Nealcidion antonkozlovi, Monné & Nascimento & Monné & Santos-Silva, 2019

Monné, Miguel A., Nascimento, Francisco E. De L., Monné, Marcela L. & Santos-Silva, Antonio, 2019, New records, new genera, and new species in Acanthocinini (Lamiinae) from the Neotropical region, and new synonym in Cerambycinae (Coleoptera, Cerambycidae), Zootaxa 4624 (4), pp. 491-506 : 497-498

Nealcidion antonkozlovi sp. nov.

( Figures 14–17 )

Description. Female. Integument mostly dark brown, almost black in some areas; apex of last palpomeres reddish brown; anterior area of labrum reddish brown; antennae gradually yellowish brown toward distal segments; tibiae with yellowish-brown ring close to midlength; metatarsomere I reddish-brown on basal half.

Head. Frons nearly square, finely, shallowly, sparsely punctate; with light yellowish-brown pubescence not obscuring integument, more whitish close to eyes; with a few long, black, thick setae close to eyes. Vertex with light yellowish-brown pubescence, interspersed with short, thick white setae, except glabrous, central diamond area between antennal tubercles and upper eye lobes. Antennal tubercles with light yellowish-brown pubescence not obscuring integument, denser, slightly longer on narrow distal area. Area behind upper eye lobes with pubescence and setae as on vertex; area behind lower eye lobes with yellowish pubescence close to eyes, bristly close inferior side, glabrous on remaining surface. Genae minutely, transversely striate close to eye, smooth on remaining surface; with moderately sparse grayish-white pubescence toward ventral surface, glabrous on remaining surface; with a few long, erect, dark setae close to eye. Postclypeus transversely divided by narrow carina, with anterior area lower than posterior one; with light yellowish-brown pubescence on wide central area, not obscuring integument, glabrous laterally; with one long, erect, dark seta on each side of wide central area. Labrum slightly inclined anteriorly; with sparse grayish-white pubescence interspersed with long dark setae directed forward. Gulamentum smooth, glabrous on wide posterior area, depressed with short grayish-white pubescence not obscuring integument anteriorly, with long, erect, moderately sparse dark setae close to anterior margin. Distance between upper eye lobes 0.15 times length of scape; in frontal view, distance between lower eye lobes 0.47 times length of scape. Antennae about 2.0 times elytral length, reaching elytral apex at distal half of antennomere VI; scape with brownish pubescence not obscuring integument, interspersed with short, decumbent, thick white setae dorsally and laterally, with row of long, erect, moderately sparse dark setae at central 2/4 of ventral surface, distinctly denser, not forming row at posterior quarter; antennomeres III–X with narrow, dense ring with whitish pubescence basally, and brownish pubescence (lighter toward distal segments) not obscuring integument on remaining surface; basal antennomeres with short, decumbent, thick, sparse white setae dorsally; antennomeres III–V with long, erect brownish setae ventrally, distinctly sparser in V; antennomere XI with basal and apical ring with whitish pubescence. Antennal formula (ratio) based on length of antennomere III: scape = 0.92; pedicel = 0.09; IV = 0.83; V = 0.61; VI = 0.54; VII = 0.47; VIII = 0.46; IX = 0.46; X = 0.45; XI = 0.48.

