Acanthoventris Ruschel, 2023
- Dataset
- GBIF Backbone Taxonomy
- Rank
- GENUS
- Published in
- Ruschel, T.P., Bianchi, F.M., Campos, L.A. & Carvalho, G.S. (2023) Total evidence analysis elucidates the tangled systematic scenario within Fidicinini (Hemiptera: Auchenorrhyncha, Cicadidae). Arthropod Systematics & Phylogeny, 81(e85755), 35–77.
Classification
- kingdom
- Animalia
- phylum
- Arthropoda
- class
- Insecta
- order
- Hemiptera
- family
- Cicadidae
- genus
- Acanthoventris
discussion
Remarks. Ruschel et al. (2023) identified specimens of the genus from French Guiana, Brazil, and Peru. In addition to these records, there are also records of what had been considered the type species reported from Argentina, Paraguay and Uruguay (Metcalf 1963 a; Ruffinelli 1970; Sanborn 2011 b, 2013; Sanborn & Heath 2014). These specimens are shown below to represent some of the new species described in Ruschel et al. (2023) and the only previously synonymized species that is resurrected here.
type_taxon
Type species. Cicada drewseni Stål 1854 (Minas Gerais, Brazil).
discussion
Remarks. Ruschel (2023) identified specimens of the genus from French Guiana, Brazil, and Peru. There are also records of what had been considered the type species reported from Argentina, Paraguay and Uruguay (Metcalf 1963 a; Ruffinelli 1970; Sanborn 2011 b, 2013; Sanborn & Heath 2014) although these likely represent some of the new species described in Ruschel et al. (2023).
type_taxon
Type species. Cicada drewseni Stål 1854 (Minas Gerias, Brazil).
description
Description. Head: including eyes, broader than the pronotum (except pronotal collar) and mesonotum; vertex short, wide and slender, the lateral ocelli widely separated, supra-antennal plates not prominent relative to the anterior margin of the head in dorsal view, distant to the eyes; apex of postclyepus convex, without a groove; postclypeus oval in ventral view, flat or slightly salient in lateral view; anteclypeus flat, with a concave basal area. Thorax: pronotal collar wide, not exceeding the lateral margin of eyes; paranota in ventro-posterior position relative to the eyes in lateral view, not exceeding the ventral limit of the eye; cruciform elevation with the central and lateral areas flat, and the arc of the posterior projections obtuse; basisternum 3 flat and prominent relative to the mesocoxae, with protuberances well developed and the posterior margin angled; three segmented tarsi; profemora armed with three spines: the proximal round, leaning forward at the apex, the median sharp and straight, and the distal shorter than the others; posterior tibiae with at least four spines: two dorsal, one of which is at the middle of the tibia and one of which is three-fifths the distance from the base to the apex of the tibia, and two ventral, one of which is three-quarters of the distance from the base to the apex of the tibia and one of which is subapical. Wings hyaline, veins not infuscated; forewings: vein RA divergent to Sc from the basal cell; basal vein of the second apical cell oblique (except in A. claudiae sp. nov.); hindwings with radius vein straight, anal lobe margin slightly convex, slightly prominent relative to jugum margin. - Males: Operculum obtuse with internal angles widely spaced; meracanthus reaching the posterior margin of operculum; lateral metascutellar plates do not cover the timbal chamber; timbal cover flat (except in A. jauffreti comb. nov. and A. tumidus sp. nov.), the medial margin concave; lateral margin tightly concave (near the posterior margin of the operculum) except in A. charrua sp. nov., A. phoenix sp. nov. and A. densusus comb. nov. slightly concave (near the posterior margin of operculum); sternite I short, the space between sternites I and II smaller than metacoxae; sternite II flat, posterior margin arched; median projection of sternite II acute, inserted between the metacoxae; sternite II with the edge well developed, expanded to posterior margin of operculum; sternite III longer than the others; sternite VII sub-triangular; uncal dorsal crest fused and dorsally projected; lateral branches of uncus undeveloped, bud-like; ventral apophyses sub-rectangular and ventrally developed, originating from below the lateral branches of uncus; pygofer sub-cylindrical; basal lobe of pygofer very long, reaching or nearly reaching the apex of uncal dorsal crest; protuberance of the basal plate of pygofer distant to the apex of the basal lobe; basal curve of the aedeagus short, near to the lateral lobes. Theca dorsally developed with a ventral thecal process; lateral thecal process absent; vesica internally and externally bearing the cornuti. - Females: Operculum obtuse, meracanthus longer than the posterior margin; sternite VII wider than it is long, with a deep, triangular or obtuse groove; the dorsal beak of tergite 9 of the same length than the ovipositor sheath; ovipositor with six to nine teeth.
diagnosis
Diagnosis. The new genus differs from any other Fidicinini for the following combination of features: head (including eyes) broader than pronotum (except pronotal collar) and mesonotum; vertex short; supra-antennal plate not prominent relative to the anterior margin of head in dorsal view; pronotal collar wide, not exceeding the lateral margin of eyes; paranota posterior to eyes in lateral view; operculum obtuse with internal angles widely spaced (males); meracanthus reaching the posterior margin of operculum; forewings hyaline, veins not infuscated; vein RA divergent to Sc; anal lobe margin in hindwings slightly convex, slightly prominent relative to jugum margin; timbal cover flat (except in A. jauffreti comb. nov. and A. tumidus sp. nov.); median projection of sternite II acute, inserted between the metacoxae; sternite II with the edge well developed; sternite III longer than IV; sternite VII sub-triangular (except in A. igneus sp. nov., A. jauffreti comb. nov., A. tumidus sp. nov., and A. olivarius sp. nov.); uncus shorter than the basal lobe in lateral view; uncal dorsal crest fiused and dorsally projected; lateral branches of uncus undeveloped, bud-like; ventral apophyses sub-rectangular and ventrally developed; basal lobe of pygofer very long, reaching or nearly reaching the apex of uncal dorsal crest, clearly delimited with the lateral margin of the pygofer; protuberance of the basal plate of pygofer distant to the apex of the basal lobe; basal curve of the aedeagus short, near to the lateral lobes. Theca dorsally developed with a ventral thecal process.
distribution
Distribution. French Guiana, Brazil and Peru.
etymology
Etymology. The name refers to the long, acute median projection of sternite II, like a thorn. Latin, m.: acanthus, thorn; ventris, belly. The genus is masculine.
Name
- Homonyms
- Acanthoventris Ruschel, 2023