Euryestola skillmani Martins, Galileo, and Santos-Silva

Martins, Ubirajara R., Galileo, Maria Helena M. & Santos-Silva, Antonio, 2015, Three New Species of Lamiinae (Coleoptera: Cerambycidae), The Coleopterists Bulletin 69 (3), pp. 395-401 : 398-399

Calliini Euryestola skillmani Martins, Galileo, and Santos-Silva , new species

( Figs. 4–6 )

Description. Integument dark brown, almost black; with small, irregular brown areas on elytra; ante-clypeus, clypeus, central area of gula, and narrow transverse band at apex of urosternitos I–IV reddish brown. Head: Frons distinctly transverse; finely, densely punctate, interspersed with coarse, moderately abundant punctures; pubescence brown-orange, not obliterating integument, centrally sparser. Antennal tubercles densely, finely punctate; sparsely, brown-orange pubescent, slightly denser laterally. Vertex with sculpture as on frons; pubescence brown-orange, forming central band from middle of eyes to anterior edge of prothorax; each side of latter area sparsely pubescent. Coronal suture distinct from clypeus to anterior edge of prothorax. Area behind eyes with wide band of brown-orange pubescence close to eyes, almost glabrous towards prothorax. Gena with brush-like band of pubescence (not dense) on distal half, almost glabrous towards eyes. Lower eye lobes 3.6 times genal length; distance between upper eye lobes equal to 0.5 times length of scape; distance between lower eye lobes, in frontal view, about equal to length of scape. Antenna 1.5 times elytral length; reaching elytral apex at base of antennomere X; antennomeres III–IV ventrally with thick, sparse setae throughout (denser on III); antennomeres V–VIII ventrally with single, thick setae near apex; base of antennomeres III– IV with narrow, whitish gray pubescent ring on base, followed by area with sparse pubescence of same color just after middle; antennomeres V–XI with dense, whitish gray pubescence on basal half or 2/3, dorsally projected towards apex; antennomere length ratios based on antennomere III: scape = 0.70; pedicel = 0.19; IV = 0.78; V = 0.50; VI = 0.47; VII = 0.45; VIII = 0.44; IX = 0.40; X = 0.39; XI = 0.39. Thorax: Prothorax about 1.5 times as wide as long; lateral tubercle large, rounded. Pronotum abundantly, coarsely punctate; basal half with slightly elevated, elongate tubercle; anterior half with distinct gibbosity on each side; anterior half depressed between gibbosities; pubescence brown-orange, forming 3 longitudinal bands: one more distinct and straight centrally; others at each side of gibbosities, moderately curved; area between bands of pubescence with small, moderately abundant, yellowish brown pubescent spots, mixed with whitish pubescence. Lateral sides of prothorax with sculpture as on pronotum; pubescence as in area between longitudinal bands of pronotum. Ventral side of thorax with brownorange pubescence laterally, whitish in wide central area. Scutellum with brown-orange setae centrally, mixed with whitish setae; glabrous laterally. Elytra: Surface irregularly covered with slight depressions and elevations, mainly on basal 2/3; abundantly, coarsely punctate; brown-orange pubescence forming several large spots ( Fig. 4 ), interspersed with sparse whitish pubescence; apex rounded. Abdomen: Urosternites moderately finely, abundantly punctate (coarser on I–II); with wide band of brown-orange pubescence laterally and sparse whitish setae centrally. Legs. Femur with sparse, whitish setae. Tibia mostly with whitish setae; ventral side with yellowish pubescence on distal half.

Type Material. Holotype male ( Figs. 4–6 ) ( MNKM) and four paratypes [male ( MZSP); one male, one female ( ACMT); one female ( FWSC)] from BOLIVIA, Santa Cruz: 4 km N Bermejo (“Refugio los Volcanes”; 1045–1350 m; 18°06′S / 63°36′W), 4–9.XII.2013, Wappes & Skillman col.

Dimensions (in mm). Male/female. Total length 8.00–8.50/8.50–9.50; prothoracic length at center 1.50–1.70/1.60–1.65; prothoracic anterior width 1.90– 1.95/1.95–2.10; prothoracic posterior width 1.95–2.05/ 2.00–2.25; maximum prothoracic width 2.20–2.25/ 2.30–2.55; humeral width 3.00–3.20/3.20–3.45; elytral length 6.00–6.30/6.50–6.80. The smallest dimensions are those of the holotype.

Etymology. The species is named after Frederick W. Skillman Jr., one of the collectors of the new species holotype.

Remarks. Euryestola skillmani is characterized by numerous large, brown-orange pubescent spots on the elytra. In Euryestola freyi Breuning, 1955 , Euryestola iquira Galileo and Martins, 1997 , and Euryestola antennalis Breuning, 1940 , the elytra have several little, yellowish white pubescent spots. It differs from Euryestola murupe Galileo and Martins, 1997 as follows: integument dark brown; dorsal pubescence mostly brown orange; antennomeres III–IV dark-brown. In E. murupe , the integument is reddish brown, the dorsal pubescence is mostly yellowish white, and the basal twothirds of antennomeres III–IV are yellowish.

Euryestola skillmani can be included in the alternative of couplet “5” in the key from Galileo and Martins (1997) (translated):

5′(2). Integument of antennomeres totally dark-

brown. Bolivia (Santa Cruz) .....................

.................. E. skillmani Martins, Galileo ,

and Santos-Silva, new species – Integument of some antennomeres bicolor

.................................................................5 5(5′). Elytra with oblique band with whitish

pubescence from humerus to suture

(slightly after middle); antennomeres IV

and VI brownish only close to apex. Brazil

(Minas Gerais)....... E. caraca Galileo and

Martins, 1997 – Anterior half of elytra without bands of

pubescence and distal third with area

covered with whitish pubescence; anten-

nomeres IV and VI with posterior half

brownish. Brazil (Pará) ...... E. morotinga

Galileo and Martins, 1997

Figures

Figs. 1–5. 1–3). Adetus mirabilis, holotype female: 1) Dorsal habitus; 2) Ventral habitus; 3) Lateral habitus.

Figs. 6–9. 6) Euryestola skillmani, holotype male, lateral habitus. 7–9) Esthlogena (Esthlogena) crassa, holotype female: 7) Dorsal habitus; 8) Ventral habitus; 9) Lateral habitus.