Acanthoventris iara 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 iara Ruschel sp. nov.

Figs 14 , 15

Type locality.

Amazonas, Brazil.

Type material.

Holotype: Male ( INPA) (Fig. 14A ), Brasil, Amazonas, Manaus, BR-174 Km 50 , ZF-2 Km21 , 02°38'16"S, 60°09'26"W, 13-27.XII.2012, F.F. Xavier F; G.Z. Lopes, A.L. Aguiar; A.L. Rodrigues, J.R. de Oliveira, Armadilha de Luz, Mista. Paratypes, 4 males and 2 females: female (Fig. 15A ), same data as holotype ( INPA) ; female ( INPA), Brasil, AM, Presidente Figueiredo , Am-240 , Km 24 , 02 35 21 S 60 06 55 W, 13-17.VII.2009, F.F. Xavier F; R. Machado, S. Oliveira; C. Schwertner, R.A.P. Freitas Silva, Armadilha de luz mista de mercúrio Lençol ; 2 males ( INPA), Brasil, RR, Amajari, Serra , Tepequém 03°44'45.5"N, - 61°43'39"W, 09-10.VII.2010, 21-00:00, J.A. Rafael, F.F. Xavier F°, R. Machado, R.Freitas, luminosa dossel ; male ( INPA), Brasil, AM, Manaus, Rod. AM010 , km 50 , ZF-2, km 14 , proximo a torre , 02°35'S, 60°06"W 6.III.2011, 00-03:00h. Armadilha luminosa móvel. J.T. Camara; P. Dias, J.A. Rafael leg .; male ( DZRJ), Nascente Rio Pimenta divisa Vilhena - Colorado d'Oeste - RO, 13.XI.1988, J. Becker col., Dorisiana drewseni ( Stål, 1854) A. Sanborn det. V/2009 .

Etymology.

The specific name refers to the distribution of the species. Iara is a mermaid from Brazilian folklore who lives in the Amazon River, who lures men singing with their enchanting music.

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 convex; posterior margin of basisternum 3 tightly acute; lateral margin of operculum marked with black and convex, becoming slightly straight toward the apex; the internal margin slightly concave; lateral margin of uncus straight becoming slightly convex in the middle and straight toward the apex of ventral apophyses. This species has a similar morphology to A. igneus sp. nov. due the anterior margin of head tightly concave and lateral margin of operculum marked with black and convex. A. iara sp. nov. can be distinguished from A. igneus sp. nov. by the pronotal collar and wing groove olive-green, the absence of a black band departing the eyes in ventral view, and the lateral branches of uncus wider.

Color.

Body tawny with head, thorax and abdomen marked with black; pronotal collar and wing groove olive-green.

Description.

Head (Fig. 14 B ): with a transverse wide black band departing from each eye, covering the ocelli region and reaching the apex of postclypeus; anterior margin of head tightly concave; base of the eyes marked with black and with silver setae; antennae with a tawny scape, and the pedicel and flagellum dark castaneous; postclypeus (Fig. 14 C ) rounded in ventral view unmarked and with the longitudinal groove shallow; slightly salient in lateral view; apex slightly prominent in dorsal view relative to the supra-antennal plates; anteclypeus (Fig. 14 C ) black with a tawny carina; lorum black; rostrum with a tawny mentum; labium short, extending to the base of basisternum 3, marked with castaneous (Fig. 14 D ). Pronotum (Fig. 14 B ): pronotal collar olive-green. Mesonotum (Fig. 14 A ): submedian sigillae and lateral sigillae marked with black; scutal depression unmarked; wing groove olive-green; basisternum 3 (Fig. 14 D ) marked with dark castaneous anteriorly, with well-developed protuberances relative to the median insertion, posterior margin forming an acute angle; cruciform elevation not covering tergite 1; apex of the posterior projections obtuse; operculum (Fig. 14 E ) short, not covering the timbal cavity and the apex not reaching the auditory capsule; anteromedian margin marked with dark castaneous; lateral margin marked with black and convex, becoming slightly straight toward the apex; posterior margin slightly straight; gutter present from the lateral to the posterior margin; wings hyaline (Fig. 14 A ). Abdomen (Fig. 14 A ) subcylindrical, the length equivalent to the combined length of the head and thorax; timbal cover (Fig. 14 F ) flat and broad (almost as wide as the base), the apex obtuse anteriorly directed, almost reaching the lateral metascutellar plates; middle third of anteromedial margin concave; ventral anterior margin tightly concave (away from the posterior margin of operculum); tergites: 1 totally marked with black, 2 almost totally marked with black, except the timbal covers; tergites 3 to 8 with the anterior margin marked with black; median projection marked with castaneous, only the middle tawny; edge of sternite II castaneous (Fig. 14 D ); sternite VII sub-rectangular, with the lateral margins convex becoming slightly straight toward the apex, posterior margin slightly emarginate. Uncus (Fig. 14 H, I ): lateral margin straight becoming slightly convex in the middle and straight toward the apex of 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 the internal margin sub-rectangular; posterior margin sinuous forming an acute angle posteriorly directed. Pygofer (Fig. 14 J ) sub-cylindrical, the basal lobe very long nearly reaches the uncal dorsal crest. Theca (Fig. 14K-M ) dorsally developed with a ventral thecal process; vesica internally and externally bearing the cornuti. - Female (Fig. 15A-E ): The female presents the same somatic characteristics as the male (Fig. 15 A ) except the operculum (Fig. 15 C ) is smaller, sternite VII (Fig. 15 D ) longer with a slightly concave lateral margin and a sinuous posterior margin with an obtuse middle groove; the tip of the ovipositor with the same length of the dorsal beak of segment 9 (Fig. 15 E ); the ovipositor bears eight teeth.

Measurements (in millimeters).

N = Holotype and paratypes (5 males and 2 females), mean (range). Length of body: male 19.22 (22.75-17.50), female 17.635 (17.64-17.63); width of head including eyes: male 8.698 (9.09-8.26); female 8.54 (8.64-8.44); length of the head: male 1.85 (1.62-1.97), female 1.575 (1.71-1.44); width of pronotum including pronotal collar: male 8.52 (8.90-7.82), female 8.28 (8.28-8.28); length of pronotum including pronotal collar: male 3.00 (2.72-3.26); female 2.835 (2.79-2.88); width of mesonotum: male 7.47 (6.80-7.88), female 7.065 (7.20-6.93); length of mesonotum: male 5.64 (5.94-5.10); female 5.49 (5.58-5.40); length of forewing: male 27.31 (28.80-25.38), female 26.385 (26.60-26.17); width of forewing: male 8.96 (9.73-8.00), female 9.095 (9.25-8.94); length of hindwings: male 12.98 (14.19-11.25), female 12.58 (12.90-12.26).

Distribution.

Brazil (Roraima, Amazonas, Rondônia).

Figures

Figure 14. Acanthoventris iara 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 15. Acanthoventris iara 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.