Stizocera ichilo Lingafelter

Lingafelter, Steven W., 2004, New species of Stizocera (Coleoptera: Cerambycidae) from Bolivia, Zootaxa 498, pp. 1-11 : 6-8

Stizocera ichilo Lingafelter , new species

Figs. 4 , 5 a–c

Description. Medium size, 7–12 mm long, 2.0– 2.5 mm wide at humeri; integument color red­orange, except for apical one­fourth or less of elytra which are abruptly black, entirely black legs, antennae, head, and all ventrites except the first. Head with very shallow interantennal tubercle region, tubercles barely raised; very fine punctures around occiput in male, not apparent in female. Head with vestiture of very fine, short, translucent or white hairs around antennal tubercles and vertex. Sparse, scattered long translucent hairs around eye margin, vertex, frons, and frontal­clypeal margin. Antenna with vestiture of short translucent hairs and sparse, long, translucent hairs. Antenna of male and female comparable in length, extending to elytral apices or exceeding them by about one antennomere. Antennomeres 3–5 moderately spined mesally, with spine of third segment longest. Last antennomere about 1.25 times length of penultimate antennomere in both sexes. Third antennomere longest, subsequent antennomeres gradually reduced in length to tenth. Pronotum broad, strongly constricted posteriorly (with constriction extending anteriorly a little at middle of posterior region), less so anteriorly; about as wide as long in male, 0.8 times as wide as long in female. Pronotum covered with scattered, long hairs. Sexual dimorphism present in the punctation and shape of the prothorax. Males have a broader, more evenly rounded pronotum laterally, while females have several lateral indentations giving the pronotum an uneven appearance from above. In males, there are defined patches of punctation extending from sides onto anterior sides of disk, but not at center. In females, there are no (or only a few) punctures present on pronotum and no patches. In both sexes there is weak rugosity of the pronotal disk, especially at the posterior portion, but this is stronger in females than males. Prosternal process not notched and weakly expanded apically; procoxae each remain open posteriorly by 1.5 times width of prosternal process. Elytron covered with scattered long, erect, translucent hairs, and regularly distributed, but less abundant, extremely long hairs of at least twice their length. Punctation moderate in density and depth, gradually becoming shallower and indistinct toward apex. Elytral apex with apicolateral spine strongly produced, but sutural angle dentiform or angulate. Scutellum broadly rounded, covered with inconspicuous, translucent pubescence. Legs stout, of average length, hind femur extending to about apical one­fourth of elytron. Femora clavate; profemoral apices rounded; mesofemoral apices spinose mesally only; metafemoral apices bispinose at mesal and lateral apices. Venter of thorax and abdomen with partial vestiture of short, velvety, white hairs, and scattered longer hairs. Fifth ventrite of male truncate, of female broadly rounded apically.

Discussion. In coloration and rugosity of the pronotum, specimens of S. ichilo are very similar to those of S. rugicollis Guérin­Méneville (1844) ( Figs. 6 a–c, 7b) and S. nigroapicalis Fuchs (1961) ( Fig. 7a ). The pale legs and antennae of S. nigroapicalis distinguish it immediately from S. ichilo . Specimens of S. rugicollis are easily distinguished by their black pronotum (red in S. ichilo ) and elytra having black markings occupying at least apical one­third (black at apical one fourth or less in S. ichilo ).

Etymology. The specific epithet, ichilo , is taken from the name of the Bolivian province where the species was first collected. It is a noun in apposition.

Types. Holotype, female, 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, S. W. Lingafelter, blacklight (NKMC). Paratypes (9): data same as holotype except: 2–14 October 2003, Robin Clarke, L18­34 (2 females, NKMC, JEWC); data same as holotype except: 14–17 November 2003, Morris, Nearns, Wappes (1 male, RFMC); data same as holotype except: 18–25 October 1992, E. Giesbert (2 males, EFGC); data same as holotype except: 1–10 November 2002, S. W. Lingafelter, UV­MV light (1 male, 1 female, USNM); data same as holotype except: 5–15 November, 2001, M. C. Thomas, B. K. Dozier, blacklight trap, tropical transition forest (1 female, FSCA); data same as holotype except: 14–19 October 2000, M. C. Thomas, tropical transition forest (1 male, FSCA).

Figures

FIGURE 4. Stizocera ichilo Lingafelter, new species, female.

FIGURE 5. Stizocera ichilo Lingafelter, new species, holotype. a, dorsal view; b, closeup of head and pronotum; c, lateral view of pronotum and base of elytron.

FIGURE 6. Stizocera rugicollis Guérin­Méneville. a, dorsal view; b, closeup of head and pronotum; c, lateral view of pronotum and base of elytron.

FIGURE 7. a, Stizocera nigroapicalis Fuchs, holotype; b, Stizocera rugicollis Guérin­Méneville, holotype.