Coleoxestia bettellaorum, Galileo, Maria Helena M. & Santos-Silva, Antonio, 2016

Galileo, Maria Helena M. & Santos-Silva, Antonio, 2016, New taxa, new records and notes on Coleoxestia Aurivillius, 1912 (Coleoptera, Cerambycidae, Cerambycinae), Zootaxa 4136 (1) : -

Coleoxestia bettellaorum sp. nov.

( Figs. 21–25 )

Description. Male. Integument dark brown (almost black); head black; mouthparts brown, with apex of palpomeres yellowish-brown; antennomere III dark brown black on base, gradually reddish-brown toward apex, but with dark brown ring on apex; antennomere IV brown on base, gradually reddish-brown toward apex, but with brown ring on apex; antennomeres V–VI reddish-brown with apical dark-brown ring; antennomeres VII–X reddish-brown with small dark brown area at inner apex; antennomere XI reddish-brown; peduncle of femora dark brown on base, gradually reddish toward club; femoral club light reddish-brown with dark brown (almost back) apex; tibiae dark brown (almost black) basally, gradually reddish-brown toward apex; tarsi reddish-brown, darker on some areas.

Head. Frons with frontal plate finely, sparsely punctate laterally, longitudinally sulcate on middle, each puncture with minute seta; depressed laterally between frontal plate and clypeus; longitudinal depression on each side between frontal plate and antennal socket not well-delimited, finely, sparsely punctate, but with uneven surface, with minute seta emerging from each puncture. Longitudinal carina between antennal tubercles slightly elevated. Area between antennal tubercles deeply, longitudinally sulcate (this sulcus continuing to that on frontal plate), gradually wider from frons to upper eye lobes. Area between antennal tubercles and upper eye lobes slightly longitudinally elevated; finely, sparsely punctate; with minute seta emerging from each puncture, but interspersed with short, erect setae laterally. Area between upper eye lobes and prothoracic margin finely, sparsely punctate on area closer to eyes (but centrally smooth), distinctly coarser on area close to prothorax; with minute setae emerging from some punctures. Area behind upper eye lobes coarsely, moderately abundantly punctate; with some long setae close to eyes. Area behind lower eye lobes tumid close to eye; deeply, transversely sulcate close to tumid region; smooth on tumid area, coarsely, sparsely punctate between sulcus and prothorax; with some long, erect, setae close to eye. Submentum coarsely punctate interspersed with fine punctures on area closer to gula, depressed, smooth on area closer to mentum; with minute, short and long, sparse setae. Genae finely, sparsely punctate; with minute, sparse setae interspersed laterally with some long, erect setae. Antennal tubercles coarsely, smoothly, confluently punctate, but finely punctate toward apex; with minute seta emerging from nearly all punctures. Distance between upper eye lobes 0.35 times length of scape; distance between lower eye lobes in frontal view 0.60 times length of scape. Antennae 1.5 times elytral length, reaching elytral apex at about middle of antennomere XI. Scape coarsely uneven basally, gradually less so toward apex; finely, abundantly punctate on base, gradually sparser toward apex; with minute seta emerging from each puncture; with long, erect, sparse setae, mainly ventrally. Outer side of antennomere III slightly carinate on distal third; apex nodose. Antennomere IV with outer side almost entirely carinate, with apex nodose. Antennomeres V–X with outer side carinate; apex forming angle, more acute and distinct after antennomere VI. Antennomeres pubescent interspersed with long, erect, sparse setae (mainly on ventral side of antennomere III). Antennal formula based on antennomere III: scape = 0.58; pedicel = 0.13; IV = 0.49; V = 0.53; VI = 0.53; VII = 0.52; VIII = 0.50; IX = 0.47; X = 0.46; XI = 0.74.

