Stizocera delicata Lingafelter

Lingafelter, Steven W., 2004, New species of Stizocera (Coleoptera: Cerambycidae) from Bolivia, Zootaxa 498, pp. 1-11 : 2-5

Stizocera delicata Lingafelter , new species

Figs. 1 , 2 a–c

Description. Medium size, 7–11 mm long; 1.2–1.6 mm wide at humeri; integument color red­orange, except for extreme apex of elytra which fades into black, and entirely black legs and antennae. Head with shallow interantennal tubercle region, tubercles only slightly raised; coarsely, confluently punctate at anterior margin of tubercles and throughout frons, more sparsely punctate on vertex and occiput. Head glabrous except for one long hair on medial margin of upper eye lobe, and a few long hairs along frontal­clypeal margin. Antenna with vestiture of short translucent hairs and sparse, long, translucent hairs, more numerous on basal six segments, restricted to apices of segments 7–9, absent on segments 10–11. Antenna extending beyond apex of elytron by about two antennomeres in male. Antennomeres 3–5 strongly spined mesally, with spine of third segment quite long, nearly one half length of segment four. Last antennomere about 1.25 times length of penultimate antennomere in male. Scape and antennomere four slightly shorter than remaining antennomeres which are all subequal (except for longer segment 11 in male). Pronotum cylindrical, about 1.5 times as long as wide, strongly constricted posteriorly, less so anteriorly. No calli present; nearly glabrous except for a few scattered, long hairs. Pronotal disk with a few indistinct, widely spaced, shallow punctures, more abundant at sides and becoming dense on prothorax venter at posterior two­thirds. Prosternal process notched and expanded apically, procoxae each remain open posteriorly by nearly its width. Elytron glabrous except for scattered long, erect, translucent hairs. Punctation moderate in density and depth, gradually becoming shallower and indistinct toward apex. Elytral apex strongly bispinose, apicolateral spine 2–3 times longer than sutural spine.

Scutellum broadly rounded, covered with dense, velvety white pubescence. Legs relatively long, slender, hind femur extending to about apical one­fifth of elytron. Profemur clavate, apices rounded; meso and metafemur slender, gradually enlarged apically, bispinose at mesal and lateral apices. Venter of meso­ and metathorax with partial vestiture of short, velvety, white hairs (but these are not very noticeable), otherwise glabrous. Abdominal venter glabrous. Fifth ventrite of male broadly rounded apically.

Discussion. Specimens of S. delicata are recognized by their delicate proportions, size, and color. Stizocera longicollis Zajciw (1963) ( Fig. 3 a–c) is most similar, but specimens of this species are recognized by their dense coating of long hairs on the legs, elytra, antennae, and pronotum, their densely punctate pronotal disk with a median callus, and their distinctly clavate meso­ and metafemora. All these characters are lacking in specimens of S. delicata . There is a resemblance between S. delicata and small species of Psyrassa , which is primarily a North and Central American genus. However, the bispinose meso­ and metafemoral apices, which are unspined in Psyrassa , distinguish the two genera.

Etymology. The specific epithet is a Latin adjective referring to the delicate facies.

Types. Holotype, male, BOLIVIA: Santa Cruz Dept., Ichilo Prov., Hotel Flora y Fauna, 4–6 km SSE Buena Vista, 17°29.95’S, 63°33.15’W, 400–500m; 3–14 November 2003, N. E. Woodley, cabin lights (NKMC). Paratypes (3): data same as holotype except: 21–25 November 2003, Morris, Nearns, Wappes (1 male, RFMC); data same as holotype except: 14–19 October 2003, Robin Clarke, L19­127 (1 male, JEWC); data same as holotype except: S. W. Lingafelter, beating (1 male, USNM).

Figures

FIGURE 1. Stizocera delicata Lingafelter, new species, male.

FIGURE 2. Stizocera delicata Lingafelter, new species, holotype. a, dorsal view; b, closeup of head and pronotum; c, lateral view of pronotum and base of elytron.

FIGURE 3. Stizocera longicollis Zajciw. a, dorsal view; b, closeup of head and pronotum; c, lateral view of pronotum and base of elytron.