Estola acirculata, Bezark & Santos-Silva, 2024

Bezark, Larry G. & Santos-Silva, Antonio, 2024, New World Lamiinae (Coleoptera, Cerambycidae): new species, new records, and notes, Faunitaxys 12 (6), pp. 1-11 : 6-7

Estola acirculata sp. nov.

( Fig. 10 -14 )

ZooBank:https://zoobank.org/ D9257034-EF0C-4DF7-82B7-B3230CF51E25

Holotype, ♀, ECUADOR, Loja: 18.5 km N Gonzanama , 4°08'08.5"S, 79°26'36.4"W, 22.II.2006,F. T. Hovore & I. Swift leg.( CASC, formerly LGBC).

Description of the holotype

Coloration. – Integument mostly black; ventral mouthparts dark reddish brown withirregular blackishareas, except blackishpalpomereswithyellowishbrown apex; gulamentum brownish; scape and pedicel dark brown; antennomere dark orangish brown basally, brown on remaining surface; antennomere IV orangishbasally, dark orangishbrown on remainingbasalthird, blackish on apical third, brown on remaining surface; antennomere V orangish basally, gradually brown toward about middle, then dark brown toward apex; antennomere VI orangish on basal third, dark brown on remaining surface; antennomeres VII and IX orangish on basal quarter, dark brown on remaining surface; antennomere VIII light orangish on basal 3/4, dark brown on apical quarter; antennomeres X-XI orangish on basal half, dark brown on apical half. Legs dark brown.Central apex of abdominal ventrites 1-4 brownish.

Head. – Frons abundantly, coarsely punctate; with moderately abundant straw-colored pubescence not obscuring integument, pubescence denser centrally, with short white setae interspersed; with sparse, long, erect white setae interspersed. Vertex with sculpturing as on frons; with abundant light yellowish-brown pubescence not obscuring integument, pubescence irregularly dense on some areas; with a few long, erect whitish setae interspersed laterally. Area behind eyes abundantly, coarsely punctate; with abundant yellowish-brown pubescence, dense close to eyes, sparser on transverse central area behind lower eye lobe; with a few long, erect white setae interspersed near eye. Genae 0.54 times length of lower eye lobe; with moderately abundantly straw-colored pubescence close to eyes, gradually sparser toward glabrous apex. Antennal tubercles abundantly, finely, shallowly punctate; with abundant straw-colored pubescence not obscuring integument, and short whitish setae interspersed. Wide central area of postclypeus with moderately sparse, both straw-colored and whitish pubescence close to frons, denser, mostly light yellowish-brown on transverse central area, and distinctly longer and paler centrally close to anteclypeus; with one long, erect seta on each side, setae dark brown basally, paler on remaining surface, and long, erect yellowish-white setae interspersed close to anteclypeus. Labrum with abundant whitish pubescence on posterior 2/3, absent on anterior third, except fringe of brownish setae on center of anterior margin; with long, erect yellowish-white setae interspersed on pubescent area. Gulamentum smooth, glabrous, except intermaxillary process with abundant yellowish-white pubescence not obscuring integument. Eye lobes connected by irregular row of ommatidia; distance between upper eye lobes 0.45 times distance between outer margins of eyes; in frontal view, distance between lower eye lobes 0.69 times distance between outer margins of eyes. Antennae 1.2 times elytral length, almost reaching elytral apex. Scape with abundant light yellowish-brown pubescence partially obscuring integument, with moderately short, decumbent white setae interspersed dorsally and laterally and abundant whitishpubescence not obscuring integument ventrally;with long, erect white setae interspersed throughout. Pedicel with abundant yellowish-white pubescence partially obscuring integument on base and lateral surfaces and entire ventral surface, and abundant light whitish pubescence partially obscuring integument on remaining surface; with a few long, erect whitish setae interspersed throughout. Antennomere III with abundant yellowish-white pubescence partially obscuring integument on basal quarter and apical third of dorsal and lateral surfaces, and abundant whitish pubescence not obscuring integument ventrally; remaining surface with abundant light yellowish-brown pubescence partially obscuring integument; with sparse, long, erect white setae interspersed ventrally.Antennomere IV with abundant white pubescence on basal fifth, abundant light yellowish-brown pubescence partially obscuring integument on remaining dorsal surface, this pubescence slightly darker toward apex, and abundant whitish pubescence not obscuring integument on remaining surface; with sparse, short, erect whitish setae interspersed dorsally, and sparse, long, erect white setae interspersed ventrally. Antennomeres V–VII with abundant white pubescence not obscuring integument basally and entire sides and ventral surface; remaining dorsal surface with abundant light yellowish-brown pubescence partially obscuring integument; with a few short, erect, yellowish-white setae interspersed dorsally, and a few long, erect white setae interspersed ventrally. Antennomeres VIII-XI with abundant white pubescence not obscuring integument; with sparse, short, erect white setae interspersed dorsally and laterally, short setae more abundant on XI, and a few long, erect setae interspersed ventrally on VIII-X.

