Oxylymma soniae Wappes and Santos-Silva, 2019

Wappes, James E. & Santos-Silva, Antonio, 2019, Descriptions of one new genus and seven new species of Rhinotragini (Coleoptera: Cerambycidae: Cerambycinae), Insecta Mundi 695, pp. 1-19 : 2-4

Oxylymma soniae Wappes and Santos-Silva , new species

( Fig. 1–4 )

Description of female holotype. Frons, vertex and superior area behind eyes black; clypeus, genae, labrum and remaining areas of head orange; mandibles orange with black apex; scape brownish in parts of dorsal and outer areas, orange in remaining areas; pedicel brownish with distal area orange; antennomeres III–VI mostly brownish, with some areas more orangish; antennomere VII brownish in basal half, especially dorsally, yellowish in remaining areas; antennomeres VIII–X yellowish; antennomere XI yellowish except apex dark brown; prothorax orange, with some areas slightly more yellowish (depending on light intensity), except narrow dark brown anterior margin of pronotum; ventral surface of mesothorax orangish (more yellowish depending on light intensity); ventral surface of metathorax black except orangish distal area of metanepisternum and narrow orangish area at sides of metacoxal cavities; scutellum mostly pale yellowish-white; elytra pale yellowish-white, gradually and slightly more so toward apex, except short longitudinal band along suture close to scutellum and two narrow black longitudinal bands extending slightly past basal half, fused basally, innerband slightly longer and gradually widened toward its apex; pro- and mesocoxae yellowish, with irregular areas more orangish; metacoxae pale yellow toward inner side, brown toward outer side; femoral peduncles pale yellow; femoral club orangish (yellower depending on light intensity); tibiae and tarsi mostly reddish-brown; abdominal ventrites pale yellow, marbled with orangish areas.

Head. Anterior area of head lacking distinct rostrum. Frons microsculptured, very finely striate in some areas, with coarse, sparse punctures interspersed, coarser and denser laterally; central area slightly more elevated, sides near clypeus slightly depressed; with short and long, sparse yellowish setae laterally, glabrous centrally. Antennal tubercles nearly contiguous, dorsally flattened; finely, shallowly sparsely punctate; glabrous. Vertex coarsely, sparsely punctate between antennal tubercles and area of posterior constriction of head, except smooth central area, with short or long yellowish setae emerging from nearly all punctures; area of anterior constriction coarsely, moderately abundantly punctate, nearly glabrous. Area behind upper eye lobes smooth close to eye, sparsely punctate toward prothorax; glabrous close to eye, with a few short yellowish setae toward prothorax. Area behind lower eye lobes striate-punctate (punctures shallow and indistinct); with a few yellowish setae toward ventral side. Genae 0.7 times length of lower eye lobe, glabrous, finely, sparsely punctate except smooth distal area. Median groove distinct from clypeus to area between antennal tubercles. Postclypeus and labrum with sparse, long, erect yellowish setae. Gulamentum convex, smooth, glabrous from constriction of head to prothorax, flattened, finely, sparsely punctate, with moderately sparse, long, erect yellowish setae from constriction of head to elevated anterior margin. Inner margin of upper eye lobes wide, rounded; distance between upper eye lobes 1.08 times length of scape; in frontal view, distance between lower eye lobes 0.86 times length of scape. Antennae 1.10 times elytral length, slightly surpassing base of posterior third of elytra. Scape finely, sparsely punctate, slightly, gradually widened toward apex, in side view curved at about posterior third; with sparse, long, erect yellowish setae. Pedicel and antennomeres III–IV nearly cylindrical, slightly widened toward rounded and slightly narrowed apex; antennomeres V–X gradually serrate; antennomere XI with apex narrowly rounded; pedicel and antennomeres with sparse, long, erect yellowish setae throughout. Antennal formula (ratio) based on length of antennomere III: scape = 0.83; pedicel = 0.25; IV = 0.61; V = 0.67; VI = 0.50; VII = 0.49; VIII = 0.39; IX = 0.39; X = 0.34; XI = 0.56.

