Nealcidion lingafelteri Santos-Silva and Botero

Santos-Silva, Antonio & Botero, Juan Pablo, 2024, The unbelievable fauna of American Lamiinae (Coleoptera: Cerambycidae): description of two new species, transference, and notes in Acanthocinini, and a new record in Calliini, Insecta Mundi 2024 (28), pp. 1-17 : 12-16

Nealcidion lingafelteri Santos-Silva and Botero , new species

( Fig. 26–31 )

Description. Holotype male ( Fig. 26–30 ). Integument mostly black; head capsule dark brown; ventral mouthparts dark brown, except palpomeres black with apices brown; anteclypeus brown with irregular dark-brown areas; anterior quarter of labrum brown; scape dark brown; pedicel and antennomeres III–V brown with dark-brown apex; antennomeres VI–XI orangish brown, gradually lighter toward XI, with apex darkened. Femoral peduncles partially dark reddish-brown. Tibiae dark brown basally, brown on remaining surface. Tarsomeres dark brown, lighter on basal 2/3 of meso- and metatarsomeres I. Apex of ventrites 1–4 dark reddish-brown.

Head. Frons abundantly, shallowly, minutely punctate; with abundant yellow pubescence partially obscuring integument laterally and centrally, pubescence sparser on remaining surface; with one long, erect dark-brown seta close to each eye. Area between antennal tubercles and upper eye lobes abundantly, shallowly, minutely punctate; with abundant yellow pubescence not obscuring integument, except smooth and glabrous median groove; remaining surface of vertex abundantly, shallowly, minutely punctate; with abundant yellow pubescence between eyes, this pubescence centrally projected toward prothorax, narrowed toward its apex, except glabrous median groove; remaining surface subglabrous. Area behind upper eye lobes with dense yellow pubescence close to eyes, this area widened from middle; with oblique, wide dark-brown pubescent band from yellow pubescence to prothorax; remaining surface almost glabrous. Area behind lower eye lobes with dense yellow pubescence, except elongated area with minute and sparser pubescence located on middle of superior region. Genae abundantly, shallowly, minutely punctate, except smooth apex; with abundant yellow pubescence partially obscuring integument, pubescence slightly sparser close to frons and clypeus, except glabrous, inverted V-shaped area frontally close to glabrous smooth apex. Antennal tubercles with abundant yellow pubescence (pubescence partially lost frontally and dorsally). Wide central area of postclypeus with moderately sparse pale-yellow pubescence; with one long, erect dark-brown seta on each side. Sides of postclypeus glabrous. Labrum sparsely, finely punctate on posterior half, smooth on anterior half; posterior half with a few short, decumbent, yellowish-white setae and a few long, erect dark-brown setae; anterior half glabrous, except short fringe of yellowish-brown setae on anterior margin. Gulamentum smooth glabrous, except intermaxillary process abundantly, finely punctate, and moderately abundant yellowish-white pubescence not obscuring integument. Distance between upper eye lobes 0.20 times distance between outer margins of eyes; in frontal view, distance between lower eye lobes 0.51 times distance between outer margins of eyes. Antennae 2.0 times elytral length (missing apical region of XI), reaching elytral apex at apical third of antennomere VI. Scape slightly sinuous, strongly projected inward and backward apically; with abundant yellowish-white pubescence not obscuring integument (pubescence more pale-yellow depending on light intensity and lost in most dorsal and lateral areas), except dense, bristly, dark yellowish-brown pubescence on apical projection and yellow pubescence on apex of dorsal and lateral surfaces; with a few long, erect dark-brown setae ventrally. Pedicel with abundant pale-yellow pubescence not obscuring integument, expect brown pubescence on posterior 2/3 of dorsal surface; with a few long, erect brown setae ventrally. Antennomere III with abundant pale-yellow pubescence (apparently, lost on part of surface), except dark apical region with abundant brownish pubescence not obscuring integument dorsally and laterally and apex of ventral surface with abundant bristly yellowish-brown setae; with moderately abundant and long, erect brown setae ventrally. Antennomere IV with abundant yellowish-white pubescence not obscuring integument, except apex of dorsal and lateral surfaces with brownish pubescence and apex of ventral surface with abundant bristly yellowish-brown setae; with moderately sparse and long, erect brown setae ventrally. Antennomeres V–VII with abundant yellowish-white pubescence partially obscuring integument on light area and sparser yellowish-white pubescence on dark area; V with sparse and long, erect brown setae ventrally. Antennomeres VIII–XI with abundant yellowish-white pubescence partially obscuring integument. Antennal formula (ratio) based on length of antennomere III: scape = 0.74; pedicel = 0.09; IV = 0.77; V = 0.54; VI = 0.45; VII = 0.43; VIII = 0.41; IX = 0.38; X = 0.37; XI = 0.17 (broken).

