Cirrhicera bankoi, Santos-Silva & Botero & Tirant, 2018

Santos-Silva, Antonio, Botero, Juan Pablo & Tirant, Stéphane Le, 2018, A new genus, four new species and taxonomic and geographic notes in Mexican Cerambycidae, Zootaxa 4420 (2), pp. 189-210 : 205-208

Cirrhicera bankoi , sp. nov.

( Figs. 37–40 )

Description. Male. Integument black except dark reddish brown areas of mouthparts.

Head. Dorsal surface densely micropunctate. Frons coarsely, moderately abundantly punctate; with yellowish white pubescence (white depending on angle of light source) obscuring integument, except large, subelliptical area with sparse pubescence on each side; with sparse, erect, moderately short dark setae (slightly more abundant toward antennal tubercles). Area between antennal tubercles and prothoracic margin coarsely, moderately abundantly punctate, except nearly smooth, longitudinal central area; with yellowish brown pubescence obscuring integument (denser toward prothorax), except glabrous smooth area; with sparse, erect, moderately short dark setae. Area behind upper eye lobes coarsely, moderately abundantly punctate; with yellowish brown pubescence nearly obscuring integument, centrally projected toward area behind lower eye lobe. Area behind lower eye lobes coarsely, moderately abundantly punctate; with pubescent band close to eye, yellowish brown toward upper eye lobes, yellowish white toward gena; remaining surface nearly glabrous, except band with sparse pubescence close to prothorax. Genae coarsely, moderately sparsely punctate except smooth apex; with yellowish white pubescent band close to lower eye lobe, another longitudinal close to clypeus and frons, very sparsely pubescent on remaining surface, except on glabrous apex. Antennal tubercles only micropunctate; with yellowish white pubescence on base (slightly more yellowish toward upper eye lobes), glabrous on remaining surface. Median groove distinct from clypeus to prothoracic margin. Gulamentum smooth, glabrous except a few short yellowish white setae close to anterior elevated area. Mandibles with yellowish white pubescence on basal half of outer side, glabrous on remaining surface. Postclypeus with transverse, glabrous band close to frons, with dense yellowish white pubescence close to anteclypeus (more white depending on angle of light source). Labrum coplanar with anteclypeus at basal third, inclined at distal 2/3; basal third nearly glabrous; base of inclined area with transverse yellowish white pubescent band, interspersed with long, erect golden setae; remaining surface of inclined area nearly glabrous. Distance between upper eye lobes 0.26 times length of scape (2.0 times width of one upper eye lobe); in frontal view, distance between lower eye lobes 0.65 times length of scape. Antennae 1.8 times elytral length, reaching elytral apex at distal quarter of antennomere VII. Scape nearly glabrous dorsally and on outer side, with yellowish white pubescence ventrally and on inner side, interspersed with yellowish brown pubescence; with long, erect, sparse golden setae on pubescent area, interspersed with a few dark setae. Pedicel with yellowish white pubescent ring on basal half (more white depending on angle of light source); with long, erect dark setae ventrally. Antennomeres III–IV with yellowish white pubescence ventrally and on inner side, nearly glabrous on remaining surface; with long, erect, moderately sparse dark setae ventrally. Antennomeres V–VI with sparse yellowish white pubescence dorsally, with dense fringe of long, erect black setae ventrally and part on inner side. Antennomeres VI–XI with sparse yellowish white pubescence. Antennal formula (ratio) based on length of antennomere III: scape = 0.62; pedicel = 0.11; IV = 0.67; V = 0.32; VI = 0.29; VII = 0.29; VIII = 0.26; IX = 0.24; X = 0.22; XI = 0.27.

