Stizocera boliviensis, Galileo, Maria Helena M. & Santos-Silva, Antonio, 2016

Galileo, Maria Helena M. & Santos-Silva, Antonio, 2016, Five new species and a new country record in American Cerambycidae (Coleoptera), Zootaxa 4196 (1), pp. 129-143 : 130-131

Elaphidiini

Stizocera boliviensis sp. nov. ( Figs. 1–6 )

Description. Male. Integument light reddish-brown, darker on some areas of ventral side, mainly on sides of mesothorax, metepisterna and most of metasternum; pedicel dark-brown; most of basal antennomeres dark-brown, gradually mostly reddish-brown toward distal antennomeres; each elytron with a large, sub-elliptical, pale yellow macula, not reaching suture, laterally not well-delimited, from about apex of basal sixth to after middle; elytral suture reddish-brown; elytral apex black on narrow region, extending laterally on distal sixth; prosternum with narrow brown band surrounding procoxal cavities, extending toward sides of prosternal process; mesosternum with narrow brown band surrounding mesocoxal cavities, extending toward margins of mesosternal process; central projection of metasternum toward mesosternal process with black, narrow band on margin; central projection of abdominal ventrite with black, narrow band on margin; base of femoral peduncles dark reddish-brown; apex of femoral club slight darker; basal 3/4 of tibiae blackish, gradually reddish-brown on distal third; tarsi dark-brown.

Head. Frons smooth, glabrous except for some small setae laterally; with deep depression laterally between clypeus and antennal tubercle. Area between antennal tubercles finely, sparsely punctate toward frons, coarsely, confluently punctate toward upper eye lobes (coarser punctures elongated); with short, decumbent, sparse setae. Remaining surface of vertex with fine, sparse setae between upper eye lobes, gradually smooth toward prothorax; with short, decumbent, sparse setae, laterally interspersed with some long, erect setae. Antennal tubercles finely, sparsely punctate, interspersed with some coarser punctures; with short, decumbent, sparse setae. Area behind upper eye lobes finely, sparsely punctate toward eye, striate-punctate close to prothorax; with short, sparse setae interspersed with some long, erect setae close to eye. Area behind lower eye lobes smooth close to eye, striatepunctate toward prothorax; glabrous except for long, erect, sparse setae near ventral side of head. Sides of gula near submentum striate interspersed with some punctures. Submentum transversely striate; with short, sparse, subdecumbent setae interspersed with long, erect setae. Genae with short, decumbent, sparse setae toward eye, glabrous toward apex. Postclypeus glabrous centrally, laterally with short, decumbent setae and one long, erect seta. Mandibles striate punctate on basal two-thirds; with short, sparse, decumbent setae interspersed with some long, erect setae. Distance between upper eye lobes 0.60 times length of scape; distance between lower eye lobes in frontal view 0.95 times length of scape. Antennae 2.3 times elytral length, reaching elytral apex at basal fourth of antennomere VIII. Scape finely, moderately abundantly punctate; with short, decumbent setae interspersed with long, erect setae. Antennomeres with long, erect setae, mainly on inner side of ventral side, gradually sparser toward distal antennomeres. Antennomeres III–VI with long spine at apex of inner side; length of spine compared with distal width of antennomere: III, 0.77; IV, 0.77; V, 0.63; VI, 0.54. Antennal formula (ratio) based on antennomere III (spines not included): scape = 0.68; pedicel = 0.20; IV = 0.80; V = 0.96; VI = 1.01; VII = 1.01; VIII = 0.98; IX = 0.94; X = 0.87; XI = 1.14.

Thorax. Prothorax as long as wide (including lateral tubercles); lateral tubercles large, conical, placed at middle; sides coarsely, abundantly punctate below tubercle, except for smooth, wide, transverse band close to prosternum, connected to the smooth areas on anterior and posterior sides of tubercle; with long, erect, sparse setae, mainly on punctate region. Pronotum with gibbosities well-marked; coarsely, sparsely punctate, except for sides of anterior third with abundant punctures; pubescent on sides of posterior constriction, with short, sparse setae on center of basal constriction; remaining surface with long, erect, sparse setae. Prosternum coarsely, abundantly punctate on basal half, finely, transversely striate on distal half; sides of basal half pubescent, center with short, sparse, decumbent setae, both interspersed with long, erect, sparse setae; distal half with short, sparse setae interspersed with long, erect, sparse setae. Prosternal process glabrous on base, pubescent on remaining surface. Mesosternum with short, decumbent, sparse setae centrally, pubescent laterally. Mesosternal process almost smooth, glabrous basally, coarsely, abundantly punctate, sparsely pubescent on remaining surface. Mesepisternum and mesepimeron pubescent. Metepisternum pubescent. Metasternum almost smooth laterally, coarsely, sparsely punctate centrally; sides and transverse area close to metacoxal cavities pubescent; remaining surface with short, sparse, decumbent setae interspersed with long, erect, sparse setae. Scutellum pubescent. Elytra. Finely, sparsely punctate on basal third, gradually more sparse toward apex; with coarse, slightly tuberculate, sparse punctures from which emerges long, erect seta (these punctures more abundant, irregularly distributed on basal quarter, sparser, aligned along suture and dorsal side); with long, sparse, erect setae along epipleura (shorter, toward apex); apex with long spine at outer angle, with short projection on sutural angle. Legs. Apices of profemora with rounded lobes; apices of meso- and metafemora with spine; femora with short, decumbent, sparse setae interspersed with long, erect, sparse setae. Metatarsomere I as long as II–III together.

