Leptocysta delrioae, Montemayor, Sara I., 2010

Montemayor, Sara I., 2010, Review of the genus Leptocysta Stål with descriptions of two new species (Hemiptera: Heteroptera: Tingidae) from Argentina, Zootaxa 2641, pp. 62-68 : 64-65

Leptocysta delrioae n. sp.

( Figs. 3, 4 , 6 , 12 )

Material examined: Holotype, ɗ, Argentina, Jujuy, Santa Clara, 20-VII-33, P. Denier col., ( MLP); Paratypes, 5Ψ 1ɗ, Argentina, Jujuy, Santa Clara, 20-VII-33, P. Denier col., ( MLP).

Description. General color yellowish brown with obscured areas. Hood anteriorly forming a strongly acute angle, reaching base of antennal segment III, in lateral view moderately convex, separated from median carina by a weak constriction ( Fig. 4 ). Bucculae brown, with three rows of areolae, exterior row larger. Rostrum reaching middle of metasternum, yellowish except for the brown tip.

Pronotum brown, coarsely punctate, hind process testaceous, areolate. Median carinae ( Fig. 4 ) slightly shorter than hood, maximum height with two or three rows of large areolae; posterior extreme embrowned. Lateral carinae divergent, with one row of subquadrangular areolae. Paranota ( Figs. 3 , 6 ) hyaline with an embrowned area, subrectangular, anteriorly projected approximately up to anterior margin of head, anterior and posterior margins with large spines, more numerous anteriorly. Posterior process with areolae much larger than those of pronotal disc. Rostral laminae high; with one row of large areolae; mesosternal rostral laminae subparallel; metasternal laminae opened behind; longer than space between them.

Hemelytra ( Figs. 3 , 12 ) hyaline except for embrowned middle and apical areas; maximum convexity on anterior third; tips divergent; margins basally with very small spines. Costal area at base with three rows of large areolae, at posterior third with a few extra areolae. Subcostal area with three rows of areolae. Discoidal area at widest part with five or six rows of areolae. Hypocostal ridge with two rows of areolae.

Measurements: Females (N= 5) and males (N= 2) respectively. Total body length: 3.52–3.72 (3.61)/ 3.65–3.67; Antennal segments I: 0.21–0.28 (0.23)/ 0.23–0.24; II: 0.08–0.10 (0.09)/0.10*; III: 1.93–1.07 (1.00)/?–1.20; IV: 0.36–0.37 (0.35)/?–43; Hood length: 1.07–1.15 (1.12)/ 1.10–1.12; width: 0.30–0.35 (0.34)/ 0.35–0.35; longer than width: 3.07–3.83 (3.32)/ 3.14–3.21; height: 0.45–0.52 (0.48)/0.50*; Median carina length: 0.87–0.92 (0.90)/0.90–0.92; height: 0.37–0.47 (0.42)/0.40–0.37; Hemelytral length: 2.27–2.40 (2.31)/ 2.30–2.40; width: 1.05–1.15 (1.09)/ 1.02–1.05; Discoidal area length: 1.50–1.60 (1.55)/ 1.52–1.57; width: 0.40–0.45 (0.41)/ 0.40–0.35.

Comments: Leptocysta delrioae shares with L. novatis , L. sexnebulosa and L. tertia large spines on the paranota. However, in L. sexnebulosa and in L. tertia , the spines are distributed all along the paranotal margins, whereas in L. delrioae and L. novatis the spines are only on the anterior and posterior margins and are absent laterally. The paranota of L. delrioae can be distinguished from those of L. novatis by the much longer and inclined posterior margin. The hemelytra of L. delrioae are very similar to those of L. dellapei , in that both species have the maximum convexity of the hemelytral on the outer anterior third, there is no constriction, the inner margin is concave and the subcostal area has three rows of areolae. In L. notialis and L. sexnebulosa , the hemeytra are constricted, the maximum convexity is on the anterior third, the inner margin is slightly convex, and the subcostal area has one or two rows of areolae. Leptocysta novatis has the maximum convexity at the base of the hemelytra, the outer margin is not constricted, the inner margin is straight and the subcostal area has two rows of areolae. Finally in L. tertia the maximum convexity is on the anterior half of the hemelytra, the inner margin is slightly concave, and the subcostal area has two rows of areolae.

Etymology: This species is named after my friend and colleague María Guadalupe del Rio.

Figures

FIGURES 1 – 4. 1 – 2. Leptocysta dellapei n. sp. 1, Habitus; 2, Hood and median carina lateral view. 3 – 4. Leptocysta delrioae n. sp. 3, Habitus; 4, Hood and median carina lateral view. Scale bar: 1 mm.

FIGURES 5 – 10. Paranota. apm— anterior paranotal margin; lpm— lateral paranotal margin; ppm— posterior paranotal margin. 5, Leptocysta dellapei n. sp.; 6, Leptocysta delrioae n. sp.; 7, Leptocysta notialis Drake; 8, Leptocysta novatis Drake; 9, Leptocysta sexnebulosa Stål; 10, Leptocysta tertia Monte. Scale bar: 0.5 mm.

FIGURES 11 – 16. Hemelytra. ct— constriction; him— hemelytral inner margin; hom— hemelytral outer margin; mcmaximum convexity. 11, Leptocysta dellapei n. sp.; 12, Leptocysta delrioae n. sp.; 13, Leptocysta notialis Drake; 14, Leptocysta novatis Drake; 15, Leptocysta sexnebulosa Stål; 16, Leptocysta tertia Monte. Scale bar: 1 mm.