Ingcainyenzane umgeniensis, Sanborn & Villet, 2020

Sanborn, Allen F. & Villet, Martin H., 2020, A new genus and three new species of South African Cicadettini (Hemiptera Cicadidae: Cicadettinae), Zootaxa 4885 (4), pp. 579-590 : 586-589

Ingcainyenzane umgeniensis n. gen., n. sp. Sanborn and Villet

( Fig. 3 )

Type material. Holotype. “ SOUTH AFRICA: Kwazulu Natal / Umgeni Valley Nat. Res., nr. / Howick , trib. To Umgeni R. along / Dwarfs Dwadle tr., 29º 28.667’S / 30º 15.701’ E, el. 3498 ft., blacklight / 10–11.i.2000, K. Kjer & R. Blahnik” male ( UCDC).

Etymology. The name is a combination of umgeni- for the type locality and –ensis (L. suffix denoting place).

Description. Piceous marked with tawny, castaneous and ochraceous.

Head. Head slightly wider than mesonotum, piceous with tawny mark in posterior epicranial suture, castane-ous mark on medial supra-antennal plate. Covered with short silvery pile on vertex, long silvery pile posterior to eye reaching, some reaching to middle of prothorax. Ocelli rosaceous, eyes dark castaneous. Ventral head piceous, anteromedial lorum dark castaneous, covered with thick silvery pile on lorum and gena. Postclypeus piceous with dark ochraceous lateral and margins extending into lateral transverse grooves, tawny fasciae on midline ventral to apex, and dark castaneous ventroposterior margin. Postclypeus with nine transverse grooves, long silvery pile radiating from within transverse grooves and lateral margin. Anteclypeus piceous, with dark castaneous on anterior carina, covered with long silvery pile. Mentum dark tawny, labium dark castaneous, rostrum radiating long silvery pile, reaching to middle coxae. Antennal segments piceous except dark tawny distal scape.

Thorax. Dorsal thorax piceous. Pronotum with dark castaneous lateral posterior pronotal collar between posterior terminus of lateral fissure and lateral angle of pronotal collar, covered with short silvery pile and radiating long silvery pile. Mesonotum piceous, dark castaneous fasciae along anterior parapsidal suture and extending posteriorly from posterior parapsidal suture to anterior terminus of anterior arm of cruciform elevation, ochraceous spot on anterolateral mesonotum, anterior wing groove ochraceous, posterior margin of posterior wing groove tawny, cruciform elevation castaneous, piceous between anterior arms, distal posterior anterior arms ochraceous. Metanotum piceous with visible region posterior to cruciform elevation dark tawny on either side of piceous midline. Dorsum with long silvery pile, laterally, posteriorly, between anterior arms of cruciform elevation, in wing groove, and on posterior metanotum. Ventral thoracic segments piceous medially, ochraceous laterally, covered with long, dense silvery pile.

Wings. Fore wings and hind wings hyaline with eight and five apical cells respectively. Venation piceous except ochraceous costal margin, radius & subcostal vein, cubitus posterior + anal vein 1, subcostal vein and radius anterior 1 to proximal apical cell 1. Pterostigma absent. Basal membrane of fore wing white with gray posterior margin. Basal cell infuscated in anterior half. Hind wing venation piceous with ochraceous costal margin, radius & subcostal vein to separation with costal margin, median vein, proximal median vein 1, proximal median vein 2, radiomedial and mediocubital crossveins. All but distal anal cell 3 and proximal half of anal cell 2 infuscated, anal vein 3 light gray in anal cell 2 and anal cell 3.

Legs. Legs dark castaneous, coxae, trochanters, and femora, striped with piceous, fore femur with ochraceous posterior fascia and spot on distal terminus, red mark on posterior fascia and terminal spot, middle and hind tibiae with ochraceous distal terminus. Fore femora with four oblique spines, proximal longest, secondary intermediate in length and slightly curving, tertiary spine smaller and more angled than secondary spine, with very small apical spine extending from distal to base of tertiary spine, all dark castaneous. Fore tibiae dark castaneous with annular ochraceous mark about one third distance from base and posterior ochraceous fascia on proximal half of tibia, middle and hid tibiae ochraceous except for dark castaneous spot on proximal base and distal annular mark. Fore tarsi dark castaneous, middle and hind tarsi with red mesotarsus and proximal two thirds of pretarsus, tibial spurs and comb castaneous, proximal spines with ochraceous base. Pretarsal claws dark castaneous. Legs radiating long silvery pile.