Thorax. Prothorax as long as wide, distinctly wider at basal margin than anterior margin; moderately widened at middle, with rounded, irregular tubercles laterally. Sides of prothorax moderately scabrous, finely, sparsely punctate; with long, erect, sparse setae. Pronotum glabrous; with narrow, longitudinal, smooth area centrally at basal half, starting near basal transverse sulcus; remaining surface with transverse wrinkles and finely, sparsely punctate throughout (including on wrinkles). Prosternum finely, sparsely punctate; anterior half with transverse, slightly well-marked sulci between transverse central sulcus and anterior sulcus; basal half with long, erect, sparse setae; anterior half with minute, very sparse setae. Mesosternal process without tubercle. Ventral side of mesothorax pubescent, but distinctly sparser on mesosternum, mainly centrally. Metasternum finely, sparsely punctate throughout, interspersed with some coarser punctures; pubescent on narrow area close to metepisterna and meso- and metacoxal cavities; remaining surface with short, erect setae interspersed with long setae near middle. Scutellum finely, sparsely punctate laterally; with short, sparse setae laterally. Elytra. Shiny, finely, moderately abundantly punctate; glabrous, except for minute, sparse setae on distal quarter, and long, erect, sparse setae near apex; apex slightly obliquely truncate, bispinose (outer spine distinctly broader and longer than sutural spine). Legs. Inner and outer apices of profemora with rounded lobe; inner apex of meso- and metafemora with triangular, short lobe; outer apex of meso- and metafemora with rounded lobe.

Abdomen. Ventrites finely, sparsely punctate; with short, sparse setae, denser laterally, interspersed with long, sparse setae, distinctly more abundant laterally on ventrites III–V; apex of ventrite V truncate, slightly emarginated centrally.

Female. Antennae 1.2 times elytral length, reaching about distal fifth of elytra; apex of ventrite V rounded.

Variation. Integument more brownish; mouthparts reddish-brown; antennomere III brown basally; antennomere IV reddish-brown from base to near apex; dark brown area on apex of antennomeres VII–X absent; vertex almost entirely finely punctate, with coarse punctures only on narrow area close to prothorax; area behind lower eye lobes abundantly punctate between sulcus and prothorax; smooth area on basal half of pronotum absent; minute setae on distal quarter of elytra absent.

Dimensions in mm (holotype male/ paratype males/ paratype females). Total length, 20.8/18.8–22.3/24.4– 28.0; prothorax: length, 3.7/3.4–4.0/4.1–5.0; anterior width, 2.8/2.7–2.9/3.2–3.8; posterior width, 3.3/3.2–3.5/3.9– 4.7; largest width, 3.7/3.5–4.0/4.3–5.0; humeral width, 4.5/4.4–5.0/5.4–6.8; elytral length, 14.5/13.1–15.6/17.2– 19.9.

Type material. Holotype male from BOLIVIA, Santa Cruz: Buena Vista (Hotel Flora & Fauna), 14– 20.XI.2008, Galileo, Vanin & Martins col. ( MNKM). Paratypes same data as holotype: 6 males, 1 female ( MZSP). Paratypes with different data: BOLIVIA, Santa Cruz: 3.7 km SSE Buena Vista (Hotel Flora and Fauna; 430 m), 2 males, 10–29.XI.2003, B. K. Dozier col. ( FSCA); 2 females, 5–15.XI.2001, M. C. Thomas & B. K. Dozier col. ( FSCA); 1 male, 2 females, 15–22.XI.2001, B. K. Dozier col. ( FSCA); 4.6 km SSE Buena Vista (Hotel Flora and Fauna), 1 male, 23–26.X.2000, Wappes & Morris col. ( ACMT); 1 male, 1–8.XI.2012, Wappes ( ACMT); 1 female, 22–25.X.2007, Galileo & Martins col. ( MZSP); 4 km SSE Buena Vista (Hotel Flora & Fauna, 17º29’S / 63º39’W, 300–400 m), 1 male, 1–8.XI.2002, Wappes col. ( ACMT); 2 males, 17–20.X.2011, Wappes, & Skillman col. ( FSCA); 1 female, 25.XI.2013, Skillman & Wappes ( FWSC); 1 female, 13.XI.2015, Skillman, Wappes & Kuckartz col. ( FWSC); 5 km SSE Buena Vista (17º29’96”S / 63º39’13”W, 440 m, Hotel Flora & Fauna, Chiquitano Forest), 1 male, 15.X.2004, R. G. Clarke col. ( MNKM); Buena Vista (Hotel Flora & Fauna), 1 male, 14–17.XI.2003, Morris, Nearns & Wappes col. ( RFMC); Potrerillo del Guendá (17º40.26’S / 63º27.44’W), 1 male, 3 females, 5– 20.XI.2004, B. K. Dozier col. ( FSCA); 1 male, 1 female, 22.XI–12.XII.2005, B. K. Dozier col.( FSCA); 1 male, 1 female, 9–28.XI.2006, B. K. Dozier & J. Romero col. ( FSCA); 1 male, 30.IX–03.X.2007, Wappes & Morris col. ( ACMT); (17º40’S / 63º20’W), 1 male, 6–8.XII.2011, Wappes, Lingafelter, Morris & Woodley col. ( SWLC); 1 male, 6–8.XII.2011, Morris & Wappes col. ( RFMC); (40 km NW Santa Cruz de la Sierra), 1 male, 12–18.X.2014, Morris & Wappes col. ( RFMC); (Snake Farm; 17º40’S / 63º27’W; 370–400 m), 1 male, 16–22.X.2006, Wappes, Nearns & Eya col. ( BKEC); 1 female, 30.XI–3.XII.2012, Skillman & Wappes col. ( FWSC); 1 female, 15.22. XI.2011, Betella, Bonaso & Romero col. ( ACMT); Huaico (430 m, 17º40’S / 63º24’W), 1 male, Skillman & Wappes col. ( FWSC); Huaico (nr. Potrerillos, 430 m, 17º40’S / 63º26’W), 3 males, 1 female, 21.XI.2013, Wappes & Skillman col. ( ACMT); 15 km NE Terebinto (Xavier Chaco), 1 female, 01.XII.2012, Skillman & Wappes col. ( FWSC); 4 km N Bermejo (Refugio los Volcanes, 1045–1350 m, 18º06’S / 63º36’W), 1 male, 17–24.X.2014, Wappes & Morris col. ( ACMT); 2 males, 10.XII.2015, Skillman, Wappes & Kuckartz col. ( ENPC, PERC); 1 male, 12.XII.2015, Skillman, Wappes & Kuckartz col. ( FWSC).

