Oxylymma birai 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 : 4-5

Oxylymma birai Wappes and Santos-Silva , new species

( Fig. 6–9 )

Description of female holotype. Head mostly black; clypeus, labrum and distal area of genae orangish; posterior half of gulamentum yellowish-brown in large central area close to prothorax, dark yellowishbrown laterally, and reddish-brown anteriorly; anterior area of gulamentum narrowly dark reddishbrown; mouthparts mostly orangish, with irregular pale yellow areas; mandibles orangish, except narrow brownish inferior margin of outer side and black apex. Scape ball mostly brownish; scape dark brown ventrally, gradually light brown laterally in basal quarter, somewhat reddish-brown dorsally in anterior quarter, pale yellow in remaining area. Pedicel brown in basal 2/3, gradually reddish-brown toward apex. Antennomere III black in basal 2/3, gradually dark reddish-brown in distal third; antennomere IV dark brown basally, gradually reddish-brown toward apex; antennomere V brown in narrow basal area, gradually light reddish-brown toward apex; antennomeres VI–VII light reddish-brown basally, gradually yellowish-brown toward apex (missing antennomeres VIII–XI). Pronotum mostly orangish, with anterior margin reddish-brown, and transverse, narrow reddish-brown band slightly after middle centrally. Sides of prothorax orangish close to pronotum, gradually pale yellow toward prosternum; prosternum mostly pale yellow, slightly reddish-brown anteriorly. Ventral surface of mesothorax mostly light reddish-brown, except black macula in anterior area of mesanepisternum (also covering narrow area on side of mesoventrite), and pale yellow distal area of mesanepisternum. Metanepisternum black in about basal 3/4, orangish in posterior quarter (orangish area obliquely widened toward elytra). Metaventrite black except orangish narrow area close to metacoxal cavities (more pale yellow distally). Scutellum light reddish-brown. Elytra with longitudinal dark band laterally, from humerus to near midlength, gradually narrowed toward its apex, black basally, gradually brownish toward its apex; sutural margin with narrow dark brown band from scutellum to slightly after middle, gradually disappearing toward its apex; remaining area yellowish-brown basally, gradually and irregularly pale yellow toward apex. Procoxae orangish (missing femora, tibiae and tarsi); mesocoxae orangish, marbled with pale yellow (missing femora, tibiae and tarsi); metacoxae mostly light reddish-brown; metafemora, metatibiae and metatarsi yellowish, more pale yellow on peduncle of metafemora. Abdominal ventrites mostly light reddish-brown marbled with pale yellow, except brown wide centrodistal area of ventrite II, and irregular brownish basal area of III and V.

Head. Anterior area of head forming distinct rostrum. Frons moderately coarsely, sparsely punctate except smooth anterior plate; with a few minute yellowish setae and a few long, erect, brownish setae near eyes (yellower depending on light intensity), except glabrous anterior plate. Antennal tubercles almost contiguous basally, dorsally triangularly projected; anteriorly with sculpturing as on frons, smooth in remaining area; nearly glabrous. Vertex coarsely, moderately abundantly, partially confluently punctate between antennal tubercles and posterior margin of upper eye lobes, finely, sparsely punctate in remaining area, especially centrally; with very sparse, short and long, erect yellowish setae between antennal tubercles, and a few minute and moderately long yellowish setae posteriorly. Area behind upper eye lobes smooth close to eye, slightly rugose-punctate in remaining area; glabrous. Area behind lower eye lobes finely, sparsely punctate, with a few minute yellowish-setae throughout and a few long, erect yellowish setae. Genae distinctly longer than length of lower eye lobes, finely, sparsely punctate, except smooth distal area; with very sparse minute yellowish setae and a few long, erect yellowish setae, except glabrous smooth area. Median groove distinct from apex of frontal plate to area between antennal tubercles. Postclypeus moderately coarsely, sparsely, shallowly punctate; with sparse short and very short yellowish setae. Gulamentum smooth, glabrous posteriorly; anteriorly slightly depressed, moderately coarsely, confluently punctate (distinctly less so centrally), with sparse, short and long, erect yellowish setae. Apex of upper eye lobes acute; distance between upper eye lobes 0.94 times length of scape; in frontal view, distance between lower eye lobes 0.83 times length of scape. Antennae (from base of scape to apex of antennomere VII) 0.75 times elytral length, almost reaching apex of basal third of elytra. Scape arched in side view, finely, sparsely punctate, with sparse, short, erect yellowish setae on dorsal surface of anterior third, and sparse long, erect yellowish and brownish setae in remaining area of posterior 2/3. Pedicel finely, sparsely punctate, with sparse, long, erect yellowish setae. Antennomere III finely, moderately sparsely punctate basally, gradually denser toward apex; with sparse, short, decumbent yellowish setae, gradually denser toward apex, with long, erect yellowish setae interspersed throughout. Remaining antennomeres with decumbent yellowish pubescence not obscuring integument, with long, erect yellowish setae interspersed, shorter and sparser toward VII. Antennal formula (ratio) based on length of antennomere III: scape = 0.70; pedicel = 0.23; IV = 0.39; V = 0.53; VI = 0.43; VII = 0.43.