Thorax. Prothorax slightly wider than long, with basal constriction. Pronotum with distinct piriform gibbosity centrally, from basal fifth to shortly after middle; coarsely, moderately abundantly punctate except on smooth central gibbosity; with yellowish brown pubescence not obscuring integument (partially lost in some areas in the holotype, not so in the paratype) except glabrous central longitudinal band, from basal fifth to apex; with long, sparse yellowish setae throughout. Sides of prothorax coarsely, moderately abundantly punctate; with yellowish brown pubescence not obscuring integument on basal area (denser toward pronotum and close to procoxal cavity) nearly glabrous on remaining surface (denser on entire area close to pronotum in the paratype). Prosternum and prosternal process with yellowish brown pubescence nearly obscuring integument. Mesoventrite with yellowish white pubescence not obscuring integument centrally, yellowish brown, denser laterally. Mesanepisternum and mesepimeron coarsely punctate (more abundant in the former); with dense yellowish brown pubescence on some areas (apparently, at least partially lost); mesoventral process with yellowish white pubescence not obscuring integument. Metanepisternum coarsely, moderately sparsely punctate; glabrous except for narrow basal and distal area with yellowish brown pubescence. Metaventrite coarsely, moderately abundantly punctate laterally; with yellowish brown pubescence interspersed with yellowish white pubescence basally (except glabrous area close to metanepisterna), transverse distal area close to metacoxae, and longitudinal central area (shorter and sparser on this latter). Scutellum with yellowish brown pubescence not obscuring integument except glabrous distal area (basally obscuring integument in the paratype). Elytra. Sides gradually narrowed from base to apex; humerus projected; humeral carina distinct from humerus to distal third, but gradually less so toward its distal area; coarsely, abundantly, aligned punctate on basal 2/3, punctures gradually finer toward distal third; distal third smooth; apex truncate, outer angle spiniform, sutural angle rounded; with dense yellowish brown pubescence basally on each side of scutellum, but with glabrous humerus; pubescence becoming pale yellow, somewhat sparser, forming wide band on side of sutural margin, not reaching distal third, then distinctly narrower and sparser along suture; remaining surface nearly glabrous except sides of distal third and apex with sparse pubescence. Legs. Femora with moderately dense yellowish white pubescence dorsally and ventrally, glabrous laterally. Protibiae with dense golden pubescence ventrally on distal half; meso- and metatibiae with bristly, abundantly golden pubescence on distal half.

Abdomen. Ventrites I–IV with transverse yellowish white distal pubescent band; ventrite I with dense yellowish white pubescence close to metacoxal cavities and laterally, sparser centrally, interspersed with a few long, erect yellowish setae; ventrites II–IV with narrow yellowish white pubescent band laterally, near glabrous centrally except a few long, erect yellowish white setae; ventrite V with yellowish white pubescence, denser on distal half. In paratype, abdominal pubescence is distinctly denser and yellower throughout. Apex of ventrite V distinctly emarginate centrally.

Dimensions in mm (holotype male– paratype male). Total length, 12.90–11.25; prothoracic length, 2.45– 2.20; basal prothoracic width, 2.60–2.35; distal prothoracic width, 2.45–2.25; widest prothoracic width, 2.65–2.45; humeral width, 3.90–3.45; elytral length, 8.75–7.90.

Type material. Holotype ( MZSP) and paratype ( IMQC) males from MEXICO, Chiapas: El Triunfo (1650 m), 10–12.VII.2009, D. Curoe col.

Etymology. This species is dedicated to our collaborator Alexandre Banko.

Remarks. The general pubescence in the holotype and paratype is very similar in the concentration and distribution dorsally and ventrally, except the denser abdominal pubescence in the paratype. However, we do not know which the true pubescence pattern in the species is, because, apparently, at least part of the pubescence is lost in the two types.

Based on the pubescence present in the holotype and paratype, and black color of the legs, Cirrhicera bankoi does not match with any other known species of the genus. The slightly more similar species it would be C. cinereola Bates, 1881 , but besides the distinctly denser general pubescence, the upper eye lobes are distinctly narrower and distant each other (see photograph of the holotype at Bezark 2017).

Cirrhicera bankoi can be included in the alternative of couplet “2” from Chemsak (1972) (modified):

2(1). Elytra with pubescent fasciae covering most of surface and without black spots, or basally and medially transverse........ 3

- Elytra with pubescent fasciae covering most of surface and with black spots, or with large areas without pubescence...... 2’

2’(2). Distance between upper eye lobes wider than three times width of one upper eye lobe; elytra densely pubescent throughout with two black spots. Mexico (Chiapas), Guatemala, Honduras, El Salvador, Costa Rica........... C. cinereola Bates, 1881

- Distance between upper eye lobes equal to two times width of one upper eye lobe; elytra without dense pubescence throughout and without black spots. Mexico (Chiapas)................................................... C. bankoi sp. nov.

Figures

FIGURES 32–40. 32–36, Acanthoderes (Acanthoderes) barrerai, 32–34, holotype male, 32, dorsal habitus, 33, ventral habitus, 34, lateral habitus, 35–36, female, 35, head, frontal view, 36, dorsal habitus; 37–40, Cirrhicera bankoi sp. nov., holotype male, 37, head, frontal view, 38, dorsal habitus, 39, ventral habitus, 40, lateral habitus. Photographs 32–36 by Enrique Ramírez García (UNAM).