Antennal formula based on length of antennomere III:

– Scape = 1.50. – Pedicel = 0.37. – IV = 1.62. – V = 1.06. – VI = 0.94. – VII = 0.81. – VIII = 0.75. – IX = 0.69. – X = 0.59. – XI = 0.50.

Thorax. – Prothorax wider than long; lateral tubercles moderately large, conical, located centrally. Pronotum with U-shaped depression on center of anterior third; abundantly, coarsely punctate; with abundant light yellowish-brown pubescence, with short, decumbent whitish setae interspersed, pubescence sparser on U-shaped central area on anterior 2/3; with yellowish-white pubescence on center of anterior margin; with a few long, erect yellowish setae interspersed. Sides of prothorax abundantly, coarselypunctate; with abundant light yellowish-brown pubescence not obscuring integument, with short, decumbent white setae interspersed, with sparse, long, erect yellowish setae interspersed. Prosternum moderately sparsely, coarsely punctate; with abundant light yellowish-brown pubescence with short whitish setae interspersed laterally; central area with abundant light yellowish-brown pubescence distinctly shorter than laterally, with sparse, short, bristly whitish setae interspersed on anterior half. Prosternal process abundantly, coarsely punctate; with abundant yellowish-white pubescence not obscuring integument, and long, erect whitish setae interspersed; narrowest area 0.31 times procoxal width. Ventral surface of meso- and metathorax moderately abundantly, coarsely punctate, except minutely punctate central area of metaventrite; sides with dense light yellowish-brown pubescence not obscuring punctures; wide central area of mesoventrite with sparse light yellowish-brown pubescence, except dense pubescence close to mesocoxal cavities and mesoventral process; mesoventral process with sparse yellowish-white pubescence and long, erect yellowish-brown setae interspersed; central area of metaventrite with whitish pubescence not obscuring integument; apex of mesoventral process 0.54 times mesocoxal width. Scutellum with dense pale-yellow pubescence laterally, pubescence slightly sparser, lighter centrally.

Elytra. – Subparallel-sided on anterior half, slightly convergent from middle to posterior sixth, then distinctly narrowed toward rounded apex; moderately abundantly, coarsely punctate, punctures slightly finer on posterior half; with abundant yellowish-brown pubescence partially obscuring integument, and abundant, irregular whitish pubescent maculae interspersed; with long, erect setae interspersed, setae brownish basally, gradually whitish toward apex.

21 -24. Holotype. 21. Dorsal habitus. 22. Lateral habitus. 23. Head, frontal view. 24. Labels. 25- 28. Specimen with same data as holotype. 25. Dorsal habitus. 26. Lateral habitus. 27. Head, frontal view. 28. Labels.

Legs. – Femora with abundant light yellowish-brown pubescence not obscuring integument, pubescence denser, bristly on mesofemora. Tibiae with abundant light yellowish-brown pubescence not obscuring integument dorsally, abundant whitish pubescence not obscuring integument laterally and ventrally, except ventral surface of protibiae with dense, bristly yellowish-brown pubescence between basal third and apical fifth and abundant, bristly pale-yellow pubescence on apical fifth, dorsal sulcus of mesotibiae with dense, bristly dark yellowish-brown pubescence, abundant long, bristly yellowish-brown setae dorsally between sulcus and apex of dorsal surface and bristly yellowish-brown pubescence on apical quarter of ventral surface; with long, erect white setae interspersed dorsally and laterally on protibiae and throughout on meso- and metatibiae. Dorsal surface of tarsi with abundant whitish pubescence not obscuring integument, and long, erect whitish setae interspersed.

Abdomen. – Ventrites moderately sparsely, coarsely punctate laterally; with dense light yellowish-brown pubescence laterally, except glabrous areas surrounding punctures, and abundant yellowish-white pubescence not obscuring integument centrally; with long, erect whitish setae interspersed. Apex of ventrite 5 and last tergite with

abundant long yellow setae directed backward; apex of ventrite 5 somewhat truncate.

Dimensions (mm)

– Total length, 7.85;

– Prothoracic length, 1.45;

– Anterior prothoracic width, 1.65;

– Posterior prothoracic width, 1.80;

– Maximum prothoracic width, 2.25;

– Humeral width, 2.80;

– Elytral length, 5.65.

Etymology. – The specific epithet “ acirculata ,” meaning not circled, is from the Greek prefix “a”, meaning not/without + the Latin adjective “circulata”, meaning circled; it refers to the unmarked tibiae, which differentiate this species from the similar E. albosetosa .

Figures

Fig. 10 -14. Estola acirculata sp. nov., holotype ♀. 10. Dorsal habitus. 11. Ventral habitus. 12. Lateral habitus. 13. Head, frontal view. 14. Eye, lateral view.