Pentanodes baldwini Heffern, Botero and Santos-Silva, 2023

Heffern, Daniel, Botero, Juan Pablo & Santos-Silva, Antonio, 2023, New species and taxonomical and geographical notes on Cerambycidae and Disteniidae (Coleoptera: Chrysomeloidea), Insecta Mundi 2023 (966), pp. 1-17 : 9-11

Pentanodes baldwini Heffern, Botero and Santos-Silva , new species

( Fig. 10–14 )

Description. Holotype male. Integument mostly black; anteclypeus and labrum partially reddish brown; palpomeres, apex of scape, most of pedicel, about basal half of antennomere III, basal quarter of antennomeres IV–VI reddish brown; antennomeres VII–VIII orangish with brownish apex; antennomeres IX–XI dark brown. Elytra with transverse eburneous band before middle, starting close to epipleural margin, not reaching suture. Femora and tibiae dark brown; tarsomeres I–II dark reddish brown; tarsomeres III–V and claws dark orangish brown. Ventrites 4–5 dark brown.

Head. Frons coarsely alveolate-punctate; with minute, sparse whitish setae on wide central area, sparse, short, bristly yellowish-white setae close to eyes, and sparse, long, erect, thick yellowish setae interspersed toward antennal tubercles. Vertex, area behind antennae, and eyes coarsely rugose-punctate, roughness finer on posterocentral area of vertex; with sparse, short, decumbent whitish setae, absent on posterocentral area of vertex, one long, erect, thick yellowish seta on each side between antennal tubercles, and a few long, erect, thick, both yellowish-white and yellowish-brown setae interspersed on posterolateral region of vertex, behind antenna, and behind eye. Genae coarsely rugose-punctate toward ventral surface, finely rugose-punctate toward clypeus, except smooth apex; with sparse, short, erect, both yellowish and brownish setae, except glabrous smooth area. Gulamentum almost smooth, glabrous close to prothorax, transversely striate, glabrous about central area, slightly depressed, striate-punctate, with sparse brownish pubescence and a few long, erect yellowish setae interspersed close to anterior margin. Maxillary palpomere IV and labial palpomere III securiform. Wide central area of postclypeus rugose-punctate, roughness and punctures finer than on frons; with sparse, short, decumbent yellowish-white setae, and one long, erect, thick yellowish seta on each side. Sides of postclypeus smooth, glabrous. Labrum glabrous close to anteclypeus, with sparse, erect, both short and long yellowish setae on wide central area, glabrous anteriorly. Anterior 2/3 of outer surface of mandibles coarsely rugose-punctate, with sparse, short, decumbent yellowish-white setae, and thick, long, erect yellowish-white setae interspersed (brownish basally on some setae); posterior third smooth, glabrous. Superior area of eyes projected upward, but not forming a distinct upper eye lobe; in frontal view, distance between eyes 0.6 times distance between outer margins of eyes. Antennae 1.7 times elytral length, surpassing elytral apex at base of antennomere XI. Scape subcylindrical; somewhat sparsely, finely punctate dorsally, except smooth apex, finely, transversely striate laterally and ventrally, with a few punctures interspersed laterally; with sparse, short, decumbent white setae dorsally, almost absent laterally and ventrally, and long, erect yellowish setae interspersed, erect setae more abundant dorsally. Pedicel with sparse, short, decumbent white setae, and long, erect yellowish setae interspersed. Antennomeres III–VI clavate, III more pedunculate-clavate; with somewhat abundant, short, decumbent white setae not obscuring integument, long, erect yellowish setae interspersed ventrally and apically, and short, erect yellowish-white setae interspersed dorsally. Antennomeres VII–XI with abundant white pubescence not obscuring integument, and short, erect setae of same color interspersed; antennomeres VII–VIII with long, erect yellowish setae on ventral apex. Antennal formula based on length of antennomere III: scape = 0.87; pedicel = 0.29; IV = 0.91; V = 1.04; VI = 0.96; VII = 0.62; VIII = 0.54; IX = 0.50; X = 0.41; XI = 0.56.

Thorax. Prothorax distinctly longer than wide; subparallel-sided on anterior half, distinctly constricted and narrowed on posterior half. Pronotum abundantly, coarsely, longitudinally rugose from near base to near apex, with sparse, coarse punctures interspersed; with a few short, decumbent yellowish-white setae on anterior 5⁄6, sparse, long, erect yellowish-brown setae on anterior 2/3, and somewhat abundant, decumbent whitish setae on posterior sixth. Sides of prothorax with sculpturing as on pronotum close to it, with a few coarse punctures on remaining surface; with sparse, short yellowish-white setae. Prosternum somewhat abundantly, coarsely punctate centrally close to procoxal cavities, sparsely, coarsely and shallowly punctate on remaining surface; with sparse, short, decumbent yellowish-white setae, more abundant on central area close to procoxal cavities, and sparse, long, erect yellowish setae. Prosternal process distinctly narrowed centrally, strongly widened on posterior third; narrowest area 0.11 times procoxal width; with sparse yellowish-white pubescence, more abundant on posterior third. Mesoventrite strongly, obliquely inclined from anterior third to mesoventral process; with a few short, decumbent, both whitish and yellowish setae centrally from base to posterior quarter, and abundant white pubescence not obscuring integument on remaining surface. Mesanepisternum and mesepimeron with abundant white pubescence partially obscuring integument. Mesoventral process with abundant white pubescence not obscuring integument, and a few long, erect yellowish-white setae interspersed; apex widened, bilobed, strongly emarginate centrally; narrowest area 0.4 times mesocoxal width. Metanepisternum almost glabrous, except apex with dense white pubescence. Metaventrite with a few short, decumbent yellowish setae and a few short, erect yellowish-brown setae, except dense white pubescence sides of posterior area. Scutellum with sparse, minute yellowish-brown setae. Elytra. Gradually, slightly inclined from base to eburneous macula, then convex toward apex; centrobasal crest absent; somewhat abundantly, coarsely punctate on anterior third, punctures gradually finer, sparser on posterior 2/3, with minute punctures interspersed near eburneous macula; with sparse, long, erect yellowish-brown setae, more abundant close to apex. Legs. Femora with sparse, long, erect yellowish-brown setae. Tibiae with sparse, short, decumbent yellowish-white setae, except abundant, bristly, yellowish-brown setae on ventral surface of protibiae, yellowish-brown setae gradually denser toward apex, and sparse, decumbent yellowish-brown setae on posterior third of ventral surface of meso- and metatibiae; with sparse, long, erect, yellowish-brown setae interspersed dorsally and laterally on pro- and mesotibiae, throughout on metatibiae. Metatarsomere I slightly longer than II–III together.

