Eurysthea parva, Martins, Ubirajara R. & Galileo, Maria Helena M., 2013

Martins, Ubirajara R. & Galileo, Maria Helena M., 2013, New species and records of Cerambycinae and Lamiinae (Coleoptera: Cerambycidae) from the Neotropical Region, Zootaxa 3683 (5), pp. 571-580 : 575-576

Eurysthea parva sp. nov.

( Fig. 6 )

Integument reddish-brown, appendages lighter, elytra black. Frons with golden-yellow pubescence, not obscuring surface. Vertex with golden-yellow pubescence, denser behind the eyes. Upper ocular lobes with four rows of ommatidia separated from one another by five times the width of a lobe. Genae with sparse white hairs. Antennae reaching the elytral apices approximately at the apex of antennomere VIII. Scape with irregular surface and sparse, white hairs. Antennomere III with long apical spine paralleling the segment, nearly 2/3 the length of antennomere IV. Antennomere IV with apical spine as long as 1/4 the length of antennomere V. Antennomere V and the following ones unarmed.

Prothorax without spine or lateral tubercle. Pronotum with two nearly contiguous, rounded tubercles located on anterior third; a less elevated longitudinal tubercle is positioned between and behind the anterior ones; two small low elevations are at the sides of the base; disk smooth and glabrous; punctation moderate on the edges of the tubercles, scattered whitish-yellow pubescence located on the sides and between the pronotal tubercles. Sides of prothorax punctate and moderately pubescent. Prosternum punctate in posterior 2/3.

Elytra shining; each elytron with two yellow markings: one, slightly before the middle, in the shape of an inverted “V,” which reaches both the margin and the suture; the other, situated in the apical fourth, appears as two rounded and fused spots, and extends obliquely downward from the suture to the margin, Elytral punctation evident, distinct at base but decreasing towards apex. Elytra with scattered, long white hairs. Elytral apices transversely truncate with long outer spine.

Thoracic sterna and urosternites with dark reddish, shiny integument, with sparse white hairs, more concentrated laterally; metepisterna covered by white pubescence.

Measurements, in mm, holotype female. Total length, 10.3; prothorax length, 2.0; greatest width of prothorax, 2.0; elytron length, 7.5; humeral width, 2.5.

Etymology. Latin, parvus = small; allusive to the measurements.

Type material. Holotype female, ECUADOR, Loja: Gonzanama (3 km S), 27.II–7.III.2006, F. T. Hovore & I. Swift col. ( CASC).

Discussion. Eurysthea parva sp. nov. and E. cribipennis Bates, 1885 , which also occurs in Ecuador, will both key to couplet 12 in Martins (2005) key to species. E. parva sp. nov. is distinguished by its smaller dimensions (total length, 10.3 mm); by the rounded, unarmed sides of the prothorax; by the general black or reddish-black color; by the upper ocular lobes with four rows of ommatidia; and by the spine of antennomere III as long as 2/3 the length of antennomere IV. In E. cribripennis , the dimensions are larger (length, 19.6-20.1 mm); the sides of the prothorax are spined; the general color is reddish-brown; the upper ocular lobes have six rows of ommatidia, and the spine of antennomere III is 1/3 longer than that in IV.

Figures

FIGURES 1 – 6. 1. Hexoplon rubriceps sp. nov., holotype female, length 15.5 mm; 2. Gnomidolon pulchrum Martins, 1960, female (ACMS), lengh 11.9 mm; 3. Cycnidolon praecipuum sp. nov., holotype female, length 6.9 mm; 4. Pteroplatus caudatus sp. nov., holotype male, length 11.8 mm; 5. Pteroplatus pallidicolor sp. nov., holotype male, length 13.0 mm; 6. Eurysthea parva sp. nov., holotype female, length 10.3 mm.