Etymology. The new species is named after Paolo and Tiziano Bettella (MNKM) for their contribution to the knowledge of the Bolivian fauna.

Remarks. Coleoxestia bettellaorum sp. nov. is similar to C. julietae , but differs by the elytra always shiny and by the antennomere III longer (about 1.6 length of scape). In C. julietae the elytra usually is more or less shagreened, at least on basal half, and the antennomere III is shorter (about 1.5 times length of scape). Furthermore, specimens of C. julietae could have dark band along elytral suture, which is not present in the new species. It differs from C. anthracina Martins & Monné, 2005 , mainly by the scape longer and by the pronotal wrinkles coarser. In C. anthracina the scape is shorter and the pronotal wrinkles are finer. Coleoxestia bettellaorum sp. nov. differs from C. tupunhuna Martins & Monné, 2005 , mainly by the mesosternal process without tubercle (present in C. tupunhuna ), and by the body proportionally wider (narrower in C. tupunhuna ). It also differs from C. polita sensu Martins & Monné (2005) by the femora distinctly clavate (not so in C. polita ). We are not sure if C. polita sensu Martins & Monné (2005) really corresponds to this species.

Coleoxestia bettellaorum sp. nov. can be included in the alternative of couplet “13”, from Martins & Monné (2005) to South American species of the genus, (translated, modified):

13(12). Larger dimensions (length, over than 30mm); prothorax and elytra reddish-brown................................ 13’ - Small dimensions (length from 19 to 21mm); prothorax and elytra black........................................ 14 13’(13) Elytra shorter than 4 times pronotal length. Bolivia........................................ C. bettellaorum sp. nov. - Elytra longer than 4 times pronotal length. Nicaragua, Panama, Colombia, Venezuela......... C. sanguinipes (Bates, 1884)

Since Eya & Chemsak (2005b) recorded the length of C. sanguinipes as from “ 26–34 mm ” in male, and “ 30– 41 mm ” in female, the alternative of couples “13” from Martins & Monné (2005) becomes problematic and not useful. Furthermore, we have doubt if the specimen mentioned by Martins & Monné (2005) really belongs to this species.

Figures

FIGURES 21 – 25. Coleoxestia bettellaorum sp. nov.: 21, holotype male, dorsal habitus; 22, holotype male, ventral habitus; 23, holotype male, lateral habitus; 24, holotype male, head; 25, paratype female, dorsal habitus.