Ectenessa caputnigra, Nascimento & Botero, 2018

Nascimento, Francisco E. De L. & Botero, Juan Pablo, 2018, New species, new records and notes in Cerambycidae from Colombia, Zootaxa 4375 (3), pp. 426-432 : 427

Ectenessa caputnigra sp. nov.

( Figs. 1–4 )

Holotype. Male. Integument yellow, except for: frons, scape, pedicel, basal area of antennomere III and elytral apex dark brown; apex of mandibles and genae blackish. Body covered by long and short, erect yellowish setae.

Head. Frons and vertex coarsely, moderately abundantly punctate. Upper eye lobes with five rows of ommatidia; distance between them about twice width of one upper lobe. Antennal tubercles slightly elevated. Antennae as long as 1.5 times body length, reaching elytral apex at middle of antennomere VII; surface of scape granulate-punctate; antennal formula, based on length of antennomere III: scape = 0.70; pedicel = 0.12; IV = 1.01; V = 1.01; VI = 0.98; VII = 0.90; VIII = 0.85; IX = 0.80; X = 0.75; XI = 1.20.

Thorax. Prothorax slightly longer than wide; sides abundantly punctate except striate distal area (widened toward ventral side). Pronotum with sparse, long setae; with four gibbosities: two at anterior third and two at posterior third. Anterior half of prosternum transversely, finely striate (without punctures); posterior half with punctures as on sides of prothorax laterally, finer, sparser centrally; with short, sub-erect, moderately abundant setae. Prosternal process narrowed centrally and with elevated edges; mesoventral process as wide as mesocoxal cavity. Elytra elongate, three times as long as humeral width; each elytron slightly narrowed distally, more distinctly so near apex; surface abundantly punctate, with sparse, long erect, setae; apex bispinose, external spine long (longer than 3/4 length of pedicel).

Legs. Profemora fusiform, meso- and metafemora slightly clavate; metatarsomere I slightly longer than II–III together.

Abdomen. Urosternites moderately coarse, sparsely punctate, with sparse, short and long setae interspersed.

Measurements, in mm. Total length, 13.2; length of prothorax at center, 2.6; anterior width of prothorax, 1.8; posterior width of prothorax, 1.8; humeral width, 3.0; elytral length, 9.0.

Etymology. The name is a reference to the darker dorsal color of portions of the head.

Type material. Holotype male, COLOMBIA, Antioquia : San Luis ( Vereda Filo de Hambre , 5°59’03”N 74°57’11”W, 770 m), 19–20.XI.2015, V. Sinyaev & J. Machado leg. ( MZSP) . Paratype male, COLOMBIA, Casanare: Agua Azul , no date and collector indicated, MPUJ _ ENT0041116 ( MPUJ) .

Remarks. Among the species without fascia or bands of different elytral colors, Ectenessa caputnigra sp. nov. is most similar to E. lurida Martins, 1973 , recorded for Trinidad and Tobago, Venezuela and Colombia. These species are similar by the yellowish concolorous integument of the femora with the extreme apex slightly darkened and by the absence of different colored fascia or bands. Ectenessa caputnigra sp. nov. differs from E. lurida by the frons, scape, pedicel, basal area of antennomere III and elytral apex from dark brown to black, elytra with longer external spine (longer than 3/4 length of pedicel) and sutural spicule. In E. lurida , the frons, scape, pedicel, basal area of antennomere III and elytral apex are concolorous with the rest of the body, the elytra have the external spine shorter (less than half length of pedicel), and the sutural spicule is absent or very reduced. Ectenessa caputnigra sp. nov. also resembles E. scansor (Gounelle, 1909) by the blackened areas of the head, scape and elytral apex, but differs by: head with yellowish areas; antennomere III without carina; prothorax concolorous with most elytral surface; and femora mostly light colored. In E. scansor , the entire head and prothorax are dark (contrasting with mostly yellowish elytra), the antennomere III is carinate, and the femora is bicolorous. Martins (1998) mentioned that the elytra of some specimens of E. scansor have traces of yellowish bands, a characteristic not observed in the new species.

Figures

FIGURES1–7. 1–4, Ectenessa caputnigra sp. nov., holotype,male:1, dorsal view; 2, ventral view; 3, lateral view; 4, detail of head, frontal view.5–7, Adiposphaerion rubrum, male:5, lateral view; 6, dorsal view; 7, ventral view, with detail of femora.