Thorax. Prothorax with large, rounded tubercle about middle. Pronotum with tree large gibbosities, one elongate, oblique on each side of anterior half, another subelliptical, starting at posterior half, following slightly carina-shaped toward anterior quarter; coarsely, deeply, moderately sparsely punctate posteriorly, shallowly, sparsely punctate laterally and anteriorly; area on lateral gibbosities, and subcircular macula after lateral gibbosities with dark, slightly conspicuous pubescence (area between those areas with sparse pale pubescence interspersed with short, decumbent, thick white setae); central area with sparse pale pubescence interspersed with short, decumbent, thick white setae; area on each side of gibbosities with wide, longitudinal, sinuous yellowish-brown pubescent band, prolonged toward sides posteriorly (center of this latter area with projection forward); remaining surface with brownish pubescence not obscuring integument, sparser posteriorly, interspersed with short, decumbent, thick white setae; with a few long, erect yellowish setae posteriorly. Sides of prothorax with yellowish-brown pubescence not obscuring integument, more grayish-white on some areas, interspersed with short, decumbent, thick white setae. Ventral surface of thorax with light yellowish-brown pubescence not obscuring integument (more whitish depending on light intensity); with moderately short, sparse, decumbent whitish setae on sides of metaventrite. Scutellum with yellowish brown pubescence centrally, brownish, slightly conspicuous laterally. Elytra. Coarsely, abundantly rugose-punctate on basal half, sparsely, shallowly punctate on distal half; basal crests slightly elevate, with dense tuft of dark setae directed forward; with moderately distinct carina from basal crest to posterior quarter, and another carina, less distinct, between the former and inclined area; with three rows of small, sparse tufts with dark, short, setae, one along each dorsal carina, another on border between dorsal and inclined area; with grayish-brown pubescence not obscuring integument, interspersed with yellowish-brown pubescence except small yellowish-white pubescent spots on sides of middle, and large, irregular yellowish-white macula close to suture slightly after middle; with short, decumbent, thick, sparse white setae throughout; apex obliquely truncate. Legs. Femora with slightly conspicuous brownish pubescence interspersed with irregular, large areas with yellowish-white pubescence, except posterior half of club without yellowish-brown pubescence, and with distal ring with yellowish pubescence; entire surface with short, decumbent, thick white setae. Tibiae with moderately sparse yellowish-white pubescent ring basally, with yellowish-white pubescent ring on light area, with brownish slightly conspicuous pubescence on remaining surface, except brownish tuft on dorsal sulcus of mesotibiae; with sparse, decumbent, thick white setae on dark areas; with sub-erect yellowish-brown setae on posterior half of meso- and metatibiae. Light area of metatarsomere I with yellowish-white pubescence; remaining areas of tarsi with brownish pubescence.

Abdomen. Last tergite narrow, acute, partially not covered by elytra. Ventrites with yellowish-brown pubescence not obscuring integument (more grayish-white depending on light intensity), interspersed with decumbent, moderately short whitish setae; sides of ventrites I–IV with yellowish-brown pubescent spot on each side; posterior area of ventrite V with long, erect, dark setae; apex of ventrite V narrowly rounded, slightly emarginate centrally.

Dimensions (mm). Total length, 11.90; prothoracic length, 1.70; anterior prothoracic width, 2.10 (2.35, slightly after anterior margin); posterior prothoracic width, 2.70; maximum prothoracic width (between apex of lateral tubercles), 2.90; humeral width, 4.40; elytral length, 8.95.

Type material. Holotype female from ECUADOR, Pichincha: Camping Tambo Tanda (0º01’22”S / 78º38’48”W; 1969 m), 25.X.2011, V. Sinyaev col. ( MZSP).

Remarks. The general appearance of Nealcidion antonkozlovi sp. nov. is much like that of N. antennatum Monné & Monné, 2009 , but differs by the presence of rows of tufts with dark setae on elytra, which are absent in the latter. According to Charyn Micheli, (personal communication) on the holotype of N. antennatum : “There are two main tufts on the basal crests. The black spots along the costae appear slightly, in some cases, longer than the surrounding pubescence, but I would not call them tufts.” Furthermore, the general elytral pubescence is more grayish-brown, while it is more yellowish-brown in N. antennatum , without a distinct transverse, sinuous band at about midlength (present in N. antennatum ), and with sparse, decumbent, thick white setae throughout (absent in N. antennatum ).

Etymology. The species is named in honor of Anton O. Kozlov, who sent the specimen for study and donated the holotype for MZSP collection.

Figures

FIGURES 8–17. 8, Label of Lagocheirus araneiformis, from ZMUC collection. 9, Handwritten labels by Linnaeus, from Horn & Kahle (1937). 10–13, Vitacinis luziae, holotype male: 10, Dorsal habitus; 11, Ventral habitus; 12, Lateral habitus; 13, Head, frontal view. 14–17, Nealcidion antonkozlovi, holotype female: 14, Head, frontal view; 15, Dorsal habitus; 16, Ventral habitus; 17, Lateral habitus.