Leptocysta dellapei, 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 : 63

Leptocysta dellapei n. sp.

( Figs. 1, 2 , 5 , 11 )

Material examined: Holotype, ɗ, Argentina, San Juan, Villa Aberastain (Dpto. Pocito), 22-I-64, Dr. Torres- Ferreyra col., ( MLP); Paratypes, 5Ψ 4ɗ, Argentina, San Juan, Villa Aberastain (Dpto. Pocito), 22-I-64, Dr. Torres-Ferreyra col., ( MLP).

Diagnosis. Paranota subrounded with small, scattered spines; hemelytra without spines; hemelytral outer margin convex, maximum convexity on anterior half; hemelytral inner margin concave; subcostal area with three or four rows of areolae.

Description. General color yellowish brown with embrowned areas. Hood anteriorly forming an acute angle, reaching base of antennal segment III, in lateral view convex, separated from median carina by a deep constriction ( Fig. 2 ). Bucculae brown, with three or four 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. 2 ) slightly shorter than hood, maximum height with three rows of large areolae; posterior margin embrowned. Lateral carinae divergent, with one row of quadrangular areolae longer than high. Paranota ( Figs. 1 , 5 ) hyaline with an embrowned area, rounded, margins with a few scattered small spines, anteriorly projected approximately up to anterior margin of head. 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. 1 , 11 ) hyaline except embrowned at middle and apical areas; maximum convexity on anterior third; tips divergent; margins without spines. Costal area at base with three rows of areolae, at posterior third with some extra areolae. Subcostal area with three or four rows of areolae. Discoidal area at widest part with five rows of areolae. Hypocostal ridge with two rows of areolae.

Measurements: Females (N= 5) and males (N= 5) respectively. Total body length: 3.52–3.92 (3.74)/ 3.52–4.00 (3.74); Antennal segments I: 0.20–0.21 (0.20)/ 0.21–0.27 (0.23); II: 0.08–0.10 (0.09)/0.08*; III: 1.08–1.17 (1.12)/ 0.94–1.07 (0.98); IV: 0.32–0.37 (0.34)/ 0.28–0.37 (0.32); Hood length: 1.10–1.20 (1.14)/ 1.07–1.60 (1.12); width: 0.30–0.35 (0.32)/ 0.30–0.35 (0.33); longer than width: 3.28–3.75 (3.53)/ 3.21–3.66 (3.40); height: 0.47–0.50 (0.49)/0.50*; Median carina length: 0.85–0.95 (0.88)/0.77–0.87 (0.85); height: 0.35– 0.42 (0.39)/0.37–0.42 (0.39); Hemelytral length: 2.25–2.57 (2.40)/ 2.25–2.55 (2.41); width: 1.07–1.15 (1.11)/ 1.10–1.15 (1.14); Discoidal area length: 1.57–1.65 (1.60)/ 1.62–1.65 (1.63); width: 0.37–0.42 (0.40)/ 0.40– 0.42 (0.42).

Comments: Leptocysta dellapei can be distiguished from other members of the genus by its subrounded paranota, whereas all other species have subrectangular paranota. It also differs in the number of spines on the paranotal margins; in L. dellapei there are only a few small scattered spines, in L. notialis the spines are very short giving the appereance of a serrated margin and in the remainder species the spines are larger and more numerous. Leptocysta dellapei is grouped with L. notialis and L. novatis based in the unarmed hemelytral margins.The hemelytra of L. notialis are medially constricted and those of L. novatis exhibit their maximum convexity at the base, whereas in L. dellapei the hemelytra are not medially constricted and the maximum convexity is on the anterior third of the hemelytra.

Etymology: This species is named after my friend and colleague Pablo Matias Dellapé.

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.