Solenoptera rugosa Lingafelter

Lingafelter, Steven W., 2015, The Prioninae (Coleoptera: Cerambycidae) of Hispaniola, with Diagnoses, Descriptions of New Species, Distribution Records, and a Key for Identification, The Coleopterists Bulletin 69 (3), pp. 353-388 : 372-373

26. Solenoptera rugosa Lingafelter , new species ( Figs. 4h , 6d–f , 16b )

Discussion. This species is known from only one specimen collected near Constanza in the central mountains of the Dominican Republic in August. This species is very similar to S. furfurosa in overall shape and punctation. However, it differs by having the prosternal process with less divergent lobes at the apex (strongly divergent and widened at apex in S. furfurosa ) and mostly orange femora contrasting sharply with very dark tibiae and tarsi (tibiae only gradually darker than femora in S. furfurosa ).

The shape, coloration, antennae, venter, and punctation are also very similar to S. helbi . The two species are most easily distinguished by differences in the pronotal shape, elytral punctation, and elytral proportions: S. rugosa has the pronotal margins unevenly dentate with a distinct posterolateral spine ( S. helbi has the pronotal margins evenly dentate and lacking posterolateral spine); S. rugosa has an incomplete epipleural margin on the elytra that is rugose ventrally ( S. helbi has a nearly complete epipleural margin on the elytra, extending laterally in dorsal view and mostly smooth ventrally); the elytral base is deeply, rugosely punctate in S. rugosa (the punctures are large and deep but not rugose in S. helbi ), and the elytra are distinctly tapering to divergent apices in S. rugosa (more parallel-sided and not apically divergent in S. helbi ).

Description, Female (Holotype). Size 29.0 mm long; 10.5 mm wide between elytral humeri; integument with head, antennae, pronotum, elytra, tibiae, tarsi, and femoral bases and apices very dark reddish brown, nearly black; middle of femora orange; venter very dark reddish brown. Body not greatly thickened in lateral view. Head with broad, deep, V-shaped sulcus extending from frons, widest at antennal tubercles, and narrowing to vertex. Margins of sulcus sparsely but deeply punctate. Apical maxillary palpomere not strongly dilated at apex. Antennae extending to midpoint of elytra; glabrous; sparsely, shallowly punctate. Antennomeres, except for 3 and 11, strongly broadened apically, triangular, nearly as broad as long. Antennomere 3 elongate and expanded apically, but much longer than broad, about 1.5 times length of scape. Antennomere 11 1.25 times length of 10, oval with subapical constriction. Antennomeres 4–10 successively decreasing slightly in length. Poriferous sensory areas as follows: very small, oval dorsal apicolateral patches on antennomeres 3–5; 1 very small and 1 larger, oval dorsal apicolateral patches on 6–7; small ovoid patches increasing in number and distribution over dorsomesal and dorsolateral surface on 8–9; dorsal surface nearly covered in oval and sensory areas on 10–11.

Pronotum 10.0 mm wide; 4.8 mm long (2.1 times wider than long); with deep, mostly impunctate median sulcus with Y-shaped branches toward anterior margin and broadly to near posteromedial margin. Pronotal margin with rounded anterolateral lobe and large posterolateral recurved spine. Uneven dentation along entire margin but absent from rounded posterior margin of posterolateral spine. Margin with faint, oblique, shiny, sparsely punctate ridge extending from posterolateral angle to median ridge. Surface glabrous except for a few inconspicuous setae along margins. Abruptly constricted posterior to posterolateral angle such that base of pronotum extends medial to midpoint between scutellar margin and humeral margin. Prosternal process broad, broader at apex than base, moderately punctate, strongly notched at apex with apices weakly divergent. Base of prosternum continuous with apex, without any ventral elevation or distinct tubercle.

Elytra 21.0 mm long; 5.3 mm wide (4 times longer than wide); glabrous; distinctly tapering at apex and diverging at suture. Punctures dense and deep basally, interconnected and rugose, becoming smaller and denser but not rugose on apical 3/4. Epipleural margin incomplete in dorsal view and humeral epipleural margin absent. Epipleuron in ventral view rugose for entire length. Elytral apex rounded to very weakly dentiform suture; very weakly crenulate. Scutellum broad, subreniform, moderately, shallowly punctate; mostly glabrous. Legs short, hind femur extending to apical fourth of elytra. Femora very weakly thickened postmedially, not distinctly punctate, mostly glabrous; without denticles. Tibiae with fringe of short pubescence along inner margin of apical halves, most pronounced on metatibiae, least pronounced on protibiae. Thoracic pleura and sternites sparsely pubescent and punctate. Metasternum with shallow, V-shaped impression. Abdomen with venter sparsely pubescent. Last ventrite 1.3 longer than fourth, truncate at apex.

Etymology. The epithet rugosa is a latin adjective meaning wrinkled and refers to the wrinkled punctation at the base of the elytron and along the ventral margin of the epipleuron.

Type Data. Holotype (female): DOMINICAN REPUBLIC: La Vega Province (3–4 km S Constanza , along side of road, August 1991, F. del Monte, collector [ USNM]).

Figures

Fig. 4. Dorsal habitus of Hispaniolan Solenoptera species. a) S. furfurosa, male, b) S. furfurosa, female holotype, c) S. scutellata, male, d) S. scutellata, female, e) S. vittata, male, f) S. vittata, female, g) S. helbi, female holotype, h) S. rugosa, female holotype, i) S. tomentosa, male paratype.

Fig. 6. Solenoptera species, female holotypes. S. helbi: a) Dorsal view, b) Ventral view, c) Lateral view. S. rugosa:

Fig. 16. Distribution maps of Hispaniolan Prioninae. a) Elateropsis sericeiventris, Elateropsis trimarginatus, Elateropsis dichroma, and Elateropsis woodleyi, b) Solenoptera dominicensis, Solenoptera scutellata, and Solenoptera rugosa.