Thorax. Prothorax wider than long; with large, rounded protuberance on middle of central region. Pronotum with moderately large, elevated tubercle on each side of anterior half, obliquely truncate apically, and elongated, slightly elevated gibbosity centrally from anterior third to apical sixth; laterally with dense yellow pubescence, with irregular, both small and large areas with dark-brown pubescence interspersed; wide central area with sparse pale-yellow pubescence (apparently, most of pubescence was lost), except glabrous anterolateral tubercles and central gibbosity. Sides of prothorax with dense yellow pubescence close to prothorax, except irregular, large dark-brown pubescent macula on anterior third, and abundant yellowish pubescence not obscuring integument toward prosternum. Prosternum with abundant yellowish-white pubescence not obscuring integument, except almost glabrous area close to anterior margin. Prosternal process with abundant yellowish-white pubescence not obscuring integument on basal half, pubescence denser on apical half; narrowest area 0.14 times procoxal width. Mesoventrite with abundant yellowish pubescence not obscuring integument, pubescence denser basally and centrally, except apex of sides with dense yellow pubescence. Mesanepisterna with abundant yellow pubescence partially obscuring integument, except glabrous, irregular areas interspersed. Mesepimera with abundant yellow pubescence partially obscuring integument. Mesoventral process with abundant yellowish pubescence not obscuring integument; apex 0.36 times mesocoxal width. Metanepisterna with abundant yellow pubescence not obscuring integument. Sides of metaventrite with dense yellow pubescence; remaining surface with very sparse yellowish pubescence, except denser pubescence apically. Scutellum with yellow pubescence not obscuring integument, pubescence more yellowish-white apically and apparently partially lost. Elytra. Centrobasal crest short, elevated, obliquely truncate and asperate-punctate dorsally; humeral carina slightly marked from humerus to apical sixth; dorsal surface with two slightly distinct longitudinal carinae, innermost starting on centrobasal crest, outermost starting on base between centrobasal crest and humerus, both subfused apically with humeral carina; abundantly, coarsely punctate on anterior half, punctures finer and sparser on posterior half; sides slightly, gradually convergent from humerus to posterior quarter, then more distinctly narrowed toward apex; apex oblique, slightly concave, with outer apex triangularly projected; with abundant yellowish pubescence not obscuring integument, with spots with brownish sparse pubescence interspersed, except: dense yellow pubescence between humeral carina and epipleural margin, except glabrous spots interspersed close to epipleural margin; irregular, dense yellow pubescence on sides of anterior third, reaching and surrounding centrobasal crest, except its anterior margin, with irregular dark-brown pubescent maculae interspersed; dense, arched yellow pubescent band about middle, from humeral carina to after central region of dorsal surface; large blackish pubescent macula close to arched yellow pubescent band, from humeral carina to after central region of dorsal surface; large, somewhat irregular blackish pubescent macula on posterior third, surrounded by dense yellow pubescence, dense yellow pubescence with spots with sparse brown pubescence interspersed, especially anteriorly; and oblique, blackish pubescent band near to outer margin of posterior blackish pubescent macula. Legs. Femora with dense yellowish pubescence, yellower depending on light intensity, except brownish pubescent macula on dorsal surface of femoral club; profemora with sparse, small, rounded tubercles on ventral surface of femoral club ( Fig. 29 ). Protibiae with small, rounded tubercles on margin of ventral surface, larger on inner margin; basal third of dorsal and lateral surfaces with sparse yellowish-white pubescence, central region with dense, wide yellowish-white pubescence dorsally and laterally, basal third of ventral surface almost glabrous and remaining ventral surface with dense, bristly yellowish-brown pubescence, dorsal and lateral surfaces with sparse brownish pubescence dorsally and laterally close to dense yellowish-white central pubescence, dorsal and inner surface of apical region with abundant yellowish-white pubescence not obscuring integument, and apical region of outer surface with dense, bristly yellowish-brown pubescence. Meso- and metatibiae with dense yellowish-white pubescence on dorsal base, sparse yellowish-white pubescence on base of lateral surface and ventral surfaces, remaining basal third with sparse brownish pubescence, remaining basal half with dense yellowish-white pubescence and apical half with dense, bristly yellowish-brown pubescence, slightly sparser close to dense yellowish-white pubescence, except on dorsal surface of mesotibia. Dorsal surface of tarsomeres mostly with yellowish-white pubescence; metatarsomere I longer than II–III together.

