fig. 16 J ) sub-cylindrical; the basal lobe reaching the lateral branches of uncus. Theca (Fig. 16K-M ) dorsally developed with a ventral thecal process; 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: 16.90; width of head including eyes: 7.62; length of the head: 1.89; width of pronotum including pronotal collar: 7.65; length of pronotum including pronotal collar: 2.61; width of mesonotum: 6.66; length of mesonotum: 4.95; length of forewing: 24.21; width of forewing: 8.43; length of hind wings: 11.82.

Distribution.

Brazil ( Goiás).

Figures

Figure 16. Acanthoventris igneus 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.