Timbaltransversa pronotosigillata Sanborn 2021, n. gen., n. sp.
Creators: name: Sanborn, Allen F.
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Cicadidae
Timbaltransversa
Timbaltransversa pronotosigillata

description: Timbaltransversa pronotosigillata n. gen., n. sp.
(Fig. 6)
Type material.— Holotype. “ MADAGASCAR: Province / d’Antananarivo 3 km 41° NE / Andranomay, 11.5 km 147° / SSE Anjozorobe // elev 1300m, 5–13 Dec 2000 / 18° 28’ 24” S, 47° 57’ 36” E / coll. Fisher, Griswold et al. // California Acad of Sciences / montane rainforest, beating low vegetation BLF2398 // CASENT / 3001071” male (CASC) (CASTYPE number 20145). Paratype. “ MADAGASCAR: Province / Fianarantsoa, Parc National / Ranomafana, Belle Vue at / Talatakely, elev 1020 m / 12—19 February 2002 // 21º 15.99’S, 47º 25.21’E / collector: R. Harin’Hala / California Acad of Sciences / malaise, secondary tropical / forest MA-02-09C-16 // CASENT / 3004992”, one male (AFSC).
Etymology.—The name is a combination of pronoto – for the pronotum and –sigillata (L. sigillatum, adorned with little figures or marks) in reference to the piceous markings of the pronotum.
Description
Head and pronotum testaceous marked with piceous and castaneous, mesonotum testaceous marked with castaneous, and abdomen testaceous marked with piceous and castaneous. Mesonotum with areas of dense silvery pile, abdominal tergites covered with dense silvery pile.
Head
Head slightly wider than mesonotum, testaceous with piceous posterior to eye, piceous posterior to lateral ocelli, extending on either side of lateral ocellus as castaneous mark and surrounding lateral ocellus, lateral mark terminating in anterior cranial depression, medial extension angled to meet posterior to and surrounding median ocellus, mark extending anteriorly along midline to frontoclypeal suture, castaneous spot on anterior epicranial suture anterior arm, light castaneous mark extending from spot on epicranial suture anterior arm to lateral vertex anterior to eye in paratype. Dorsal head covered with short silvery pile, longer and denser posterior to eye. Ocelli rosaceous, eyes dark castaneous. Gena testaceous with piceous mark ventral to antennae and piceous margin with lorum, gena castaneous with testaceous margin in paratype, lorum castaneous with piceous anteromedial, anterior, and lateral margins, short silvery pile and white pubescence on lorum and gena. Postclypeus testaceous, longitudinal castaneous fascia on either side of sulcus not reaching apex, fusing across posterior midline, fusing across anterior midline in paratype, posterolateral margin castaneous, marks connected posteriorly in paratype, castaneous on either side of dorsal midline, piceous in paratype, ten transverse grooves. Anteclypeus testaceous, central carina castaneous, posterior carina, posterior and posterolateral margins piceous, covered with long silvery pile and white pubescence. Mentum ochraceous with castaneous proximal and distal margins, labium castaneous striped with piceous distally with castaneous tip, rostrum radiating long silvery pile, reaching to posterior trochanters. Scape, distal pedicel and proximal first flagellar segment testaceous, remaining antennal segments piceous.
Thorax
Pronotum testaceous, piceous triangular marking on medial disk extending laterally into central paramedian fissure and posteriorly lateral to midline, recurving into posterior paramedian fissure, continuing across posterior dorsolateral disk into all but anterior lateral fissure, expanding into irregular mark on posterocentral dorsolateral disk and across anterior dorsolateral disk, anterior mark in lateral fissure extending as comma-shaped mark on majority of central and posterior lateral disk, transverse dark castaneous fascia in ambient fissure posterior to dorsolateral disk. Pronotal collar dark ochraceous. Pronotum covered with short silvery pile. Mesonotum testaceous with castaneous submedian sigillae, mottled castaneous in lateral sigillae, central castaneous fascia widening posteriorly and expanding laterally anterior to anterior arms of cruciform elevation, crossing over distal anterior arms of cruciform elevation to posterior mesonotum, castaneous spot in anterior wing groove, cruciform elevation ochraceous. Metanotum ochraceous posteriorly, testaceous posterolaterally, castaneous laterally. Dorsum with short silvery pile, denser on dorsolateral region, very dense longer silvery pile between anterior arms of cruciform elevation, between anterior and posterior arms of cruciform elevation, on posterior mesonotum, in wing groove, and on posterior metanotum. Ventral thoracic segments ochraceous, castaneous basisternum 2, katepisternum 2, lateral trochantin 2, and basisternum 3, covered with dense, long silvery pile.
Wings
Fore wings and hind wings hyaline with eight and six apical cells respectively. Venation dark ochraceous proximally, becoming castaneous distally, piceous fascia along basal cell at base of radius & subcostal vein, small piceous spot on arculus, piceous anal vein 2+3. Basal cell hyaline. Pterostigma present, reddish. Basal membrane of fore wing gray. Hind wing venation ochraceous with castaneous marginal vein. Proximal anal cell 3, anal cell 3 along medial margin not reaching distal end, anal cell 3 along anal vein 3 to distal curve, anal cell 2 along anal vein 3 to curve, anal cell 2 along proximal anal vein 2 light gray, infuscation distal to light gray in anal cell 3, distally in anal cell 2 along anal vein 3, distally in anal cell 2 at distal terminus of anal vein 2 expanding around distal anal cell 2, and on wing margin across distal anal vein 2.
