Acanthoventris tumidus 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 tumidus Ruschel sp. nov.

Figs 20 , 21

Type locality.

Cusco, Peru.

Type material.

Holotype: Male (Fig. 20 A ) ( MUSM), Peru, Cusco, 3 rd km E Quincemil, 13°13'03"S, 70°43'40"W, 633 m, 20.VIII.2012, Santos, A.P.M. & Takiya, D.M. - Paratypes (male and female): male same data as holotype ( DZRJ) ; female (Fig. 21 A ), ( MUSM) Peru, Madre de Dios, 12 rd km E Mazuko, pte. Amanapu, 13°02'511"S, 70°20'459"W, 382 m, 18.VIII.2012, Santos, A.P.M. & Takiya, D.M .

Genbank access number.

OP548617 ( EF 1-alpha).

Etymology.

The specific name refers to the timbal cover tumid. Latin: tumidus, swollen.

Diagnosis.

The species can be distinguished from all other species of Acanthoventris gen. nov. by the following combination of features: longitudinal groove of the postclypeus very shallow; posterior margin of basisternum 3 angled with a pair of posterior projections present near the insertion; operculum triangular, very short (not completely covering the timbal cavity), the anteromedian margin inclined; tumid timbal cover. This species has a similar morphology to A. jauffreti comb. nov. due the tumid timbal cover, but A. tumidus sp. nov. can be distinguished by the convex medial margin of timbal cover, and the apex of the basal lobe reaching the apex of ventral apophyses.

Color.

Body green and castaneous marked with black.

Description.

Head (Fig. 20 B ) with a wide black band through to the supra-antennal plates extending to the margin between the vertex and the apex of the postclypeus; anterior margin of head slightly convex; posterior margin of eyes marked with black; antennae with a tawny scape, and the pedicel tawny basally, becoming dark castaneous apically, flagellum dark castaneous; postclypeus (Fig. 20 C ) unmarked, oval in ventral view and flat in lateral view, the apex not prominent in dorsal view relative to the supra-antennal plates; longitudinal groove very shallow; anteclypeus and carina tawny; lorum tawny with a black band in the proximal margin; rostrum tawny; labium short, reaching the base of basisternum 3, black at the apex. Pronotum (Fig. 20 B ): fissure of the pronotum marked in black; ambient fissure with an inconspicuous black band in the middle; paranota visible and wide, not reaching the eyes in dorsal view. Mesonotum (Fig. 20 A ): submedian sigillae marked with black (in the holotype, the bande occupy the space between and posterior to the sigillae); lateral sigillae with a castaneous band; base of mesonotum with a castaneous band extending to the lateral area of the cruciform elevation; cruciform elevation not covering tergite 1; apex of the posterior projections of the cruciform elevation obtuse; scutal depression with a black band; basisternum 3 (Fig. 20 D ) with well-developed protuberances relative to the median insertion and with a black band laterally, the posterior margin angled, a pair of posterior projections present near the insertion; operculum (Fig. 20 E ) triangular, very short, not covering the timbal cavity and the apex does not reach the auditory capsule, the internal angles wide and short, the apices obtuse and widely spaced; anteromedian margin inclined with a black band extending to the anterior margin of the meracanthus, the lateral margin concave, becoming straight posteriorly and longer than the posterior margin, the posterior margin almost straight; meracanthus does not reach the posterior margin; gutter present in all margins; legs tawny; wings hyaline, forewings: basal vein of the second apical cell oblique; hindwings: radius vein arched. Abdomen (Fig. 20 A ) subcylindrical, the length equivalent to the combined length of the head and thorax in dorsal view; timbal cover (Fig. 20 F ) tumid, middle third of anteromedial margin convex; tergites 2 to 8 with a stain in black anteriorly; sternite VII (Fig. 20 G ) sub-rectangular, the lateral margin concave, becoming convex apically, the posterior margin linear, not emarginate. Uncus (Fig. 20 H, I ): lateral margin slightly convex; lateral branches of uncus undeveloped, convex bud-like, the internal margin convex; ventral apophyses ventrally developed originating from below the lateral branches of uncus; internal margin forming a sub-rectangular distally directed, posterior margin tightly acute. Pygofer (Fig. 20 J ) sub-cylindrical; basal lobe long, reaching the apex of ventral apophyses, narrowing towards the rounded apex. Theca (Fig. 20K-M ) dorsally developed with two ventral thecal processes: the right one serrated and the left one acute at the apex. Vesica originates in a fissure at the distal third of the theca, extruded and ornamented with cornuti in the inner surface. - Female (Fig. 21A-E ): The female presents the same somatic characteristics as the male (Fig. 21 A ) except the operculum is smaller (Fig. 21 C ); sternite II (Fig. 21 D ) longer with a straight lateral margin that is convergent towards the apex, the posterior margin straight directed anteromedially to a concave middle groove; dorsal beak of segment 9 smaller that of the ovipositor sheath (Fig. 21 E ). The ovipositor bears eight teeth.

Measurements (in millimeters).

Holotype male. Length of body: 22.30; width of head including eyes: 10.27; length of the head: 2.52; width of pronotum including pronotal collar: 9.84; length of pronotum including pronotal collar: 3.50; width of mesonotum: 8.40; length of mesonotum: 6.76; length of forewing: 32.85; width of forewing: 11.00; length of hind wings: 15.82. Paratypes (male and female). Length of body: 22.71, 22.29; width of head including eyes: 10.85, 10.55; length of the head: 2.81, 2.74; width of pronotum including pronotal collar: 10.37, 10.34; length of pronotum including pronotal collar: 3.69, 3.58; width of mesonotum: 8.79, 8.55; length of mesonotum: 6.90, 7.08; length of forewing: 32.86, 33.17; width of forewing: 11.35, 10.68; length of hind wings: 16.60, 16.96.

Distribution.

Peru.

Figures

Figure 20. Acanthoventris tumidus 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.

Figure 21. Acanthoventris tumidus 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.