Operculum. Male operculum with smoothly curved lateral and posterior margins, domed near base, lateral side bent dorsally at an acute angle, not covering tympanal cavity or reaching to anterior of sternite II, ochraceous with piceous spot on lateral base and piceous anterior area medial to medial base extending to anteromedial margin, ochraceous along margin with meracanthus, long silvery pile radiating from operculum, denser at base. Medial margins reaching to middle of hind trochanter, separated by ventral extension of sternite I, smoothly curving to base. Meracanthus small, triangular, piceous with ochraceous tip, not reaching anterior margin of operculum.

Abdomen. Abdominal tergites piceous, tergite 1 with dark castaneous posterior margin, tergites 3–7 piceous with ochraceous hind margin and ochraceous mark on lateral margins, tergite 8 piceous with dark castaneous posterior margin and ochraceous lateral margins, tergites covered with long and short silvery pile. Timbal cover absent, timbal completely exposed, timbal with five ribs, extending below wing base. Male sternites and epipleurites ochraceous except piceous sternite I, midline and lateral spot of sternite II, transverse piceous fascia on anterior midline of sternite III, sternites III–VI with dark castaneous mark on midline, longitudinal castaneous fascia on medial epipleurites III–VII, sternite VIII elongated, ochraceous, radiating castaneous pile posteriorly, V-shaped when viewed from posterior. Lateral sternites and epipleurites with short silvery pile.

Genitalia. Male pygofer piceous with ochraceous ventral margins of upper pygofer lobe, distal shoulder undeveloped, dorsal beak small, pointed, continuing curve of pygofer when viewed from the side. Upper pygofer lobe curved adpressed to pygofer, radiating long silvery pile, connection to dorsal beak straight, pygofer basal lobes elongated, flattened, adpressed to pygofer, terminating at base of upper pygofer lobe with short golden pile radiating medially from margin. Anal styles red with dark castaneous lateral surfaces, anal tube red. Median uncus lobe red, short, flattened, straight at base to semicircular terminus when viewed from above. Claspers well developed, dark castaneous except for piceous regions along midline when meeting, base angled mediad and radiating short castaneous pile, claspers meeting along midline separated from median uncus lobe, curving anterolaterad to terminate at approximate right angle to base, tapering and diverging laterally to separate points, recurving towards base at apex when viewed from the side. Aedeagus tubular with bifurcated terminus formed from pseudoparameres, castaneous, restrained by claspers.

Female currently unknown.

Measurements (mm). Male. N = 1. Length of body: 13.8; length of fore wing: 11.8; width of fore wing: 5.5; length of head: 1.7; width of head including eyes: 3.7; width of pronotum including suprahumeral plates: 3.9; width of mesonotum: 3.4.

Diagnosis. This new species can be distinguished from both I. irhiniensis n. gen., n. sp. and Ingcainyenzane nolukhanyoensis n. gen., n. sp. by the timbal that extends below wing base, male sternite VIII being longer than the pygofer, and the short extension of the pygofer upper lobe in the new species.

Distribution. The species is known only from the type locality on the Umgeni (Mngeni) River catchment, South Africa. This species expands significantly the range of the genus eastward.

Notes on the biology of the species. The species is known from a specimen provided to the authors. No specific information on the biology of the species is known but images of the area where it was collected shows a grassy habitat similar to where the other species of the genus were collected.

Figures

FIGURE 3. Ingcainyenzane umgeniensis n. sp.: A, holotype male habitus; B, holotype male dorsum; C, holotype male timbal; D, holotype male operculum; E, holotype male lateral view of genitalia; F, holotype male posterior view of genitalia; G, holotype male fore femur. Scale bar: A, 1 cm; B, 2 mm; C–G, 1 mm.