Compsibidion woodleyi Wappes, Santos-Silva and Galileo, 2018

Wappes, James E., Santos-Silva, Antonio & Galileo, Maria Helena M., 2018, Description of two new Bolivian Cerambycidae and a Costa Rican record for an African prionine (Coleoptera), Insecta Mundi 625, pp. 1-9 : 2-6

Compsibidion woodleyi Wappes, Santos-Silva and Galileo , new species

( Fig. 1–4 )

Description. Male. Dorsal side of head and pronotum black; ventral side of head dark brown, almost black, except yellowish-brown centrobasal area; scape dark brown, almost black; antennomeres dark brown, gradually lighter toward distal segments; ventral side of prothorax dark brown; ventral side of meso- and metathorax mostly reddish-brown, darkened on some areas, gradually lighter toward apex of metaventrite. Elytra black, gradually brown after middle, with small, oblique pale-yellow macula on about end of basal third; coxae mostly reddish-brown; femoral peduncle light reddish-brown, and femoral club brown; tibiae blackish basally, dark reddish-brown on remaining surface; tarsi brown on tarsomeres I–II, yellowish-brown on remaining tarsomeres; abdominal ventrites brown, gradually lighter toward ventrite V, except narrow, transverse yellowish band at apex of ventrites I–IV.

Head. Frontal plate longitudinally depressed centrally; finely punctate centrally, slightly transversely striate laterally; remaining surface of frons finely vermiculate centrally, rugose-punctate laterally; with short, sparse, decumbent pale-yellow setae. Area between antennal tubercles and upper eye lobes rugose-punctate; area between apex of upper eye lobes and prothorax finely, moderately sparsely punc- tate; with short, sparse, decumbent pale-yellow setae, and a few long, erect pale-yellow setae between upper eye lobes. Area behind upper eye lobes finely, moderately sparsely punctate (less so toward lower eye lobe); with a few long, erect pale-yellow setae close to eyes, glabrous on remaining surface. Area behind lower eye lobes very finely, sparsely punctate; with long, erect pale-yellow setae close to eye, glabrous on remaining surface. Genae minutely punctate close to lower eye lobe, smooth toward apex; with short, decumbent pale-yellow setae except on glabrous distal area. Antennal tubercles rugosepunctate frontally, finely, sparsely punctate on remaining surface, except nearly smooth apex; with short, decumbent, sparse pale-yellow setae. Median groove distinct from frontal plate to area between upper eye lobes. Gulamentum smooth and glabrous between prothorax and eyes, coarsely, moderately abundantly punctate on remaining surface (less so centrally); with short, sparse, decumbent pale-yellow setae interspersed with long, erect pale-yellow setae. Distance between upper eye lobes 0.51 times length of scape; in frontal view, distance between lower eye lobes 0.79 times length of scape; upper eye lobes with four rows of ommatidia. Antennae 2.0 times elytral length, reaching elytral apex at basal third of antennomere IX. Scape basally curved in lateral view, gradually widened toward apex; with short, sparse, decumbent pale-yellow setae interspersed with long, erect pale-yellow setae. Antennomere III tumid, not carinate dorsally, with decumbent, sparse pale-yellow setae interspersed with long, erect pale-yellow setae; antennomere IV tumid, slightly narrower than III, not carinate, with setae as on III; remaining antennomeres slender, especially from VI, with pale-yellow pubescence not obscuring integument, and long, erect pale-yellow setae at apex. Antennal formula (ratio) based on antennomere III: scape = 0.67; pedicel = 0.14; IV = 0.63; V = 0.79; VI = 0.86; VII = 0.81; VIII = 0.77; IX = 0.75; X = 0.71; XI = 0.88.

