Torresia sanjuanensis 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 : 42-44

Torresia sanjuanensis Sanborn & Heath , sp. n.

( Figure 13 )

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

Type material.— ARGENTINA. HOLOTYPE: male ( INHS), “ San Juan / 25 km S. of Astica / 8 Jan. 1987 / Al Sanborn Coll. ” . PARATYPES: one male ( MSHC) same data as holotype ; one male ( MSHC) “ San Juan / 25 km S. of Astica / 8 Jan. 1987 / F. Noriega Coll. ”; one male ( MSHC) “ San Juan / 25 km S. of Astica / 8 Jan. 1987 / F. Noriega Coll. / EX: Larrea ” ; one male ( MSHC) “ San Juan / 25 km S. of Astica / 8 Jan. 1987 / J.E. Heath Coll. ” ; one male ( MSHC) “ San Juan / 25 km S. of Astica / 8 Jan. 1987 / J.E. & M.S. Heath 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. lariojaensis sp. n. but is smaller (body length 16.3 mm vs. 17.95 mm), is marked only with tawny, there is a tawny spot on the supra-antennal plate and vertex, large dorsal mesothoracic marking, a stridulatory apparatus with 10 ribs, a curved posterior opercular margin, timbal with 13 long and 10 short ribs, and the left spine of the aedeagus with two cornuti.

Description

Coloration.—Ground color of piceous marked with tawny.

Head.—Slightly wider (about 1.05X) than mesonotum, piceous with tawny spot on posterior supra-antennal plate expanding onto anterior vertex, with golden pile, more dense in the pronounced sutures and longer posterior to eye. Ocelli rosaceous, eyes tawny castaneous. Postclypeus piceous with small castaneous spot on dorsal apex, sulcate anteriorly, central sulcus extends entire length, 10 transverse grooves, golden pile laterally and within central sulcus, white pubescence laterally. Anteclypeus piceous with long golden pile. Rostrum piceous except castaneous tawny labrum, reaching to middle trochanter. Gena piceous with tawny mark surrounding antenna and short golden pile. Lorum piceous with tawny lateral margin and tawny spot at anteromedial margin. Antennae dark castaneous except tawny castaneous scape and proximal pedicel.

Thorax.—Pronotum tawny, large medial black mark expanding laterally anteriorly and posteriorly anterior to ambient fissure before extending throughout the ambient fissure surrounding the discs. Dark castaneous marking in lateral fissure and posterior paramedian fissure, on disc connecting the anterior mark of the paramedian fissure with the posterior mark in the lateral fissure and on disc between lateral and ambient fissures. Pronotal collar tawny with castaneous medial spot on anterior margin with ambient fissure, and castaneous spots on lateral collar anterior to lateral angle of collar reaching anterior but not lateral margin. Short golden pile, more dense in fissures. Mesonotum piceous except tawny comma-shaped mark on either side of midline between posterior parapsidal suture and anterior terminus of anterior arm of cruciform elevation not including scutal depression, medial portion, posterior half of anterior arms, posterior arms and posterior half of lateral depressions of cruciform elevation, and stridulatory apparatus, tawny area reduced in some paratypes. Stridulatory apparatus with 10 ribs. Long golden pile laterally, in wing groove, and within depressions of cruciform elevation. Wing groove tawny, castaneous spots on anterolateral margin, centrally along wing groove, and lateral to cruciform elevation, covered with silvery pile. Metanotum castaneous with tawny lateral margin, covered with white pruinosity centrally. Ventral thoracic plates dark castaneous except tawny margins and and tawny katepisternum 2. Venter covered with long white pile and white pruinosity.

Forewing and hind wings.—Hyaline. Venation fuscous except tawny costal margin and medial vein to node, and central region of cubitus posterior + anal vein 1. Basal cell and proximal clavus clouded with tawny. Basal membrane grayish. Hind wing venation tawny except fuscous anal vein 3 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 tawny.

Legs.—Castaneous with tawny extremities, coxae marked with tawny, femora striped with tawny. Fore femur with rounded primary spine against femur and larger, upright darker secondary spine. Fore tibiae castaneous, middle tibiae with proximal half tawny, hind tibiae tawny striped with castaneous, tibial spurs and comb castaneous. Tarsi castaneous, middle and hind tarsi lighter at base. Pretarsal claw castaneous, lighter at base.

Operculum.—Male operculum tawny with castaneous base and anteromedial region, extending to middle of sternite II, extending medially to middle of meracathus. Lateral margin straight, slightly curved posterior margin, 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, short white pile in center of meracanthus.

Abdomen.—Tergites 1 and 2 piceous, tergites 3–8 dark castaneous, with posterior, transverse tawny posterior margin. Lateral tergite 1 with tawny mark on anterior and above timbal and tawny spots on posterior midline and posterior lateral margin with timbal cavity. Tergite 2 with tawny mark along timbal cavity. Tergites covered with short golden and silvery pile, more dense laterally, and white pruinosity tergites 1 and 2 meidal to timbal. Sternites I and II castaneous, sternite I with posterior and sternite II with anterior transverse tawny mark along midline. Sternites III–VII castaneous with tawny posterior margin, lighter on lateral margin with epipleurites, epipleurites castaneous with lighter medial margin and tawny posterior margin. Sternites covered with golden and silvery pile, longer silvery pile very dense on midline of sternites I and II. Male sternite VIII castaneous with lighter dorsal margin for proximal half, posterior margin pointed with long golden pile. Timbal with 13 long and 10 short ribs.

Male genitalia.—Pygofer castaneous, darker bordering tawny posterior, pygofer upper lobe flattened against pygofer. Median uncus lobe castaneous, tawny castaneous along midline, slightly arched in cross-section, tapering to rounded terminus at about half its length, lateral margin sinuate. Anal styles castaneous with tawny edges, extending to length of dorsal beak. Aedeagus castaneous and tawny with two curving spines, left spine with two cornuti, long curled tawny endotheca.

Female unknown.

Measurements (mm).— N = 6 males, mean (range). Length of body: male 16.3 (15.6–16.9); length of forewing: male 19.7 (18.2–20.4); width of forewing: male 6.9 (6.6–7.2); length of head: male 2.23 (2.2–2.3); width of head including eyes: male 6.0 (5.8–6.2); width of pronotum including suprahumeral plates: male 6.5 (6.2–6.8); width of mesonotum: male 5.7 (5.1–6.0).

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

Figures

FIGURE 13. Torresia sanjuanensis 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) Holotype male lateral view of genitalia. (G) Holotype 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.