New Taxa and Combinations in Onciderini Thomson, 1860 (Coleoptera: Cerambycidae: Lamiinae) from Central and South America, with notes on additional taxa Eugenio H. Nearns Author Nearns, Eugenio H. Author Tavakilian, Gérard-Luc text Insecta Mundi 2012 2012-04-06 2012 231 1 24 journal article 10.5281/zenodo.10108642 1942-1354 10108642 C7CFD7A4-0FE1-44BE-BB3D-DEE52867C713 Trestoncideres santossilvai Nearns and Tavakilian , sp. nov. ( Figures 6a–d ) Description. Male . Length 12.0–13.0 mm (measured from vertex to elytral apices), width 3.5–4.0 mm (measured across humeri). Habitus as in Fig. 6a . General form elongate-oblong, small to moderatesized. Integument generally dark brown or black, with whitish, gold, and ochraceous pubescence; mesepisternum, mesepimeron, metepisternum with dark brown and gold pubescence; metasternum with distinct vitta formed by dense, white pubescence, about as wide as metepisternum, not reaching margin with metepisternum ( Fig. 6b ); lateral margin of metasternum with dark brown and gold pubescence; remaining portions of venter and femora with whitish pubescence; apical 1/3 of elytra slightly darker than basal 2/3. Head with frons roughly subquadrate, slightly transverse, about 3 times width of lower eye lobe (as in Fig. 6c ). Eyes with lower lobes moderate-sized, ovate; narrowest area connecting upper and lower eye lobes about 2-3 ommatidia wide. Genae elongate, about as tall as lower eye lobes. Antennae about 1.25 times longer than body; antennal tubercles prominent, widely separated; tubercles armed at apex with short blunt horn; scape robust, clavate; antennomere III curved, slightly sinuate. Antennal formula based on antennomere III: scape=0.85; II=0.29; III=1; IV=0.76; V=0.72; VI=0.65; VII=0.63; VIII=0.5; IX=0.53; X=0.47; XI=0.48. Pronotum roughly subcylindrical, slightly narrower at base, transverse, about 1.4 times as wide as long, sides irregular, with a small, acute protuberance each side behind middle ( Fig. 6d ); disk with median, oval, glabrous region at basal half. Scutellum transverse, apex rounded; outer margins fringed with whitish pubescence, central 1/2 glabrous. Elytra about 2 times as long as width at humeri ( Fig. 6a ), about 3.3 times as long as pronotal length, about 1.25 times broader basally than pronotum at widest (at base); lateral margins nearly straight, gradually rounded to apices at apical 1/3, apices jointly rounded; base of each elytron with a feeble gibbosity; basal 1/3 of elytra with moderate to dense punctation, surface granulate-punctate; humeri slightly prominent, anterior margin arcuate, angle with small, obtuse tubercle. Venter with procoxae large, globose, not uncate; narrowest area of prosternal process between procoxae about 1/4 as wide as procoxal cavity; apex of prosternal process subtriangular. Mesosternal process about 1/3 as wide as mesocoxal cavity; mesosternal process subtruncate. Fifth sternite about 1.5 times as long as IV, apex feebly emarginate. Legs short in length; pro- and mesofemora robust; metafemora clavate apically; tibiae expanded apically; metafemora about 1/4 as long as elytra. Female . Length 12.0–14.0 mm (measured from vertex to elytral apices), width 4.0– 4.5 mm (measured across humeri). Similar to male except antennae shorter, surpassing elytral apex at antennomere X; fifth sternite about 3 times as long as IV, with a median triangular impression. Type Material. Holotype , male ( Fig. 6a, c–d ), “ Piste de Belizon , pk 24, 19 septembre 1992, Guyane , piégeage lumineux, Michel Duranton leg.” ( MNHN ) . Allotype , female ( Fig. 6b ), “ Brazil : Amazonas , Rio Taruma Mirim , 20 km nw Manaus , 02Mar1979 , 02º53’S 060º07’W ; Black water inundation forest canopy fogged with Pyrethrum sample #44; Montgomery, Irwin, Schimmel, Krischik, Date, Bacon colls.” Figure 6. Trestoncideres santossilvai , sp. nov. a) Holotype male, dorsal habitus. b) Allotype female, lateral habitus. c) Holotype male, close-up of head. d) Holotype male, close-up of pronotum. ( USNM ). Nine paratypes : one male , “ Montsinery FRG Guyane , 24 Juillet 1985 , Piégeage lumineux, P. Souka leg., 0489” ( MNHN ); one male , “Risque-tout ( FRG pk19), 7 Mai 1983 , Piégeage lumineux, P. Sarry leg., 0489” ( MNHN ); one female , “ Route de Kaw pk 38, 13 Janvier 1986 , Guyane , Piégeage lumineux, P. Gerdelat leg., 0489” ( ENPC ); one female , “Piste Risquetout pk 16, 28 Juin 1987 , Guyane , Piégeage lumineux, Marc Thouvenot leg.” ( MNHN ); one female , “ Kaw PK 37, 20-VII-2001 , PL ” ( DFPC ); one male , “ Guyane , 12/V/1991 lumière route de Kaw PK 47, J-L Giuglaris leg.” ( PHDC ); one male , “ Guyane , 06/III/1997 lumière RD06 PK19 J-L Giuglaris leg.” ( JLGC ); one male , “ Guyane , 21/VII/1990 lumière Cacao J-L Giuglaris leg.” ( JLGC ); one female , “ Guyane , 15/II/2006 lumière RD06 PK38 J-L Giuglaris leg.” ( JLGC ) . Etymology . We take pleasure in naming this species in honor of Antonio Santos-Silva, for his friendship, collaboration, and many contributions to the study of Neotropical Cerambycidae and Disteniidae . The epithet is a noun in the genitive case. Diagnosis and Remarks. This species is distinguished from its congeners by the combination of the following characters: antennae, pronotum, and elytra with whitish and gold pubescence; pronotum with a small, acute protuberance each side behind middle; scutellum glabrous except for outer margins, which are fringed with whitish pubescence; and apical 1/3 of elytra slightly darker than basal 2/3. In addition, T. santossilvai can be distinguished from its congeners by the lateral margins of the metasterna not with dense white pubescence (in T. albiventris and T. laterialba , the dense white pubescence extends to the lateral margins of the metasterna, contiguous with metepisterna); outermost margin of metepisternum with dark brown and gold pubescence. Trestoncideres santossilvai , sp. nov. is described from 11 specimens : six males and five females . Nothing is known about the habitat and behavior of this species; however, all specimens from French Guiana were collected at light and the specimen from Brazil was collected by canopy fogging with pyrethrum.