Archepsila cordicollis, Hołyński, 2001

Hołyński, Roman B., 2001, Two new genera of the subtribe Psilopterina Lac. (Coleopteraz Buprestidae) Abstract: The paper gives the description of two new genera of the subtribe Psilopterina LAC. from the Indo-Pacific Region., Annals of the Upper Silesian Museum (Entomology) 10 - 11, pp. 129-133 : 130-132

Archepsila cordicollis sp.n.

MATERIAL examined

Holotype: “ Bacan Is. , Indonesia, 1-1991 ” [male RBH: BPgrb)]

Holotype ( fig. 1 )

Male, 17.5x 5.5 mm. Body dorsally and ventrally of rather uniform bronzed colouration with slight cupreous tinge.

Epistome short, deeply arcuately emarginate at apex, coarsely and densely punctured. Front trapezoidal, not separated from epistome, broadly and rather deeply transversely depressed in anterior half; supraantennal carinae very prominent anteriorly, disappearing behind midlength of front among coarse longitudinal punctate-rugose sculpture; frontal pubescence rather short and inconspicuous, almost uniformly distributed, whitish. Vertex wide (V:H=0.45); eyes prominent, not quite twice longer than wide. 1. antennal joint egg-shaped, ca. 1.5x longer than wide; 2. globular, shorter than wide, distinctly narrower than 1.; rest of antennae missing.

Pronotum wide (L:BW:MW:AW=1:1.5: 1.6:1.2); base bisinuate, basal angles acute (ca. 70°); sides deeply sinuate in posterior third, strongly rounded at middle (here attaining maximum width) and somewhat less strongly so in apical third; anterior angles right; anterior margin deeply bisinuate, laterally bordered with shallow but distinct, coarsely punctured stria. Disk convex, with broad (ca. 1/3 of pronotal width) and rather deep depression in basal half, and shallow oblique one at midlength of each side; lateral carina virtually absent, notosternal border broadly rounded off and densely covered with coarse and very irregular sculpture (making pronotal sides look coarsely irregularly crenulate in dorsal aspect); pronotum coarsely punctured, punctures irregularly spaced, sparse on both sides of median depression, rather dense otherwise on disk, very dense and confluent near lateral margins (this sculpture extending to ventral side); prescutellar pits deep, elongate, separated by ca. their diameter. Scutellum small, trapezoidal, ca. 1.5x wider than long, convex.

Elytra 2.4x longer than wide; sides slightly divergent behind humeri (no trace of posthumeral denticle), then very shallowly sinuately subparallel to midlength, arcuately convergent to apical fifth, again slightly sinuate, and again somewhat more strongly tapering just before apices; lateroapical denticle obtuse, sutural much more prominent. Epipleural carina coarsely crenulate in humeral part and slightly uneven apically. Striae shallow, rather coarsely and densely punctured (much more so at sides); interstriae flat, their puncturation almost as coarse and dense as that in striae, becoming very coarse and confluent laterally; 3., 5., 7., and 9. interstria with series of elongated, convex, smooth, darker cupreous reliefs.

Anterior margin of prosternum very shallowly, almost inappreciably emarginated; prosternal process parallelsided to behind procoxae, then cuneately narrowed to broadly rounded apex; lateral striae deep, parallel; lateral rims smooth, twice wider median space with sparse and moderately coarse punctures; proepisterna covered with very coarse, dense, punctatefoveolate sculpture not clearly demarcated from that of pronotal sides. Metasternum convex, shallowly grooved, sparsely and rather finely puntured on median parts, densely, coarsely and irregularly on sides; hind margin of metacoxae with obtuse and blunt but very prominent tooth at median third. 1. sternite broadly depressed along median line; median parts of abdomen with coarse, rather sparse, elongate punctures, which laterally become finer but denser, without typically dtp spaces; median parts of sternum and abdomen virtually glabrous, sides covered with long but sparse yellowish pubescence; apex of anal sternite broadly roundedly truncated.

Remarks

P. cordicollis sp.n. is known only from its type-locality, Batjan L, but its occurence there seems highly improbable: the genus shows no affinity to any Old World taxa, being apparently closely related to Andean Ectinogonia SPIN , and Pseudolampetis OBB. , while Moluccas are perhaps the least likely place to look for Neotropical/Oriental disjunctions.

Figures

Fig. 1. Archepsila cordicollis g.n., sp.n.