Trestonia solangeae Nearns and Tavakilian, 2012

Nearns, Eugenio H. & Tavakilian, Gérard-Luc, 2012, A new genus and five new species of Onciderini Thomson, 1860 Coleoptera: Cerambycidae: Lamiinae) from South America, with notes on additional taxa, Insecta Mundi 2012 (266), pp. 1-23 : 18-21

Trestonia solangeae Nearns and Tavakilian , sp. nov.

( Figures 9 a-d)

Description. Male. Length 13.0 mm (measured from vertex to elytral apices), width 4.5 mm (measured across humeri). Habitus as in Fig. 9a. General form elongate-oblong, moderate-sized. Integument dark brown to black, with ferrugineous and ochraceous pubescence; head, pronotum, elytra, and legs with predominantly ferrugineous pubescence; each elytron with a distinct, subtriangular, ochraceous macula near center, extending apically from lateral margins and not attaining suture; scutellum and ventral surface with ochraceous pubescence.

Head with frons roughly subquadrate, about 4 times width of one lower eye lobe (as in Fig. 9c). Eyes with lower lobes moderate-sized, oblong; narrowest area connecting upper and lower eye lobes about 2 ommatidia wide. Genae roughly elongate, slightly taller than lower eye lobes.

Antennae about 1.25 times than body; antennal tubercles feebly elevated, widely separated, tubercles unarmed at apex; scape robust, strongly clavate, with deep basal groove on inner face; scape with dorsal surface rugose, ventral surface distinctly flat and smooth; antennomeres III strongly curved. Antennal formula based on antennomere III: scape=0.75; II=0.17; III=1; IV=0.76; V=0.7; VI=0.55; VII=0.51; VIII=0.48; IX=0.47; X=0.46; XI=0.42.

Pronotum subcylindrical, slightly narrower at base, transverse, about 1.5 times as wide as long, sides irregular, with an small, blunt protuberance each side behind middle ( Fig. 9a, d); disk with two broad, feebly elevated lateral tubercles; each lateral tubercle adjacent to apical transverse sulcus; lateral tubercles rugose.

Scutellum transverse, apex rounded.

Elytra about 2 times as long as width at humeri ( Fig. 9a, d), nearly 4 times as long as pronotal length, about 1.25 times broader basally than pronotum at widest (behind middle); lateral margins nearly straight, slightly attenuate to apices, apices jointly rounded; base of each elytron with a moderate gibbosity; basal 1/3 of elytra and humeral angles with shiny, glabrous granules of varying sizes; elytra with dense punctation, surface granulate-punctate, with mix of shallow and deep punctures, becoming more shallow at apical 1/2; humeri prominent, anterior margin arcuate, angle with moderate-sized, obtuse tubercle.

Venter with procoxae large, globose, not uncate, with moderately-large, obtuse, transversely rugose protuberance projecting anteriorly; narrowest area of prosternal process between procoxae about 1/5 as wide as procoxal cavity; apex of prosternal process subtriangular. Mesosternal process about as wide as mesocoxal cavity; mesosternal process feebly emarginate. Fifth abdominal sternite about as long as IV.

Legs short in length; femora robust; profemora transversely rugose basally; metafemora clavate apically; tibiae slightly expanded apically; metafemora about 1/4 as long as elytra; tarsomere V about as long as I-IV combined.

Female. Unknown.

Type Material. Holotype, male ( Fig. 9 a-d), “ Bolivie, Prov. Cochabamaba, P. Germain 1889, Muséum Paris 1952, Coll R Oberthür” ( MNHN).

Etymology. This species is named in honor of Dilma Solange Napp, for her important contributions to the study of Neotropical Cerambycidae . 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: head, pronotum, elytra, and legs with predominantly ferrugineous pubescence; each elytron with a distinct, subtriangular, ochraceous macula; basal 1/3 of elytra and humeral angles with shiny, glabrous granules; and elytra with dense punctation, surface granulate-punctate. Trestonia solangeae is described from a single male specimen. Nothing is known about the habitat and behavior of this species.

New Distribution Records

Peritrox marcelae Nearns and Tavakilian, 2012 is recorded from Brazil, new country record. One male specimen, measuring 17.5 mm from vertex to elytral apices (MNRJ), “ Brasil, Mato Grosso: Sinop, IX.1974, Alvarenga & Roppa col.” This species was previously known only from French Guiana ( Nearns and Tavakilian 2012).

Pseudobeta ferruginea Galileo and Martins, 1990 is recorded from French Guiana, new country record. Two specimens: one male (MNHN), “Route de Kaw pk 46, 7 Septembre 1986, Guyane, piégeage lumineux, Gérard Tavakilian leg., 0642”; one female (MNHN), “Piste de Belizon, pk 10, 11 Septembre 1993 Guyane, piégeage lumineux, Jérôme Hulin leg., 642.” This species was previously known from Brazil ( Monné 2005; Monné and Bezark 2012).

Tibiosioma martinsi Nearns and Swift, 2011 is recorded from Peru and Brazil, new country records. Two female specimens (ENPC), “ Pérou, Tarapoto, Mai à Août 1886, M. de Mathan”; “[ Brazil] Sto. Paulo dOlivença, M. de Mathan, Mai 1883.” This species was previously recorded from Ecuador ( Monné and Bezark 2012; Nearns and Swift 2011).

Trestonia exotica Galileo and Martins, 1990 is recorded from French Guiana, new country record. One female (MNHN), “Piste de Belizon, pk 1, 11 February 1994, Guyane, battage, Frank Hovore leg.” This species was previously recorded from Ecuador and Brazil ( Monné 2005; Monné and Bezark 2012).

Trestonia morrisi Martins and Galileo, 2005 is recorded from French Guiana, new country record. One female specimen (ENPC), “ Guyane Fr., Rt. de Nancibo, pk /56, 4-12 August 1996, F.T. Hovore, coll.” This species was previously known from Bolivia ( Monné and Bezark 2012; Wappes et al. 2006).

Tritania dilloni Chalumeau, 1990 is recorded from French Guiana and Suriname, new country records. Two specimens ( Fig. 10 a-d): one male, measuring 20.0 mm from vertex to elytral apices (RMNH), “Brownsberg Reserve [ Suriname] (450-480 m), 16 January 1972, G.F. Mees leg.”; one female, measuring 17.0 mm from vertex to elytral apices (MNHN), “[ French Guiana] Montagne de la Trinité (500 m), 8 septembre 1988, piégeage lumineux, Pierre Souka leg. [53°24’51’’W, 4°37’15’’N].” This species was previously known from Brazil and Venezuela ( Chalumeau 1990; Monné 2005; Monné and Bezark 2012; Nearns and Swift 2011).