Thorax. Prothorax subcylindrical, slightly rounded laterally, with basal constriction distinct, 1.2 times longer than wide. Pronotum with slightly elevated central gibbosity, between basal constriction and middle; coarsely, partially confluently punctate on each side of central gibbosity, finely, sparsely punctate on area of basal constriction, smooth on central gibbosity, and nearly smooth on remaining surface; with pale-yellow pubescence in area of basal constriction, sides of basal half, nearly all area close to central gibbosity (slightly sparser than basally), and wide transverse band on each side of distal half; remaining surface with very sparse, decumbent pale-yellow setae except glabrous central gibbosity; with long, erect, sparse pale-yellow setae. Sides of prothorax nearly smooth except a few coarse punctures centrally near pronotum, and finely striate distal area; with pale-yellow pubescence near pronotum, gradually shorter, less conspicuous toward ventral side, except striate area with sparse pubescence; with long, erect, sparse pale-yellow setae near pronotum. Prosternum with pale-yellow pubescence in basal half, with long, decumbent pale-yellow setae interspersed; remaining surface nearly glabrous except sparse, erect, long pale-yellow setae. Prosternal process centrally about 1/4 width of procoxal cavity. Procoxal cavities slightly open posteriorly. Metaventrite with sparse pale-yellow pubescence centrally, slightly denser laterally. Mesoventral process somewhat tab-shaped at sides of distal area, distinctly emarginate centrally at apex. Mesanepisternum, mesepimeron, and metanepisternum with moderately dense paleyellow pubescence not obscuring integument. Metaventrite with coarse, sparse, shallow punctures on sides of basal third; with pale-yellow pubescence not obscuring integument, distinctly sparser centrally; with long, erect, sparse pale-yellow setae. Scutellum with pale-yellow pubescence in distal half, interspersed with a few long, nearly decumbent golden setae. Elytra. Surface very slightly rugose; minutely, sparsely punctate; with coarse, sparse punctures from which emerges a long, erect golden seta (sub-aligned in basal half); with minute, sparse, decumbent pale-yellow setae; apex rounded at outer side, somewhat rounded projection at sutural angle. Legs. Femora clavate; with pale-yellow pubescence not obscuring integument, with long, erect, sparse pale-yellow setae interspersed. Tibiae slightly, gradually widened toward apex; with pale-yellow pubescence not obscuring integument, with long, erect pale-yellow setae interspersed. Metatarsomere I about as long as II–III together.

Abdomen. Ventrites with yellowish-white pubescence not obscuring integument, slightly denser laterally, interspersed with long erect, sparse pale-yellow setae, except in glabrous yellowish area of ventrites I–IV. Apex of ventrite V, widely, slightly emarginate centrally.

Dimensions in mm (holotype male). Total length 7.00; prothoracic length 1.60; basal prothoracic width 1.20; distal prothoracic width 1.20; max. prothoracic width 1.30; humeral width 1.65; elytral length 4.65.

Type material. Holotype male from BOLIVIA, Santa Cruz: Refugio Los Volcanes (4 km N Bermejo; 18°10 ʹ S / 63°60 ʹ W; 1,045–1,350 m), 31.X.2013, J. Wappes & K. Kuckartz col. ( FSCA).

Etymology. Named for Norm Woodley, Hereford, AZ, who has so kindly assisted the authors with numerous reviews, consultation on difficult taxonomic problems and for his valued friendship.

