Solenoptera tomentosa Lingafelter, 2015

Devesa, Sergio, Fonseca, Elier & Barro, Alejandro, 2017, Description of the female of Solenoptera tomentosa Lingafelter, 2015 (Coleoptera: Cerambycidae: Prioninae: Solenopterini), Insecta Mundi 2017 (588), pp. 1-7 : 2-3

Solenoptera tomentosa Lingafelter, 2015 ( Fig. 1–20 )

Description. Female ( Fig. 1–6 , 12, 14, 16 , 18–19 ). Head dark brown; pronotum dark reddish-brown; elytra reddish-brown at base, gradually becoming reddish posteriorly; basal antennomeres dark brown; mandibles blackish at apex; femora, tibiae, tarsi and apical antennomeres reddish-brown; ventral surface dark brown.

Head ( Fig. 18 ). Surface glabrous except some setae around eyes and base of scape and on clypeus; sparsely punctate; central area between antennal tubercles and middle of upper ocular lobes with pronounced, triangular-shaped sulcus, narrowed on vertex and not reaching apex of pronotum ( Fig. 12 ); clypeus strongly punctate; mandibles relatively short and broad, weekly arcuate, with acute apex, cutting edge with small tooth, centrally with a few setae; hypostomal area very coarsely punctaterugose from gula to anterior third, with a few setae ( Fig. 14 ). Antennal tubercles with small setae at base ( Fig. 19 ). Antennae surpassing elytral base by about 3 antennomeres; antennomeres glabrous, flattened ventrally; scape reaching or extending to just beyond posterior edge of eye, thick, coarsely and moderately punctate; antennomeres IV–IX triangular, constricted at base; segments III–X decreasing in length; poriferous sensory areas as follows: antennomere III with very small dorsal apicolateral rounded patch; one row of three very small apicolateral patches on IV; one row of three apicolateral patches and one apicodorsal patch on V; two rows of three-four apicolateral and apicodorsal patches and many small ones basidorsally on VI–IX; many different sized patches on most dorsal and lateral surfaces of X–XI, larger ones along margins ( Fig. 19 ). Antennal formula (ratio) based on length of antennomere III: scape = 1.17; pedicel = 0.23; IV = 0.73; V = 0.67; VI = 0.61; VII = 0.59; VIII = 0.56; IX = 0.53; X = 0.44; XI = 0.61.

Thorax ( Fig. 12, 14 , 18 ). Prothorax transverse, almost rectangular, 1.72 times wider than long; sides with acute spine on anterolateral and posterolateral margins, both pointed backward; lateral margins strongly crenulate; posterolateral angle abruptly narrowed; pronotum shiny, weekly punctate on disc, with deep Y-shaped depression anteriorly; lateral areas shiny, rugose-punctate, with a variable irregular golden pubescence on both side of median sulcus, and dense fringe of golden pubescence on anterior margin ( Fig. 12 ). Prosternum shiny, transversely strongly convex, longitudinally rugose in center; prosternal process notched at apex, lobes not divergent, base lacking protuberance; with fringe of golden pubescence around procoxae. Pronotum and prosternum without sexual micropunctation. Mesosternum and metepisternum with dense golden pubescence. Metasternum with dense golden pubescence except centrally ( Fig. 14 ). Scutellum triangular, with golden pubescence obscuring integument.

Elytra ( Fig. 16 ). Sides nearly parallel, slightly tapering at apical third and not divergent apically at suture; 1.90 times longer than humeral width; nearly glabrous, with very small, suberect setae in each puncture (only visible at high magnification); semirugose basally, densely punctate throughout, punctures gradually smaller toward apex; elytral apex rounded with a few, slightly distinct crenulae, and weakly dentiform apicolaterally and at suture.

Legs. Short; coxae with golden pubescent patches (more evident on pro- and mesocoxae); femora gradually clavate, without pubescence, finely punctate and without denticles on profemora; hind femur extending to apical fifth of elytra; tibiae with dense golden-orange pubescence on inner margins of api- cal half and without denticles.

Abdomen. Ventrites with wide, dense golden pubescent bands laterally, glabrous centrally, where they are moderately, weakly punctate; last ventrite 1.25 times longer than fourth, rounded, almost flat, without broad emargination at distal margin ( Fig. 2–4 ).

Dimensions, females (in mm). Total length, 29.6/25.3. Pronotum: length, 6.5/5.4; anterior width, 9.7/8.6; posterior width, 10.5/9.8. Elytral length, 20.1/17.2. Humeral width, 10.6/9.3.

Specimens examined. DOMINICAN REPUBLIC, Provincia de Pedernales: Oviedo (17°49′10.3″N / 71°26′15.1″W), 1 male and 2 females, Nov-2003, J.A. Genaro leg. (MNHNCu) ; Fondo Paradí, Parque Nacional Jaragua (17°45′15″N / 71°24′01″W), 1 male, Feb-2002, J.A. Genaro, E. Gutierrez & G. Alayon col. (MNHNCu) .

Remarks. Sexual dimorphism: The morphological differences between the sexes are largely confined to the thoracic segments. The most noticeable difference lies in the appearance and structure of the pronotum and prosternum. The sides of the pronotal disc in male have a matte, densely micropunctate surface, only interrupted by a narrow, oblique, shiny, sparsely punctate ridge ( Fig. 13 ), while in females they are uniformly shiny and moderately punctate ( Fig. 12 ). Antennomeres VI–X in males have long yellow setae ( Fig. 20 ), while in females they lack setae ( Fig. 19 ). The male anterolateral margins of the pronotum are mostly rounded and without distinct spines on the margin ( Fig. 13 ); conversely, the female anterolateral and posterolateral pronotal margins have an acute spine, directed backwards, and the lateral margins are strongly crenulate ( Fig. 12 ). The prosternum in males is densely micropunctate, except for a nearly smooth central area close to the head and on the prosternal process ( Fig. 15 ); the female prosternum is shiny and only rugose around the upper part of the prosternal process ( Fig. 14 ). The elytra in males have moderately dense, fine, suberect setae throughout ( Fig. 17 ), while the female elytral surface is almost glabrous ( Fig. 16 ).

The abdominal ventrites are transversely more convex in females than in males; pubescence is restricted to the sides of the ventrites ( Fig. 2–5 and 8–11 ), and the posterior margin of ventrite V is truncate in females, but deeply emarginate in males. Finally, unlike in most other Prioninae , there is very little difference in the shape and length of the female and male antennae.

The dimensions (in mm) of the two males studied are: Total length: 26.9/29.1. Pronotum: length, 6.0/6.2; anterior width, 8.8/9,0; posterior width, 8,8/9.7. Elytral length, 17.1/19.0. Humeral width, 9.3/10.1.

Figures

Figures 1–6. Solenoptera tomentosa Lingafelter, 2015, female. 1, 4) Habitus, dorsal view. 2, 5) Habitus, ventral view. 3, 6) Habitus, lateral view.

Figures 7–11. Solenoptera tomentosa Lingafelter, 2015, male. 7, 10) Habitus, dorsal view. 8, 11) Habitus, ventral view. 9) Habitus, lateral view.

Figures 12–17. Solenoptera tomentosa Lingafelter, 2015. 12-13) Head and prothorax, dorsal view, respectively female and male.14–15) Head and prothorax, ventral view, respectively female and male.16–17) Elytra, respectively female and male.

Figures 18–20. Solenoptera tomentosa Lingafelter, 2015.18) Head, scape and prothorax, female.19) Antennomeres VII–XI, female. 20) Antennomeres VII–XI, male.