Abdomen. Ventrites with abundant yellow pubescence, denser laterally on sides of ventrites 1–4 and sides of posterior 2/3 of ventrite 5, except glabrous apex of ventrites 1–4. Apical margin of ventrite 5 widely concave.

Female ( Fig. 31 ). Similar to male, differing by shorter antennae, 1.8 times elytral length, and femoral clubs slender.

Note: The general pubescence in the paratype female is better conserved, and it does not have the oblique blackish pubescent band on posterior near the outer margin of the posterior blackish pubescent macula.

Dimensions in mm. Holotype male: Total length, 14.15; prothoracic length, 2.15; anterior prothoracic width, 2.30; posterior prothoracic width, 2.80; maximum prothoracic width, 3.15; humeral width, 4.60; elytral length, 10.60. Paratypes female/male: Total length, 13.00/10.00.

Type material. Holotype male from COSTA RICA, Puntarenas: Monteverde Biol. Sta., 20–25.V.1993, S.W. Lingafelter leg. ( USNM) . Paratype female from COSTA RICA, Puntarenas: Monteverde Cloud Forest Biological Preserve, 10°18.072′N – 84°47.897′W, 1575 m, 22.V.2019, MV/UV light, S.W. Lingafelter leg. ( SWLC); Paratype male from COSTA RICA, Puntarenas: Monteverde Biol. Sta., 4-9 January, 1989, F.T. Hovore leg. ( LGBC).

Etymology. The new species is dedicated to Steven W. Lingafelter (SWLC), collector of the type series, for his valuable contribution to the knowledge of the Cerambycidae .

Remarks. Nealcidion lingafelteri new species belongs to the group of species with narrow and elongate body (e.g. N. elongatum Monné, 1998 and N. napoense Nascimento and McClarin, 2018 - see photographs on Bezark 2023a and original descriptions). Among the species of this group, it is more similar to N. napoense , but differs by pronotum with elevated anterolateral tubercles (almost absent in N. napoense ), centrobasal crest of the elytra without erect setae dorsally (present in N. napoense ), and different elytral pubescent pattern, which includes large maculae with blackish pubescence (without large blackish pubescent maculae in N. napoense ).

Figures

Figures 26–30. Nealcidion lingafelteri new species, holotype male. 26) Dorsal habitus; 27) Ventral habitus; 28) Lateral habitus; 29) Head, frontal view; 30) Elytral centrobasal crests.

Figures 31–32. Lamiinae spp. 31) Nealcidion lingafelteri new species, paratype female, by Steven W. Lingafelter. 32) Colombicallia curta Galileo and Martins, 1992, female from Panama, dorsal habitus.