Oreodera advena Martins & Galileo, 2005

Santos-Silva, Antonio, Nascimento, Francisco Eriberto De L. & Júnior, José Osvaldo Silva, 2020, Description of two new Acanthoderini, and description of the male of Oreodera advena Martins & Galileo (Coleoptera, Cerambycidae, Lamiinae), Zootaxa 4790 (3), pp. 540-550 : 544-547

Oreodera advena Martins & Galileo, 2005

( Figs. 9–13, 15 )

Oreodera advena Martins & Galileo, 2005: 14 ; Monné, 2005: 185 (cat.); Monné & Hovore, 2006: 207 (checklist); Santos-Silva & Botero, 2016: 426 (key); Monné, 2020: 293 (cat.); Bezark, 2020: 240 (checklist).

Description. Male ( Figs. 9–13 ). Integument mostly dark brown, black on some areas; mouthparts reddish brown except black or dark brown palpi (apex of last palpomeres yellowish); central area of antennomere IV, and anterior area of V–XI slightly dark reddish brown; abdominal ventrites I–III dark brown on basal third, gradually reddish brown toward near apex, which is somewhat orange, especially on II–III; abdominal ventrite IV brown on basal third, gradually light reddish brown toward near apex, which is light yellowish-brown; abdominal ventrite V mostly light reddish brown, with sides slightly brownish.

Head. Frons minutely, abundantly punctate; with yellowish-white pubescence on wide central area (whiter depending on light intensity), light yellowish brown close to eyes, yellowish brown on center of superior area, gradually becoming darker toward area between antennal tubercles; with long, erect, sparse dark setae close to eyes. Area between antennal tubercles with brown pubescence toward frons, with both, yellowish-brown and yellowish-white short, decumbent setae interspersed; area toward upper eye lobes with yellowish-white pubescence. Area between upper eye lobes with golden-yellow pubescence. Remaining surface of vertex and area behind upper eye lobes with arched brownish pubescent band connecting eyes, with narrow golden-yellow pubescent band close to eyes, and yellowish pubescence on remaining surface (slightly whiter depending on light intensity), obscuring integument behind eyes. Area behind lower eye lobes with somewhat bristly yellowish pubescence partially obscuring integument on wide area close to eye, glabrous close to prothorax. Antennal tubercles with yellowish-white pubescence anteriorly, gradually brown, with both, yellowish-brown and yellowish-white short, decumbent setae interspersed toward dorsal surface, yellowish brown dorsally, and gradually yellowish-white toward posterior area. Genae minutely, transversely striate toward ventral surface, minutely, densely punctate toward frons; with yellowish pubescence close to eye, gradually yellowish white, sparser toward glabrous apex. Wide central of postclypeus with sculpturing and pubescence as on inferior area of frons, glabrous laterally; with long, erect, sparse dark setae on pubescent area. Labrum with yellowish-brown pubescence not obscuring integument, sparser toward anterior margin, with long, erect, thick dark setae interspersed on central area, long, erect yellowish setae on sides of anterior half, and fringe of short golden setae at anterior margin. Gulamentum smooth, glabrous posteriorly, slightly depressed, opaque, microscopically rugose, with a few short yellowish-white setae anteriorly. Distance between upper eye lobes 0.29 times length of scape (0.18 times distance between outer margins of eyes); in frontal view, distance between lower eye lobes 0.78 times length of scape (0.47 times distance between outer margins of eyes). Antennae 2.0 times ely- tral length, reaching elytral apex at middle of antennomere VII. Scape, pedicel and antennomeres III–X with long, erect, sparse yellowish setae on inner side of ventral surface, most of them brownish basally (gradually shorter, sparser toward X); scape with yellowish-brown pubescence dorsally, yellowish-white pubescence interspersed, and sparser yellowish-white pubescence toward ventral surface; antennomeres III–V with two yellowish-white pubescent bands, not reaching ventral surface, one narrow basally, another centrally (this last one gradually shorter toward V); antennomeres VI–XI with wide yellowish-white pubescent ring; remaining surface of antennomeres with dark pubescence. Antennal formula (ratio) based on length of antennomere III: scape = 0.48; pedicel = 0.14; IV = 0.75; V = 0.55; VI = 0.53; VII = 0.53; VIII = 0.50; IX = 0.49; X = 0.43; XI = 0.39.

