Tropidion nancyae, Wappes & Santos-Silva, 2016

Wappes, James E. & Santos-Silva, Antonio, 2016, New species of Neocompsa and Tropidion from Bolivia (Coleoptera: Cerambycidae: Cerambycinae: Neoibidionini), Insecta Mundi 2016 (488), pp. 1-7 : 3-5

Tropidion nancyae sp. nov.

( Fig. 6–12 )

Description of Male Holotype. Integument dark brown; head dorsally black, mandibles and nearly distal one-half of femora black; mouthparts reddish brown; head mostly reddish brown ventrally; base of scape and pedicel dark brown, remaining surface orangish brown; antennomeres III–XI orangish brown, slightly lighter toward antennomere XI; elytra light orangish brown except dark brown pattern on basal one-half creating large elliptical orangish-brown macula; elytral suture dark brown with small apical area of elytra black; most of profemora peduncle dark brown, with remaining surface orangish brown; peduncle of meso- and metafemora mostly reddish brown, with remaining surface of femora orangish brown; tibiae with small dark brown area on base, orangish brown on remaining surface; tarsi orangish brown; abdominal ventrites reddish brown. Pubescence and setae yellowish white (more yellowish or more whitish depending on angle of light source).

Head. Frons close to clypeus finely, transversely striate and glabrous except for smooth central area, finely, confluently punctate near antennal tubercles; punctate region with pubescence not obscuring integument. Area between antennal tubercles and upper eye lobes striate-punctate (smooth between upper eye lobes centrally), with pubescence sparser than on frons (glabrous centrally); remaining surface of vertex finely, densely punctate with sparse pubescence laterally (with long, erect setae interspersed close to eyes), smooth, glabrous centrally. Antennal tubercles finely, sparsely punctate, with sparse pubescence. Tempora finely, densely punctate behind upper eye lobes, almost smooth from this region to about middle of lower eye lobes, finely, abundantly punctate close to prothoracic margin, finely, smoothly punctate on area close to distal one-half of lower eye lobes; with long, erect, sparse setae close to lower eye lobes. Coronal suture distinct from clypeus to between upper eye lobes and prothoracic margin. Genae finely, sparsely punctate, with pubescence denser close to eye. Gula smooth, glabrous. Submentum finely, transversely vermiculate-punctate; with sparse pubescence interspersed with long, erect setae. Postclypeus with sparse pubescence and only long, erect setae laterally. Distance between upper eye lobes 0.35 times length of scape; distance between lower eye lobes in frontal view 0.65 times length of scape. Antennae 3.1 times elytral length, reaching elytral apex at distal one-fifth of antennomere VI; scape, pedicel and antennomeres III–VI with long setae ventrally close to inner side (gradually sparser from III to VI); antennomeres VII–X with a few long, erect setae at apex (shorter from VII to X); antennal formula (ratio) based on antennomere III: scape = 0.52; pedicel = 0.19; IV = 1.00; V = 1.12; VI = 1.14; VII = 1.07; VIII = 1.07; IX = 0.93; X = 0.90; XI = 1.35.

Thorax. Prothorax 1.4 times longer than wide. Pronotum finely, sparsely punctate, slightly more dense in basal one-fifth; with five tubercles, largest placed at center of longitudinal axis of basal one-half (near middle of pronotum), one on each side at distal one-third, another on each side at basal one-third; short, sparse setae (denser close to basal margin) intermixed with long, erect setae. Sides of prothorax with sculpture and setae as on pronotum, except area closer to anterior margin, which is almost glabrous and without distinct punctures. Prosternum finely, sparsely punctate close to procoxal cavities, transversely striate toward anterior margin (mainly centrally); with U-shaped band of pubescence in basal one-half; remaining surface with short, sparse setae. Prosternal process pubescent. Mesosternum and mesosternal process with sparse pubescence. Mesepimera, mesepisterna, metepisterna and metasternum pubescent (pubescence sparser on center of metasternum). Scutellum densely pubescent.