Abdomen. Ventrites with sparse, decumbent yellowish-white setae laterally, sparser centrally, and sparse, long, erect, yellowish-brown setae interspersed laterally.

Dimensions in mm. Total length, 4.05; prothoracic length, 1.10; anterior prothoracic width, 0.70; posterior prothoracic width, 0.60; maximum prothoracic width, 0.75; humeral width, 0.90; elytral length, 2.55.

Type material. Holotype male from PANAMA, CHIRIQUI: Boquete, Volcancito Rd. , 1300 m, 8 ° 46′31″N 82 ° 26′52″W, 15.VI.2020, malaise, B. B. Baldwin leg. ( TAMU, formerly DHCO).

Etymology. The new species is dedicated to Brian Baldwin, friend of the first author and collector of the holotype.

Remarks. Pentanodes baldwini new species is similar to P. xanthocollis (Chemsak, 1977) (see photographs on Bezark 2022a), but differs as follows: head and prothorax black; antennomere III almost pedunculate-clavate; pronotum coarsely longitudinally striate; elytral centrobasal crest absent; elytral eburneous macula not reaching suture. In P. xanthocollis , the head and prothorax are orangish, antennomere III gradually widened from base to apex, pronotum finely longitudinally striate, elytral centrobasal crest present, and the elytral eburneous macula reaching suture. Pentanodes baldwini new species differs from P. clavatus new species by the scape shorter and wider (longer and slender in P. clavatus ), absence of the centrobasal crest on the elytra (present in P. clavatus ), and elytral punctures more abundant, especially on basal half (sparser in P. clavatus ).

LAMIINAE Latreille, 1825 ACROCININI Swainson, 1840

Oreodera Audinet-Serville, 1835

Remarks. According to Souza et al. (2020): “According to the parsimony analysis, the monophyly of Acrocinini , including Acrocinus , Macropophora and Oreodera , is supported by six synapomorphies: prothorax with a conspicuous suture surrounding the lateral tubercle …; pronotum with linear coarse punctuation at the posterior margin …; protibia cylindrical …; protibia with a projection near sulcus at inner face ….; protibia without a pair of apical spurs at inner margin …; and protarsomere II longer than wide …;” and “Among the synapomorphies for Acrocinini , containing Acrocinus , Macropophora and Oreodera , the protibia without spurs is the most remarkable diagnostic character of the tribe.” Although the prothoracic suture surrounding the lateral tubercle is conspicuous in many species of Oreodera , it is slightly distinct, as reported by Souza et al. (2020), or even entirely absent in some species. Furthermore, the apex of the protibiae has a short but distinct spur in some species of Oreodera ( Fig. 18–19 ); however we did not find any species of Oreodera with two spurs on the apex of the protibiae, as occurs in all Acanthoderini examined by us. These differences, which do not fully agree with the concept of Acrocinini by Souza et al. (2020), may indicate that they are variable in Acanthoderini. However, a more detailed study of Acanthoderini will be needed to establish whether Oreodera really belongs to Acrocinini , in this case with corrections on the concept of this tribe, or if, in fact, that the features pointed out are just extreme variations on Acanthoderini, with intermediate conditions of the features in some genera, especially in Oreodera .

Figures

Figures 8–14. Pentanodes spp. 8–9) Pentanodes clavatus, paratype female: 8) Dorsal habitus; 9) Ventral habitus. 10–14) Pentanodes baldwini, holotype male: 10) Lateral habitus; 11) Dorsal habitus; 12) Ventral habitus; 13) Head, frontal view; 14) Eye lobe and pronotum.

Figures 15–22. Cerambycidae spp. 15) Euderces cribellatus (Bates, 1885), female from Panama, dorsal habitus; 16) Euderces cribellatus sensu Giesbert and Chemsak (1997). 17–18) Oreodera noguerai McCarty, 2001, female from Mexico (Jalisco):17) Dorsal habitus; 18) Apex of protibia. 19) Oreodera albilatera Martins and Monné, 1993, apex of protibia. 20) Adetus croton Heffern, Santos-Silva and Botero, 2019, male from Nicaragua. 21) Icimauna sarauaia Martins and Galileo, 1991, female from Peru. 22) Phoebe mexicana Bates, 1881, female from Mexico (Chiapas).