Torresia lariojaensis Sanborn & Heath, 2014

Sanborn, Allen F. & Heath, Maxine S., 2014, The cicadas of Argentina with new records, a new genus and fifteen new species (Hemiptera: Cicadoidea: Cicadidae), Zootaxa 3883 (1), pp. 1-94 : 39-41

Torresia lariojaensis Sanborn & Heath , sp. n.

( Figure 12 )

Torresia lariojaensis nom. nud. Sanborn et al. 2011a, p. 5, Table 3.

Type material.— ARGENTINA. HOLOTYPE: male ( INHS), “ La Rioja / 2 km W. of Paganzo / 5 Jan. 1987 / M.S. Heath Coll. ” . PARATYPES: one male ( MSHC) “ La Rioja / 2 km W. of Paganzo / 5 Jan. 1987 / Al Sanborn Coll.” .

Etymology. The species is named for the province in which the type series was collected.

Diagnosis. —The species is similar in general appearance to T. sanjuanensis sp. n. but is larger (body length 17.95 mm vs. 16.3 mm), marked with castaneous and tawny rather than tawny, there is no spot on the supraantennal plate and vertex, no large dorsal mesothoracic marking, a stridulatory apparatus with nine ribs, a straight posterior opercular margin, timbal with 12 long and 11 short ribs, and the left spine of the aedeagus has five cornuti.

Description of male

Coloration.—Ground color piceous marked with castaneous and tawny.

Head.—Slightly wider (about 1.1X) than mesonotum, piceous with golden pile, more dense in the sutures and longer posterior to eye. Ocelli rosaceous, eyes castaneous. Postclypeus piceous, sulcate, 10 transverse grooves, golden pile laterally and within central sulcus. Anteclypeus piceous with long golden pile. Rostrum piceous except tawny labrum, reaching to middle trochanter. Gena piceous with short golden pile. Lorum piceous with tawny lateral margin and castaneous anterior margin. Antennae piceous castaneous.

Thorax.—Pronotum castaneous with large medial black mark expanding laterally, anteriorly and posteriorly within the ambient fissure, dark castaneous marking in lateral fissure and posterior paramedian fissure, anterior mark of the paramedian fissure connected with posterior mark in the lateral fissure, and extended on disc between lateral and ambient fissures. Pronotal collar castaneous with posterior margin, including lateral angle of collar, tawny. Short golden pile, more dense in fissures. Mesonotum piceous except lateral castaneous cruciform elevation and stridulatory apparatus, tawny spot on medial portion of stridulatory apparatus in holotype, apparatus completely castaneous in paratype. Stridulatory apparatus with nine ribs. Long golden pile laterally, in wing groove, and within depressions of cruciform elevation. White pruinosity laterally in wing groove. Metanotum piceous becoming castaneous centrally with tawny lateral margin and posterior covered with white pruinosity. Ventral thoracic plates dark castaneous except tawny margins and tawny katepisternum 2. Venter covered with long white pile and white pruinosity.

Forewing and hind wings.—Hyaline. Venation castaneous becoming piceous distally except tawny costal margin along radial cell, medial vein to node, and central region of cubitus posterior + anal vein 1. Basal cell and proximal clavus clouded with castaneous. Basal membrane grayish. Hind wing venation tawny except castaneous subcostal + radius vein and ambient vein. Vanal fold, anal cell 3, anal cell 2 along anal veins 2 and 3, anal cell 1 along anal vein 2, and proximal cubital cell 2 along cubitus posterior grayish. Proximal cubital cells 1 and 2 clouded with castaneous.

Legs.—Castaneous with tawny extremities, coxae marked with tawny, femora striped with tawny. Fore femur with rounded primary spine against femur and larger, upright secondary spine. Fore tibiae castaneous, middle tibiae with proximal tawny annulus, hind tibiae tawny except for castaneous proximal spot and distal third, tibial spurs and comb castaneous. Tarsi castaneous, pretarsal claw castaneous, lighter at base.

Operculum.—Male operculum tawny with castaneous base and anteromedial region, not reaching anterior margin of sternite II, extending medially to level of medial meracathus. Lateral and posterior margins straight at approximate right angle to one another, rounded medial and lateral angles, medial margin straight to base. Meracanthus tawny with castaneous base. Operculum covered with short white pile, more dense at base, white pruinosity on base, more dense laterally.

Abdomen.—Tergites piceous, with posterior, transverse castaneous stripe and tawny posterior margin. Lateral tergite 1 castaneous, tawny mark on anterior and above timbal. Tergite 2 with tawny mark along timbal cavity. Tergites covered with short golden pile, more dense laterally, tergites 1 and 2 with white pruinosity medial to timbal. Sternites piceous, posterior margin of sternites I and III–VI tawny covered with long pile, more dense anteriorly. Sternite VII castaneous with lighter posterior margin, posterior margin smoothly curved. Sternite VIII castaneous with long golden pile. Timbal with 12 long and 11 short ribs.

Genitalia.—Pygofer piceous at base with castaneous lateral surfaces, pygofer upper lobe folded medially against pygofer. Median uncus lobe piceous at base, castaneous at terminus, arched in cross-section, tapering to rounded terminus at about half its length, sinuate lateral margin. Anal styles piceous with tawny edges, extending beyond dorsal beak. Aedeagus castaneous and tawny with two curving spines at base, the left side with five cornuti, long recurved endotheca tawny.

Female unknown.

Measurements (mm).— N = 2 males, mean (range). Length of body: male 17.95 (17.9–18.0); length of forewing: male 20.9; width of forewing: male 7.0; length of head: male 2.3 (2.2–2.4); width of head including eyes: male 6.3 (6.2–6.4); width of pronotum including suprahumeral plates: male 6.85 (6.7–7.0); width of mesonotum: male 5.7.

Notes. — Torresia lariojaensis sp. n. is from the Monte floristic province ( Sanborn et al. 2011a).

Figures

FIGURE 12. Torresia lariojaensis Sanborn & Heath sp. n. (A) Holotype male habitus. (B) Holotype male dorsum. (C) Holotype male stridulatory apparatus. (D) Holotype male timbal. (E) Holotype male operculum. (F) Paratype male lateral view of genitalia. (G) Paratype male posterior view of genitalia. Scale for A = 2 cm, B = 2 mm, C = 1 mm, D–E = 2 mm, and F–G = 1 mm.