Thorax. Lateral tubercles large, with blunt apex. Pronotum with five tubercles: one large, elevated, with round- ed apex on each side of anterocentral half; one less elevated than the former placed on each side of posterior half, rounded on apex; another elongated, slightly elevated, placed central on posterior half. Pronotal surface coarsely, somewhat sparsely punctate anteriorly and posteriorly, and finer, sparser punctate among tubercles, except on smooth tubercles; pubescence mostly yellowish-white (whiter depending on light intensity), not obscuring integument, with areas with yellowish-brown pubescence interspersed, except glabrous top of anterolateral tubercles and posterocentral tubercle; with a few long, erect, dark setae on posterior half. Sides of prothorax coarsely punctate posteriorly, with finer, sparser punctures anteriorly, and nearly smooth centrally; with light yellowish-brown pubescence not obscuring integument, distinctly pale yellow posteriorly close to procoxal cavity. Prosternum and central area of prosternal process with light yellowish-brown pubescence not obscuring integument; sides of prosternal process with yellowish-white pubescence; narrowest area of prosternal process 0.6 times width of procoxal cavity. Apex of mesoventral process 1.45 times width of mesocoxal cavity. Mesoventrite with sparse yellowish-white pubescence on wide central area, distinctly denser laterally. Mesanepisternum and mesepimeron with dense yellowish-white pubescence, with pale yellow pubescence interspersed. Metanepisternum with light yellowish-brown pubescence, gradually darker, denser toward apex. Metaventrite with yellowish-white pubescence not obscuring integument close to metanepisternum and on wide central area, pale yellow close to mesocoxal cavities, distinctly denser pale yellow laterally close to metacoxal cavities (this pubescence gradually whiter toward inner side). Scutellum semicircular, with yellowish-white pubescence not obscuring integument. Elytra. Humeri laterally projected; surface coarsely, abundantly punctate (finer, sparser after middle); apex slightly obliquely truncate, slightly concave between outer and sutural angles; with slightly arched, elevated transverse crest on basal sixth, dorsally slightly sinuous; anterior area, between base and crest, with grayish-white pubescence, denser toward crest, with tufts of yellow pubescence close to crest; with tuft of short black pubescence on outer side of crest; posterior area of crest narrowly, almost glabrous; area between crest and just before middle mostly with yellowish-brown pubescence, gradually more yellowish-white centrally toward posterior of this region, darker on inclined area, except black pubescent macula on anterior inclined third; with dense, irregular white pubescent macula about middle, not reaching suture, reaching epipleural margin (sparser close to epipleural margin); with V-shaped, narrow white pubescent band laterally after large white pubescent macula (both internally connected); posterior quarter with mostly white pubescence partially obscuring integument; area between white pubescent macula and posterior quarter mostly with yellowish-brown pubescence, except white pubescence close to suture, and three longitudinal dark brown pubescent bands, central one longest. Legs. Dorsal and lateral surfaces of femora with dense yellowish-white pubescence (whiter depending on light intensity), with yellowish-brown pubescent areas interspersed; ventral surface with pubescence of same color, shorter, sparser, especially on profemora. Tibiae with two yellowish-white pubescent rings, with yellowish pubescence interspersed, one basally, another centrally, this last one distinctly wider on metatibiae; remaining surface with dark pubescence, bristly dark brown on ventral third of protibiae, bristly reddish brown on ventral half of meso- and metatibiae. Protarsomere I two times length of II.

Abdomen. Ventrites with grayish-white pubescence not obscuring integument, with long, erect, sparse setae of same color interspersed laterally. Apex of ventrite V truncate.

Dimensions in mm (male). Total length, 9.15; prothoracic length, 1.50; anterior prothoracic width, 2.25; posterior prothoracic width, 2.30; maximum prothoracic width (between apex of tubercles), 2.60; humeral width, 3.75; elytral length, 6.85. Dimensions of the holotype female ( Martins & Galileo 2005): Total length, 11.20; prothoracic length, 1.80; maximum prothoracic width (between apex of tubercles), 3.20; humeral width, 4.80; elytral length, 8.50.

Material examined. COLOMBIA, Huila (New department record): Palestina , 1º40’25” N / 76º13’29”W, 2,200 m, 1 male, 16-18.IV.2018, V. Sinyaev col. ( MZSP) .

Remarks. Oreodera advena was described based on a single female from Colombia (Boyacá). Monné & Hovore (2006) recorded the species from Ecuador. The male of O. advena differs from the female by the longer antennae, reaching elytral apex at middle of antennomere VII (apex of VIII in female).

Galileo et al. (2017) described O. clarkei based on a series of specimens, males and females, from Bolivia, but did not compare this species with O. advena , which is very similar in general appearance. Males of O. advena ( Fig. 9 ) differ from those of O. clarkei ( Fig. 16 ) by the shorter antennae, two times elytral length, reaching elytral apex at middle of antennomere VII (about 2.5 times elytral length, reaching elytral apex at distal third of antennomere VI in O. clarkei ), but especially by the basal crest not strongly sinuous dorsally, and the two more elevated area on top of the crest not projected forward as carina ( Fig. 13 ) (basal crest strongly sinuous dorsally, and each more elevated area on top distinctly projected forward as carina in O. clarkei ( Fig. 14 )).

Figures

FIGURES 9–16. 9–13) Oreodera advena, male: 9) Dorsal habitus; 10) Ventral habitus; 11) Lateral habitus; 12) Head, frontal view; 13) Elytral basal crest. 14) Oreodera clarkei, paratype male, elytral basal crest. 15) O. advena, holotype female, dorsal habitus. 16) O. clarkei, holotype male, dorsal habitus.