Leurolophus oriformae, Burckhardt & Basset, 2000

Burckhardt, D. & Basset, Y., 2000, The jumping plant-lice (Hemiptera, Psylloidea) associated with Schinus (Anacardiaceae): systematics, biogeography and host plant relationships, Journal of Natural History 34 (1), pp. 57-155 : 128-129

Leurolophus oriformae sp. n.

(®gures 23A±H, 24)

Description. Adult. Coloration. Yellowish, median longitudinal stripe on vertex and pronotum dark brown. Antennae yellow with apices of segments 4, 6 and 8, and entire segments 9 and 10 dark brown to black. Compound eyes reddish to greyish. Meso and metanotum bearing longitudinal dark stripes separated by yellowish or white bands. Thorax laterally and ventrally dark brown to black with lighter areas. Legs ochreous. Forewings dirty yellowish with brown dots and a narrow brown submarginal band, ends of veins along wing margin with dark dots, vein M +Cu 1 over more than half its length conspicuously black (®gure 23A). Hindwings whitish. Abdomen including genitalia yellowish.

Structure. Head, in dorsal view, elongate (®gure 23B), bearing ¯at lobes anteriorly, ¯attened above; in pro®le, cuneate, only weakly inclined from longitudinal body axis. Vertex rectangular, with angular lobes antero-exteriorly, surface rugous, sparsely covered in short setae. Median suture fully developed. Preocular sclerite developed, forming a pointed tubercle. Compound eyes adpressed, post-occipital sclerites large, extended laterally. Antennae 10-segmented, inserted on ventral face in front of compound eyes, bearing each a subapical rhinarium on segments 4, 6, 8 and 9; shorter terminal seta about as long as segment 10 and about half as long as longer seta. Frons narrow, longer than wide (®gure 23C). Clypeus ¯at, heart-shaped. Thoracic dorsum ¯at with meso and metascutellum slightly raised. Pronotum transversely rectangular, mesopraescutum transverse, ribbon-like. Pronotum expanded laterally, propleurites displaced antero-ventrally. Tegulae ¯attened, parypterae much enlarged and plate-like. Legs stout, femora irregularly thickened, profemora with large hump in the middle of the inner face, mesofemora with similar hump but placed apically. Metacoxae with ¯attened tubercular meracanthus and large membranous cylindrical tubercle on the trochanteral cavity (®gure 23H). Metatibia with 6±8 short, sclerotized spurs. Forewings (®gure 23H) without costal break, membrane bearing irregular large tubercles. Genitalia as in ®gure 23D ±G. Male proctiger irregularly 2-segmented. Male parameres lamellar, with a group of thick spines on the inner face in apical half. Distal portion of aedeagus straight with weakly expanded apex; sclerotized end tube of ductus ejaculatorius short. Female genitalia, in pro®le cuneate, dorsal margin of proctiger shallowly concave. Valvulae dorsalis elongately cuneate, weakly curved. Valvulae ventralis without ventral teeth.

Measurements in mm (1, l 1 m). HW 0.43±0.48; AL 0.39±0.40; WL 1.15±1.40; MP 0.22; PL 0.16; AA 0.15; FP 0.44; AL/HW 0.83±0.91; WL/HW 2.67±2.92; WL/WW 2.25±2.33; TL/HW 0.56±0.63; MP/HW 0.51; FP/HW 0.92; FP/SL 1.26; FP/CL 2.44.

Fifth instar larva (®gure 24). Brown, membranes yellowish orange. Body elongate. Antennae 8-segmented with one rhinarium on each of segments 3 and 5, and two on segment 7. Head, wing buds and caudal plate sparsely setose dorsally. Thoracic tergites small. Forewing buds moderately large, without humeral lobes, margins bearing normal setae which are slightly larger than those on the dorsal surface. Legs relatively large and slender with fused tibiotarsus, claws absent. Caudal plate angular, truncate apically, bearing a few marginal lanceolate setae. Anus terminal, circumanal ring consisting of several pore rows.

Host plants, gall and biology. L ithrea molleoides . The larvae develop on the leaves, together with those of Calophya clavuligera . Contrary to the latter, they do not appear to induce any deformations.

D istribution . Argentina (Misiones), Brazil (SaÄo Paulo) and Uruguay (Lavallejo).

Material examined. HOLOTYPE, l Argentina: Misiones Province , Rt. 14, 3 km E Centinela, 29.xi.1995, L ithrea molleoides (H. A. Cordo) , dry mounted ( NHMB).

PARATYPES. Argentina: 24, l 26 m, ca 40 larvae, same data as holotype. Brazil: 2, l 3 m, SaÄo Paulo, Gramadinko, 16.ii.1989, L ithrea ? molleoides (F. D. Bennet, D. H. Habeck and L. Crestana). Uruguay: Lavalleja, Cerro de Arequita, 4.x.1995 (A. Baz). Dry mounted and preserved in alcohol (BMNH, MHNG, NHMB, SABC, USNM).