Thorax. Prothorax as long as wide, with distinct anterior and posterior constrictions; posterior margin slightly concave; sides slightly rounded, gradually divergent from anterior constriction to after midlength, then slightly rounded and convergent toward posterior constriction. Pronotum strongly longitudinally gibbous about middle; coarsely, sparsely punctate, with a few short, erect yellowish setae. Sides of prothorax finely and moderately finely, sparsely punctate; glabrous. Prosternum moderately finely striate-punctate, except smooth narrow anterior area; with short, erect, sparse yellowish setae in striate-punctate area, glabrous in smooth area. Prosternal process slightly narrowed centrally, with narrowest area about 4.5 times narrower than width of procoxal cavity. Ventral surface of mesothorax with yellowish-white pubescence not obscuring integument, denser laterally. Mesoventral process slightly widened in distal area, strongly emarginate on posterior margin; narrowest area about half width of procoxal cavity. Ventral surface of metathorax with abundant yellowish-white pubescence, not obscuring integument. Scutellum glabrous except for a few minute yellowish setae.

Elytra. Parallel-sided from humeri to about posterior fifth, where it is roundly narrowed; apex trun- cate, with short triangular projection in sutural angle; coarsely, densely punctate except sparse, coarse punctate dorsal area in distal fifth; with very sparse, long, erect yellowish setae, slightly more abundant near apex. Hind legs. Femora pedunculate-clavate; with sparse, long, erect yellowish setae. Tibiae with moderately abundant long, erect yellowish setae, distinctly shorter and denser in distal third ventrally.

Abdomen. Ventrites with sparse, short and long, erect yellowish setae.

Dimensions (mm). Total length 9.45; prothoracic length 1.80; anterior prothoracic width 1.25; posterior prothoracic width 1.75; maximum prothoracic width 1.85; humeral width 2.50; elytral length 5.95.

Type material. Holotype female from BRAZIL, Bahia (without detailed place and date), G. Bondar col. ( MZSP).

Remarks. Oxylymma birai sp. nov. ( Fig. 6–9 ) differs from O. gibbicollis Bates, 1873 , also described from Brazil (Bahia) and known only by the holotype ( Fig. 5 ), as follows: prothorax not distinctly widened centrally, mostly orangish to yellowish; pronotum with dark bands anteriorly. In O. gibbicollis the prothorax is distinctly widened centrally, mostly dark reddish-brown, and pronotum has dark bands anteriorly. The new species differs from O. caeruleocincta by the long rostrum (short in O. caeruleocincta ) and elytra without transverse black bands (present in O. caeruleocincta ). It differs from O. telephorina by the elytra with elongate dark bands anteriorly (only on humeri in O. telephorina ) and without dark posterior band (present in O. telephorina ), and by the long rostrum (short in O. telephorina ). See remarks under O. soniae .

Etymology. The species is dedicated to the late Ubirajara R. Martins (Bira) for his lifetime of work on and unparalleled contribution to the taxonomic knowledge of Neotropical 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.