Chrysaethe panamensis, Bezark, Larry G. & Santos-Silva, Antonio, 2016

Bezark, Larry G. & Santos-Silva, Antonio, 2016, New Rhinotragini (Coleoptera, Cerambycidae) from Central and South America, Zootaxa 4109 (2), pp. 239-244 : 239-241

Chrysaethe panamensis sp. nov.

( Figs 1–3 )

Description. Holotype female. Integument mostly orange; head, mandibles, scape, pedicel, antennomeres III–V, prothorax, most of mesosternum, femora, and tibiae black; antennomeres VI–VII dark-brown; antennomeres VIII–XI reddish-brown, orange maculate; procoxae and apex of ventrite V brown; mesocoxae reddish-brown; metacoxae reddish-brown, orange maculate; tarsi dark-brown; elytra with dark-brown band laterally from about anterior seventh to apex, lighter toward base and apex; elytra brownish, reddish-brown between black band and suture, from about anterior seventh to posterior quarter (lighter toward apex).

Head. Rostrum (between apex of inferior ocular lobe and genal apex) about as long as 0.5 times length of lower eye lobe in frontal view. Frons coarsely, abundantly punctate, distinctly sparser toward center of area between eyes; with minute, very sparse setae, slightly longer close to eyes. Area between antennal tubercles and upper eye lobes coarsely, densely punctate; with long, sparse setae. Area behind upper eye lobes coarsely rugosepunctate. Area behind lower eye lobes coarsely punctate close to eye, smooth toward margin of prothorax; with long, sparse setae close to eyes. Gula smooth, glabrous. Submentum coarsely, abundantly striate-punctate laterally, sparsely punctate centrally toward gula, abundantly punctate centrally toward anterior margin; with long, abundant erect setae. Genae finely, abundantly punctate toward base, smooth toward apex. Coronal suture distinct from clypeus to area between antennal tubercles. Distance between upper eye lobes 0.70 times length of scape. Distance between lower eye lobes in frontal view 0.45 times length of scape. Antennae as long as 1.1 times elytral length; reaching about base of distal quarter of elytra; antennomeres III–V filiform; antennomeres VI–X enlarged toward apex; antennomeres VI–XI forming slightly distinct club. Scape, pedicel, and antennomeres III–V with long, dark, thick setae ventrally; antennal formula based on antennomere III: scape = 0.79; pedicel = 0.27; IV = 0.63; V = 0.81; VI = 0.78; VII = 0.69; VIII = 0.60; IX = 0.57; X = 0.54; XI = 0.67.

Thorax. Prothorax cylindrical, 1.35 times as long as wide, without lateral tubercles, with sides slightly widened in basal 2/3, weakly constricted at base and before apex, with posterior margin slightly wider than anterior margin. Sides of prothorax coarsely, abundantly punctate on large area, narrowed from base to anterior margin, almost impunctate on remaining surface; with short and long, sparse setae. Pronotum coarsely, densely punctate, except for less coarsely punctate area close to base, smooth, narrow area close to anterior margin, and small, rhomboid, microsculptured area centrally at basal half; anterior half widely, shallowly, transversely depressed; with narrow, deep, transverse sulcus before anterior margin; with long, sparse setae throughout. Prosternum finely, abundantly punctate on basal two-thirds (centrally finely striate); anterior third, finely, transversely striate, almost glabrous; punctate area with short and long, abundant setae. Prosternal process distinctly narrow on basal half, notably triangularly enlarged on distal half; apex truncate; center of triangular area depressed; with short, abundant setae throughout. Procoxal cavities closed behind. Mesosternum, mesepimera and mesepisterna pubescent (not densely). Metasternum coarsely, shallowly, sparsely punctate laterally (punctures denser anteriorly); with long, sparse setae laterally, with short, sparse setae on distal quarter, pubescent close to mesocoxal cavities (not densely), glabrous on remaining surface. Metepisterna coarsely, shallowly, sparsely punctate laterally; with long, sparse setae. Scutellum with short, sparse setae; longitudinally sulcate centrally; apex emarginate centrally. Elytra. Reaching distal third of fourth abdominal segment; coarsely, abundantly punctate throughout; with short, sparse setae throughout, more distinct on basal half, interspersed with long setae on basal third; apex truncate; outer apical angle subrounded; sutural angle slightly projected. Legs. Femora clavate; metafemora distinctly longer than pro- and mesofemora; apex of metafemora reaching apex of third abdominal segment. Metatarsomere I 1.15 times as long as II–III together.

Abdomen. Subcylindrical, gradually enlarged from base to apex of second segment, and then gradually narrowed to apex of fifth segment. Ventrites moderately finely, abundantly punctate laterally, sparsely toward center, mainly on ventrites IV–V (punctures finer from I to V); with short and long, sparse setae, slightly more abundant laterally on apex of ventrite V; apex of ventrite V truncate.

Dimensions in mm (holotype female). Total length (from mandibular apex to abdominal apex), 8.40. Prothorax: length, 1.40; anterior width, 0.85; posterior width, 0.95; largest width, 1.00. Elytra: humeral width, 1.25; elytral length, 5.20.

Type material. Holotype female from PANAMA, Chiriqui: Rio Candela (1670 m; Parque Nacional de Amistad; 08º53’ 57.3N / 82º44’ 18.1W), 28.I.2014, L.G. Bezark col. ( CAS).

Etymology. The specific epithet refers to the country where the holotype was collected.

Remarks. Chrysaethe panamensis sp. nov. is similar to C. viriditincta (Giesbert, 1991) , but differs as follows (female): basal antennal segments black; legs dark (black and dark-brown); metafemoral club slender. In C. viriditincta (see holotype and allotype photographs in Bezark 2016), the basal antennal segments are testaceous, mainly on antennomeres III–V, and the metafemoral club is thicker (see photo in Bezark 2016). Chrysaethe panamensis sp. nov. also resembles Eclipta championella (Bates, 1870) ( Fig. 4 ), but differs by the pronotum slender (proportionally shorter and more rounded laterally in E. championella ), and by the elytra longer, reaching distal third of fourth abdominal segment (almost reaching apex of third abdominal segment in E. championella ).

Figures

FIGURES 1 – 4. Chrysaethe panamensis sp. nov. 1 – 3, holotype female: 1, dorsal habitus; 2, ventral habitus; 3, head, frontal view. 4, Eclipta championella, female, dorsal habitus.