Thorax. Prothorax transverse, with strong basal and distal constriction; posterior margin concave; sides slightly divergent from anterior to posterior constriction. Pronotum coarsely, sparsely punctate centrally, denser laterally, especially in distal half; with sparse, long, erect yellowish-white setae. Sides of prothorax coarsely, sparsely punctate; with sparse, long, erect yellowish-white setae. Prosternum finely transversely striate; with both short and moderately long, sparse erect yellowish-white setae. Prosternal process distinctly narrow centrally, triangularly expanded posteriorly. Ventral surface of mesothorax with yellowish-white pubescence distinctly not obscuring integument. Ventral surface of metathorax with whitish pubescence not obscuring integument, denser on metanepisternum and sides of metaventrite. Scutellum with a few short yellowish-white setae.

Elytra. Parallel-sided at anterior half, slightly widened from midlength to about posterior fifth, roundly narrowed at posterior fifth; posterior quarter of sutural margins divergent; apex truncate, slightly oblique; coarsely, moderately abundantly punctate in basal half, slightly finer, sparser in posterior half; with moderately sparse long, erect yellowish-white setae. Legs. Femora pedunculate-clavate; with sparse, long, erect yellowish-white setae. Tibiae with long, erect yellowish setae, gradually yellowish-brown toward apex, distinctly more abundant on protibiae.

Abdomen. Ventrites moderately coarsely, sparsely punctate, with long, erect yellowish-white setae emerging from some punctures; apex of ventrite V truncate.

Dimensions (mm). Total length 7.85; prothoracic length 1.15; anterior prothoracic width 1.05; posterior prothoracic width 1.40; humeral width 2.00; elytral length 5.10.

Type material. Holotype female from BOLIVIA, Santa Cruz: 4-6 km SSE Buena Vista (Flora & Fauna Hotel), 5-8.V.2004, Wappes and Cline col. ( FSCA, formerly ACMT).

Remarks. Oxylymma soniae sp. nov. is similar to O. birai sp. nov., but differs as follows: anterior area of head not forming a distinct rostrum; upper eye lobes widely rounded at apex; prothorax transverse; elytra with two longitudinal dark bands. In O. birai ( Fig. 6–9 ) the head forms a distinct rostrum, upper eye lobes have acute apex, prothorax is slightly longer than wide, and elytra bear a single short longitudinal dark band laterally. It differs from O. caeruleocincta Bates, 1885 , which also lacks a distinct rostrum, by each elytron with two dark longitudinal bands (with two wide transverse dark bands in O. caeruleocincta ). Oxylymma soniae differs from O. telephorina Bates, 1870 , which also does not have a distinct rostrum, by the elytra with two longitudinal dark bands (only one dark longitudinal band in O. telephorina ), and lack of a circular dark spot or transverse dark macula posteriorly (present in O. telephorina ). Finally, it differs from O. gibbicollis Bates, 1873 ( Fig. 5 ) by the short rostrum (long in O. gibbicollis ), pronotum without dark maculae (present in O. gibbicollis ) and not noticeably rounded laterally or strongly gibbous centrally (distinctly rounded and gibbous in O. gibbicollis ), and elytra with two longitudinal dark bands, one laterally and another in center of dorsal surface (without central dark band, and with distinct longitudinal dark band along suture in O. gibbicollis , not mentioned in original description).

Etymology. Oxylymma soniae is named for Sonia Zamalloa, Hotel Flora and Fauna near Buena Vista, Bolivia, to thank her for the welcoming hospitality she always provided to the first author and fellow collectors on our many trips to the hotel property during the faunal survey of Bolivian Cerambycidae .

Figures

Figures 1–9. 1–4) Oxylymma soniae new species, holotype female: 1) Dorsal habitus. 2) Ventral habitus. 3) Lateral habitus. 4) Head, frontal view. 5) Oxylymma gibbicollis new species, holotype, dorsal habitus. 6–9) Oxylymma birai new species, holotype, female: 6) Dorsal habitus. 7) Head, frontal view. 8) Ventral habitus. 9) Lateral habitus.