Abdomen. Ventrites finely, sparsely punctate; with short, sparse setae interspersed with long, erect, sparse setae; ventrite V about as long as IV, truncate at apex.

Female. Differs from male mainly by the antennae shorter (1.7 times elytral length, reaching elytral apex at base of antennomere X), and by the ventrite V distinctly longer than IV, with apex slightly rounded.

Variation. Most of metathorax and abdomen dark-brown; tibiae reddish-brown only near apex; presence of erect setae on center of dorsal surface of elytra.

Dimensions (mm). Holotype male/ paratype females. Total length (including mandibles), 19.45/12.95–14.50; prothoracic length, 3.95/2.40–2.85; anterior prothoracic width, 3.15/2.00–2.40; posterior prothoracic width, 3.15/ 2.00–2.40; largest prothoracic width (between apices of lateral tubercles), 4.00/2.45–2.90; humeral width, 4.50/ 2.85–3.30; elytral length, 13.20/8.30–9.70.

Type material. Holotype male from BOLIVIA, Santa Cruz: 4 km N Bermejo ( Refugio Los Volcanes ; 18º06’S / 63º36’W; 1045–1350 m), 11–17.XII.2012, Wappes & Skillman col. ( MNKM) . Paratypes ( All from BOLIVIA, Santa Cruz)— 2 females, same data as holotype except for: 5–7.XII.2015, Wappes, Kuckartz & Skillman col. ( MZSP) ; 10–12.XII.2015, Wappes, Kuckartz & Skillman col. (ACMT); 1 female, same data as holotype except for: 4–9.XII.2013, Wappes & Skillman ( ACMT) ; 1 female, same data as holotype except for: 13.XII.2012, Skillman & Wappes ( FWSC) ; 1 male, same data as holotype except for: (1000–1200 m), 15.XII.2012, Skillman & Wappes col. ( FWSC) ; 1 male, same data as holotype except for: (1000–1200 m), 16.XII.2012, Skillman & Wappes col. ( FWSC) ; Huaico (Across Guenda fm Potrerillo , 270’; 17°40’35”S 63°26’59”W), 1 male, 1 female, 1.XII.2012, J. E. Wappes col. ( ACMT) ; Huaico (near Potrerillo ), 1 male, I. XII.2012, Skillman & Bonaso col. ( FWSC) ; Potrerillo del Guenda ( Snake Farm , 350–400 m; 17°40S / 63°27’W), 1 male, 10–18.XII.2011, Bettella, Bonaso & Romero col. ( FSCA) .

Etymology. The epithet is a Latin adjective referring to the native country ( Bolivia).

Remarks. Stizocera boliviensis sp. nov. differs from S. phtisica Gounelle, 1909 as follows: antennomere VI with distinct spine at apex ( Fig. 6 ); pedicel and basal antennomeres dark, distinctly contrasting with the color of the scape ( Fig. 4 ); pronotum with pubescence only on sides of basal constriction ( Fig. 4 ); basal 3/4 of tibiae blackish ( Figs. 1–3 ); tarsi dark ( Figs. 1–5 ). In S. phtisica the spine at apex of antennomere VI is tiny or absent ( Fig. 9 ), the color of the pedicel and basal antennomeres is not contrasting with that of the scape ( Fig. 7 ), the pronotum has distinct pubescence throughout (absent on some irregular areas) ( Fig. 7 ), and the tibiae and tarsi are entirely light ( Fig. 8 ). It differs from S. poeyi (Guérin-Méneville, 1838) ( Fig. 10 ) mainly by the elytral pale yellow macula less distinctly delimited and not surrounded by dark area (well delimited and surrounded by dark area in S. poeyi ), by the femora less clavate (more distinctly clavate in S. poeyi ), by the femoral peduncle light (darker, mainly on meso- and metafemora in S. poeyi ), and by the tibiae bicolorous (entirely dark in S. poeyi ).

Stizocera boliviensis sp. nov. can be included in the alternative of couplet “3” from Martins (2005) (translated; modified):

3(2). Antennae and tibiae orangish-yellow..................................................................... 4 - Pedicel and basal antennomeres contrasting with color of the scape............................................. 3’ 3’(3). Elytral macula distinctly surrounded by dark band. Cuba, Costa Rica, Panama, Colombia, Venezuela, French Guiana, Brazil (Acre, Amazonas, Rondônia), Bolivia (Santa Cruz)................................ S. poeyi (Guérin-Méneville, 1838) - Elytral macula not surrounded by dark band. Bolivia......................................... S. boliviensis sp. nov.

Figures

FIGURES 1 – 10. 1 – 6, Stizocera boliviensis sp. nov., holotype male: 1, dorsal habitus; 2, ventral habitus; 3, lateral habitus; 4, head, pronotum and basal antennomeres; 5, head, frontal view; 6, apex of antennomere VI. 7 – 9, Stizocera phtisica, male: 7, head, pronotum and basal antennomeres; 8, legs, lateral view; 9, apex of antennomere VI. 10, Stizocera poeyi, male, dorsal habitus.