Lagocheirus jamaicensis Toledo & Hovore, 2005

Toledo, Víctor H. & Hovore, Frank T., 2005, Notes on the genus Lagocheirus Dejean: records and descriptions (Coleoptera: Cerambycidae: Lamiinae: Acanthocinini), Zootaxa 1021 (1), pp. 29-36 : 30-32

Lagocheirus jamaicensis Toledo & Hovore , new species

( Figures 1a, b )

Type material. Holotype: JAMAICA: Green Hills, 13­20­IX­66, A. B. Gurney ( USNM) . Paratypes. One male ( CNIN) and one female ( USNM) , same data as holotype; one female: JAMAICA: Mandeville , Aug 2, 1902, W. Robinson bequest 1929 ( CNIN) .

Diagnosis. This species would key to L. foveolatus Dillon in Toledo (1997), but the coloration and pattern are completely unlike that large Panamanian species, which is wholly dark red­brown with a white post­median elytral fascia. The dorsal coloration of L. jamaicensis most closely resembles that of L. araneiformis (Linnaeus) , L. o. obsoletus (Thomson) [formerly L. undatus (Voet) ], and L. integer Bates , but it may be easily distinguished from these and all other described species in the genus by the long spines at the apex of elytra. The combination of acute lateral pronotal tubercles, with yellow pubescent areas on the pronotum, and long, unarmed, unicolorous antennae also is distinctive.

Description. Male. Length: 20 mm; humeral width: 8.7 mm. Form robust, elongated, slightly subdepressed; integument reddish­brown; pubescence dense, very short, appressed, brown, grayish, yellowish, and white. Head with regularly scattered yellowish pubescence and short yellow setae, an oval black brown macula near the clypeal suture on each side of median line; yellowish pubescence around margins of eyes; antennae with sparse, short, appressed yellowish pubescence, segments 3–11 feebly dark biannulate basally and apically. Pronotum with an apical short vitta onto lateral margin of anterior tubercles, not reaching anterior margin, basal vitta angulated, extending from margin anteriorly onto lateral sides of discal tubercles, median lateral vitta extending from basal margin onto ventral side of lateral tubercles; dense yellow pubescence between basal vitta of discal tubercles and lateral tubercles. Scutellum evenly clothed with yellowish brown pubescence. Elytra with mixed brown, grayish and white pubescence, appearing light brown over most of disk; a postscutelar small macula of white pubescence, near suture; a large, semi­circular dark brown lateral macula at basal 2/3; numerous small dark brown spots scattered onto suture, principally over apical one­half; a pair of dark brown, angulated maculate medially at either side of suture; the apical 1/3 with darker brown pubescence extending across disk in a zig­zag pattern, pro­, meso­ and metasternum mottled with yellowish­brown pubescence. Abdomen irregularly clothed with yellowish pubescence. Legs irregularly clothed with pale yellowish pubescence; tibiae annulate basally with brown pubescence.

FIGURE 2. Lagocheirus araneiformis ; a: L. a. flavolineatus , male, Loreto Road, Ecuador; b: male, Lago Agrio, Ecuador; c:male, Atahualpa, Ecuador; d: male, French Guiana.

Head. Front feebly convex, slightly wider than long; longitudinal median line extending from epistoma to occiput; antennal tubercles very prominent and divergent, with abundant, small setigerous punctures; eyes with lower lobe transverse, wider than long, as tall as genae below; upper eyes lobes broader than interocular space; antennae simple, unmodified, twice as long as body, apical two­thirds of segment five extending beyond elytral apices, scape with dense, scattered punctures, segment three distinctly longer than scape, segment four longer than scape, slightly shorter than three, segments five to eleven gradually decreasing in length, segment eight subequal in length to scape, segments nine to eleven shorter than scape. Pronotum 1.6 times broader than long, base broader than apex; disk with small tubercles, not prominent, apical tubercles subconical, basal tubercles low, lateral tubercles broad, prominent, conical, unarmed at apex; disk with abundant small punctures around tubercles, basal and apical depressions with scattered coarse punctures; basal one­half with abundant setigerous punctures, principally on lateral tubercles. Scutellum subtriangular, apically rounded and regularly punctate. Elytra 1.7 times longer than broad; basal gibbosity scarcely evident, with a single small basal tubercle; humeral angles coarsely granulate; disk densely, coarsely granulate­punctate on basal one­third, punctures bigger than granules, punctures becoming simple, finer, and less dense over apical twothirds; costae feebly elevated at basal one­fifth; apices emarginate, sutural angle strongly dentiform, external angle elongate, spiniform. Prosternal process one­half the width of a coxal cavity; mesosternal process four­fifths the width of a coxal cavity, sparsely, coarsely punctate laterally; metasternum regularly, finely punctate. Abdomen sparsely, finely punctate; visible sternites subequal in length, fifth sternite tapered, emarginate at apex. Legs finely, regularly punctate.

Female. Length: 24.5 mm; humeral width: 10.7 mm. Form slightly more robust than that of male. Antennae shorter, with segment five extending beyond elytral apices; scape and segment three subequal in length, longer than any of the following segments, distal segments gradually decreasing in length. Fifth sternite elongated, tapered, emarginate at apex.

Etymology. This species is named for the type locality.

Figures

FIGURE 1.Lagocheirus jamaicensis; a: male holotype; b: female paratype.