Elytra. Not translucent, coarsely, abundantly punctate; nearly all punctures with minute setae; with long, erect setae aligned in 5 rows; apex obliquely truncate, widely, slightly emarginate between outer and sutural angles; outer angle slightly projected.

Legs. Femora with sparse pubescence interspersed with long, erect setae. Metatarsomere I 0.8 of II–III combined.

Abdomen. Ventrites pubescent laterally, gradually distinctly sparser toward center, intermixed with long, erect, sparse setae; length of ventrite V 3.0 times width of its base; apex of ventrite V truncate.

Female Paratypes. Antennae 2.2 times elytral length, reaching elytral apex at basal one-fourth of antennomere VIII. Length of ventrite V 1.5 times width of its base; apex of ventrite V slightly rounded.

Variation. Elliptical macula on elytra projected toward humerus and outer margin; elytral suture reddish brown; elytral apex orangish brown or darkened only on lateral spine; peduncle of profemora partially orangish brown; femora orangish brown except for black apical region; abdominal ventrites brown; elytra partially translucent on sides of distal half.

Dimensions in mm (holotype male/ paratype females). Total length 9.20/8.20–9.30; prothorax: length 2.00/1.70–1.95; anterior width 1.30/1.15–1.25; posterior width 1.35/1.15–1.30; humeral width 1.95/1.70–1.90; elytral length 5.95/5.30–6.05.

Type Material. Holotype male ( MNKM), 1 paratype male ( ACMT) and 4 paratype females (2 ACMT, 1 FWSC, 1 MZSP) from BOLIVIA, Santa Cruz: 20 km N Camiri (Road to Eyti ; 1250 m; 6-8 km E Hwy 9; 19º52’S / 63º29’W), 5, 6, 10.XII.2012, Wappes, Bonaso and Skillman col.

Etymology. Named in appreciation of Nancy Croley, Administrative Secretary, Division of Plant Industry (FSCA), for sharing her expertise of all things FSCA and providing assistance to the first author during numerous visits to the FSCA over more years than we care to mention.

Remarks. Tropidion nancyae has a similar elytral pattern to T. buriti Martins and Galileo, 2012 (although more clearly marked), but differs as follows (female): antennae 2.2 times elytral length; scape slightly narrower at base ( Fig. 12 ); elytra 3.1 times pronotal length; in T. buriti ( Fig. 13–15 ) the antennae are 1.7 times elytral length, the scape ( Fig. 13, 15 ) is clearly wider at base, and the elytra are 3.4 times pronotal length. Additionally, the dark elytral pattern in the new species is consistently much more distinct than in the holotype of T. buriti , and the elytra are not translucent (partially translucent in one paratype female). It is not possible to know if the holotype female of T. buriti is a teneral specimen; however, other morphological differences allow easy separation of the two species.

Tropidion nancyae can be included in the alternative of couplet 12 of Martins and Galileo (2007) (translated; modified):

12(9).

− Each elytron with a single elliptical macula in basal half, not reaching suture or outer margin

(sometimes the entire anterior one-half is blackish). ........................................................... 12’ Each elytron with light central band in addition to the elliptical macula in basal one-half.. 13

12’(12). Antennae slightly longer than body (female); femoral club slender (see Bezark 2016). Brazil

(Espírito Santo). ................................................................................. T. batesi Martins, 1968 − Antennae clearly longer than body (female); femoral club large and wide ( Fig. 12 ). Bolivia. ....

.................................................................................................................... T. nancyae sp. nov.

Figures

Figures 6–15. 6–12. Tropidion nancyae sp. nov. holotype male: 6) Dorsal habitus. 7) Ventral habitus. 8) Lateral habitus. 9) Head, frontal view. 10) Head, oblique view. 11) Head, lateral view. 12) Dorsal habitus, paratype female. 13–15. Tropidion buriti, holotype female: 13) Lateral habitus. 14) Dorsal habitus. 15) Head, lateral view.