Legs
Legs testaceous, coxae, trochanters marked with castaneous, proximolateral fore femora castaneous, middle and hind femora striped with castaneous, tibiae testaceous, castaneous distally, tibial spurs and comb castaneous, tarsi testaceous, pretarsal claws testaceous with castaneous tips. Fore femora with primary spine spine-like, angled to femoral axis, secondary spine triangular, angled slightly less than primary spine, tertiary spine also triangular, parallel to primary spine, apical spin very short, extending from distal base of tertiary spine, spines decreasing in length distally, all spines dark castaneous, piceous mark on base of primary and secondary spines. Meracanthus an elongated triangle, ochraceous with castaneous base, not reaching anteromedial margin of operculum. Legs with short silvery and radiating long silvery pile.
Operculum
Male operculum ochraceous with castaneous spot on base, lateral, medial and posterior margins straight connected by rounded margins forming an approximate isosceles triangle with apex oriented posterolaterally, not covering tympanal cavity medially, only distal apex reaching to anterior of abdominal sternite II, medial margins well separated. covered with short silvery pile, radiating long silvery pile from opercular margin.
Abdomen
Abdominal tergite 1 hidden by metanotum, tergite 2 with castaneous posterior margin, tergite 3 testaceous with castaneous mark on anterior margin on either side of midline, castaneous spot laterally, and castaneous posterolateral margin, tergites 4–7 testaceous with lateral castaneous spot, tergite 8 dark castaneous anteriorly, piceous in paratype, with testaceous dorsoposterior and castaneous lateroposterior regions, tergites separated by red membrane, covered with silvery pile except piceous pile on dorsum of tergites 4–8. Timbal cover absent, timbal completely exposed, oriented transversely to body axis, timbal with ten long and nine intercalary ribs. Male sternite I ochraceous, posteromedially castaneous, sternite II ochraceous with castaneous posteromedial margin and lateral regions, auditory capsule dark castaneous, mainly castaneous in paratype, sternite III testaceous with castaneous anterior margin, mainly castaneous in paratype, sternites IV–V testaceous with red posterior margin, sternite VI castaneous, sternites IV–VI piceous with red posterior margin in paratype, sternite VII dark castaneous, piceous in paratype. Epipleurites testaceous marked anteromedially with castaneous, marked with piceous in paratype. Sternites and epipleurites covered with silvery pile, radiating long silvery pile from sternite VII. Sternite VIII castaneous anteriorly, testaceous posteriorly, radiating silvery pile, V-shaped when viewed from posterior, posterior margin acutely angled.
Genitalia
Male pygofer testaceous marked with castaneous ventrally, extending across lateral surface to dorsum, distal shoulder undeveloped, reflexed medially with posteroventral point, dorsal beak pointed, narrowly triangular, longer than anal styles, posterior pygofer radiating long golden pile posteriorly and dorsally. Upper pygofer lobe welldeveloped, flattened, approximate isosceles triangle bent mediad so tips almost meeting at midline, pygofer basal lobes short but broad, posteromedial margin smoothly curved, angled medially, radiating long golden pile from posteromedial margin. Anal styles piceous radiating short golden pile, anal tube testaceous. Claspers roughly square, extending to meet medially under aedeagus, anteromedial corner bent laterad and terminating in a semicircular extension, claspers covered with long golden pile. Aedeagus large, tubular with expanding terminus with multiple spine-like appendages, castaneous with ochraceous distal membrane, restrained by claspers.
Female is unknown.
Measurements (mm).—N = 2 males, mean (range). Length of body: 12.28 (12.00–12.55); length of fore wing: 17.60 (16.85–18.35); width of fore wing: 6.45 (6.45–6.45); length of head: 2.53 (2.50–2.55); width of head including eyes: 4.48 (4.40–4.55); width of pronotum including suprahumeral plates: 4.85 (4.80–4.90); width of mesonotum: 4.25 (4.20–4.30).
Diagnosis.—The generic characters can distinguish the new species from other Madagascar Parnisiini. Particularly, the combination of the nearly transverse timbal and the large mediad turned upper pygofer lobes.
Distribution.—The species is only known from the type series collected in Antananarivo and Fianarantsoa Provinces, central and southeastern Madagascar.
description: Published as part of Sanborn, Allen F., 2021, The cicadas (Hemiptera: Cicadoidea: Cicadidae) of Madagascar including a new tribe, five new genera, twelve new species, four new species synonymies, five revised species status, ten new combinations, new tribal assignments for four genera, one new subtribe synonymy, a checklist and key to the species, pp. 1-79 in Zootaxa 4937 (1) on pages 44-47, DOI: 10.11646/zootaxa.4937.1.1, http://zenodo.org/record/4559438