Remarks. Compsibidion woodleyi sp. n. shares the characters of thick antennomere III, which is not carinate, with a number of other species of Compsibidion . However, it differs from them as follows: 1. C. angulare (Thomson, 1867) – outer angle of elytral apex unarmed, and pronotum lacking pubescent bands ( C. angulare has elytral apex with outer angle spined and pubescent pronotal bands); 2. C. balium Napp and Martins, 1985 – general color dark brown, almost black, outer elytral apex unarmed ( C. balium is generally colored orangish-yellow and the outer elytral apex has a long spine); 3. C. clivum Martins, 1971 – thicker body, antennomere III widened from near the base, then parallel-sided, and elytral apex distinctly wider ( C. clivum has body slender, antennomere III gradually widened toward apex, and elytral apex distinctly narrower); 4. C. concisum Napp and Martins, 1985 – base and apex of the elytra similarly colored, and elytral apex unarmed ( C. concisum has base and apex of the elytra with distinctly different color, and elytral apex with outer spine); 5. C. decemmaculatum (Martins, 1960) – antennomere IV thick, elytral setae not distinctly thick, elytral apex unarmed at outer angle ( C. decemmaculatum has antennomere IV slender, elytral apex slightly concave, with outer angle slightly projected, and elytral setae distinctly thick); 6. C. fairmairei (Thomson, 1865) – body robust, and elytral apex wide, with outer angle rounded ( C. fairmairei with body slender, and elytral apex narrower, with outer angle not rounded); 7. C. guanabarinum (Martins, 1962) – elytra mostly dark brown, with outer angle unarmed ( C. guanabarinum has large light areas on elytra, and outer angle of apices spiniform); 8. C. inflatum Martins and Galileo, 2014 – antennomere III parallel-sided almost from the base, elytral setae about as long as diameter of antennomere III, and prothorax slightly wider than length of antennomere III ( C. inflatum has antennomere III gradually widened from base, with elytral setae distinctly longer than diameter of antennomere III, and prothorax distinctly wider than length of antennomere III); 9. C. inornatum (Martins, 1962) – elytra with light macula in basal half, and elytral apex unarmed ( C. inornatum without macula, and with long spine at outer elytral apex); 10. C. megarthron (Martins, 1962) – elytra nearly entirely dark, and elytral apex unarmed ( C. megarthron nearly entirely light, and elytral apex with long spine at outer angle); 11. C. monnei Martins, 1969 – general color dark brown, almost black, and elytra with a single, oblique light macula directed toward scutellum ( C. monnei with general color light reddish-brown, and elytra with two light maculae, the anterior one elliptical and not directed toward scutellum); 12. C. paradoxum Martins, 1971 – elytra nearly entirely dark, and antennomere IV short and thick ( C. paradoxum with elytra entirely lighter, and antennomere IV long and slender); 13. C. psydrum Martins, 1969 – elytra nearly entirely dark, with apex wide and unarmed ( C. psydrum has elytra mostly light, and elytral apex narrow, and projected at outer angle); 14. C. punga Martins and Galileo, 2007 – antennomere IV thick, and elytral apex unarmed ( C. punga has antennomere IV slender, and elytral apex spiniform at outer angle); 15. C. reichardti (Martins, 1962) – elytra mostly dark brown ( C. reichardti has basal half of the elytra reddish and distal half black); 16. C. singulare (Gounelle, 1909) – antennomere IV thick, and outer elytral apex unarmed ( C. singulare has antennomere IV not thick, and outer elytral apex spiniform); 17. C. sphaeriinum (Bates, 1870) – antennomere IV thick, and outer elytral apex unarmed ( C. sphaeriinum has antennomere IV not thick, and outer elytral apex spiniform); 18. C. taperu Martins and Galileo, 2007 – pronotum without dense white pubescent macula, and elytra nearly entirely dark, with outer angle rounded ( C. taperu with dense pubescent macula, and elytra with large light areas); 19. C. trichocerum (Martins, 1962) – elytra nearly entirely dark, elytral apex with rounded outer angle ( C. trichocerum nearly entirely reddish, and outer elytral apex with long spine); 20. C. trinidadense (Gilmour, 1963) – antennomere III about as wide as IV, and elytral apex rounded at outer angle ( C. trinidadense has antennomere III distinctly wider than IV, and elytral apex spiniform); 21. C. unifasciatum (Gounelle, 1909) – antennomere IV thick, and elytral apex unarmed ( C. unifasciatum has antennomere IV slender, and elytral apex with spine at outer angle); 22. C. varipenne Martins, 1969 – antennomere IV thick, and outer elytral apex rounded ( C. varipenne has antennomere IV slender, and elytral apex spiniform).

Currently, 17 species of Compsibidion are only known from females. Of these, five lack spines on the outer elytral apex as in the holotype male of C. woodleyi sp. n. Typically, this kind of sexual dimorphism (elytral apex armed in female and unarmed in male) does not occur in Compsibidion . Of the five species with unarmed outer elytral apex, only C. achiraensis Santos-Silva, Galileo and Wappes, 2017 and C. amboroensis Santos-Silva, Galileo and Wappes, 2017 could even remotely be confused with the new species (the general appearance of the other three are dramatically different). Compsibidion woodleyi sp. n. differs from both these species by the light elytral macula placed at basal third, smaller, and ending away from the suture (placed at about middle, larger, and ending nearer the suture in C. achiraensis and C. amboroensis ), and elytral apex almost truncate (uniformly rounded in C. achiraensis and C. amboroensis ).

Compsibidion woodleyi sp. n. can be included in the alternative of couplet “4” from Santos-Silva et al. (2017):

4 ʹ (2). Elytral apex wide, nearly truncate; with light-colored elytral macula placed at basal third; Bolivia............... C. woodleyi Wappes, Santos-Silva and Galileo , new species

— Elytral apex uniformly rounded, with light-colored elytral macula placed at about middle.. 4

4(4 ʹ). Upper eye lobes with 5 rows of ommatidia; elytra at least partially with moderately abundant, decumbent pubescence; Bolivia......................................................................... C. amboroensis Santos-Silva, Galileo and Wappes, 2017

— Upper eye lobes with 3 rows of ommatidia; elytra with very sparse, decumbent pubescence; Bolivia................... C. achiraensis Santos-Silva, Galileo and Wappes, 2017

Figures

Figures 1–10. Illustrations of Bolivian Cerambycidae. 1–4) Compsibidion woodleyi new species, holotype male. 1) Dorsal habitus. 2) Ventral habitus. 3) Lateral habitus. 4) Head, frontal view. 5–9) Drycothaea dozieri new species, holotype female. 5) Head, frontal view. 6) Mesosternal process. 7) Dorsal habitus. 8) Ventral habitus. 9) Lateral habitus. 10) Drycothaea viridescens, male, mesosternal process.