Cornicola Ohara & Hayashi 2022, gen. nov.
Creators: name: Ohara, Naomichi
name: Hayashi, Masami
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Cicadellidae
Cornicola

description: Cornicola gen. nov.
Type species: Cornicola mizuki sp. nov.
Head narrower than pronotum; crown short, rounded, with anterior and posterior margins evenly curved anteriorly and parallel, with coronal suture indistinct; face elongate, longer than wide, with frontoclypeus strongly swollen and anteclypeus swollen; antennal ledge developed; ocelli vestigial on face situated median level of eyes. Pronotum large and about twice as long as mesonotum, with posterior margin convex and slightly emarginate near middle; pronotum and mesonotum strongly convex, forming two humps in lateral view; mesonotum concave along scutellar suture. Fore wing with cross vein r-m at base of 2 nd apical cell, veins RP and MP’ arising from r cell, and vein MP”+CuA’ arising from m cell; 1 st apical cell (outer apical cell) elongate, more than twice as long as width; 2 nd apical cell truncated basally, with base wider than base of 3 rd apical cell; 3 rd apical cell curved anteriorly, widened apically, with basal vein MP” shorter than CuA’; 4 th apical cell (inner apical cell) with basal vein CuA” as long as CuA’. Hind wing gradually narrowed apicad; ambient vein along costal margin ScP+RA reduced near base of RP+MP’; vein RP fused to MP’ in apical ¼; vein CuA branched more basally than or near point confluent with MP”; vein AA+AP’ branched. Front femur with seta AM1 stout, situated near ventral margin; intercalary row composed of 1–2 large basal setae and 10–12 smaller setae in apical half. Hind femur with macrosetal formula 2+1+1; tibia with setal row AV composed of 5 preapical macrosetae. Male abdominal sternal apodemes well developed; female 7 th sternite wider than long, with ventral surface obliquely folded, and concave at middle, with caudal margin folded and produced to form two pairs of small, rounded posterior lamellae.
Male genitalia. Pygofer large with basal margin widely emarginate in lateral view, with lobe widely produced and rounded caudally, bearing numerous setae on posterior angle and minute setae scattered on pygofer surface, with acute process near middle of dorsal margin. Subgenital plates united to valve, large and thin, fused to each other in basal half; plate bearing oblique row of 5–6 macrosetae in apical half. Style slender, strongly bent and hooked inward apically, with posterior portion extremely long, about 3 times as long as basal apodeme. Connective compressed and elongate, Y-shaped, with stem longer. Aedeagus robust and cylindrical, situated near middle of pygofer, with dorsal apodeme laterally developed, lobe-like, with preatrium indistinct; shaft tubular, bearing pair of arched apical processes; gonopore subapical, ventral from tip.
Distribution. Japan.
Remarks. The new genus Cornicola is similar to Igutettix Matsumura, Vilbasteana Anufriev, Koreoneura Hossain et Kwon, 2021 and Sweta Viraktamath et Dietrich, 2011 in the comparatively large body-size, the large pronotum and pronotum and mesonotum humped. In the features of the male genitalia, the subgenital plates fused to each other and together to valve, and the elongate, inwardly bent style show similarity to those of Igutettix and Koreoneura. Therefore this new genus seems closely related to these genera, but it is distinguished from Koreoneura by the fore wing with 1st apical cell elongate and 2nd apical cell truncated basally, from Igutettix by the hind wing CuA vein branched more basally. Moreover this new genus is characterized by the widely emarginate basal margin of pygofer in lateral view, the style bearing an extremely long posterior portion, and the robust and cylindrical aedeagus.
Etymology. This genus is masculine in gender and it is formed by combining of Latin words, cornus (dogwood) with –cola, and refers to the host plant of the type species.
description: Published as part of Ohara, Naomichi & Hayashi, Masami, 2022, Recognition of the genera Igutettix Matsumura and Vilbasteana Anufriev (Hemiptera: Cicadellidae: Typhlocybinae), with discovery of a new related genus from Japan, pp. 63-74 in Zootaxa 5125 (1) on pages 70-71, DOI: 10.11646/zootaxa.5125.1.4, http://zenodo.org/record/6420475