Nealcidion zigzag Monné, Botero, Olivier & Santos-Silva, 2024, sp. nov.

Nealcidion zigzag sp. nov. (Figs 81–86) Description. Holotype female. Integument mostly dark brown; ventral mouthparts dark orangish brown, except brownish apex of palpomeres; anteclypeus brown close to postclypeus, brownish close to labrum; labrum mostly brown; basal half of mandibles mostly dark reddish brown, apical half black; scape dark orangish brown except brownish posterior third of dorsal surface; pedicel orangish brown on basal half, dark reddish brown on apical half; antennomere III orangish brown except brown apical fifth; antennomeres IV–V orangish except brown apex; antennomeres VI–X orangish on basal half, brown apically, reddish brown on remaining surface; antennomere XI orangish. Posterior half of elytra mostly brown. Coxae, trochanters, and femoral peduncles orangish; femoral club orangish except two wide brownish maculae dorsally and laterally. Tibiae light reddish brown on basal quarter, orangish on remaining basal half; protibiae light brown on dorsal and lateral apical half, dark orangish brown ventrally on apical half; meso- and metatibiae brown dorsally and laterally on apical half, dark orangish brown ventrally on apical half. Tarsomeres I orangish except dark reddish brown apex; tarsomeres II–IV dark reddish brown; tarsomeres V orangish brown on basal 2/3, dark reddish brown on apical third. Abdominal ventrites 1–3 brown laterally, dark brown centrally, except dark reddish brown apex of 1 and reddish brown apex of 2–3, dark orangish brown on remaining surface; abdominal ventrite 4 brown laterally, dark brown on center of basal half, orangish on remaining surface; ventrite 5 reddish brown, except dark-brown anterocentral third, and orangish sides of apex. Head. Frons abundantly, finely, shallowly punctate; with abundant straw-colored pubescence not obscuring integument on half close to clypeus, yellowish-brown pubescence on superior half close to median groove, partially brownish pubescence on remaining superior half, except glabrous median groove; with one long, erect dark-brown seta close to eyes. Area between antennal tubercles and posterior margin of upper eye lobes with dense yellowish-brown pubescence, except lighter pubescence close to median groove between antennal tubercles, pale yellow close to eyes, brownish pubescence laterally between antennal tubercles, and glabrous median groove and oblique band on each side of median groove between antennal tubercles and upper eye lobes, together forming a Psi glabrous area. Remaining surface of vertex with abundant dark brown pubescence toward eyes, pubescence gradually yellowish-white toward glabrous area close to prothorax, except glabrous median groove. Area behind upper eye lobes with pubescence as on posterior region of vertex close to it, abundant light yellowish-brown pubescence on remaining surface, except glabrous area close to prothorax. Area behind lower eye lobes with abundant light yellowish-brown pubescence partially obscuring integument, pubescence more pale yellow close to eye, except narrow glabrous area close to prothorax. Genae 0.8 times length of lower eye lobe; with light yellowish-brown pubescence not obscuring integument, except glabrous apex; with a few long, erect dark-brown setae interspersed. Wide central area of postclypeus with abundant straw-colored pubescence not obscuring integument, except glabrous central region; with one long, erect dark-brown seta on each side close to frons, long, erect yellowish-brown setae laterally close to anteclypeus, and long, erect straw-colored setae interspersed on remaining surface close to anteclypeus. Labrum with abundant yellowish pubescence not obscuring integument on posterior half, glabrous on anterior half, except fringe of golden setae on anterior margin; with long, erect setae interspersed on posterior half, setae dark brown basally, gradually paler toward their apices. Antennal tubercles mostly with light yellowish-brown pubescence partially obscuring integument, pubescence darker dorsally. Basal half of outer surface of mandibles triangularly depressed, with abundant straw colored pubescence partially obscuring integument, with a few long, erect setae of same color interspersed; apical half glabrous. Distance between upper eye lobes 0.19 times distance between outer margins of eyes; in ventral view, distance between lower eye lobes 0.55 times distance between outer margins of eyes. Antennae 2.1 times elytral length, reaching elytral apex middle of antennomere VI. Scape slightly sinuous internally; with abundant yellowish pubescence not obscuring integument, except yellowish-white pubescence on apex; with abundant, long, erect dark yellowish-brown setae interspersed ventrally. Pedicel with abundant yellowish-white pubescence basally and sparse yellowish pubescence on remaining surface; with a few long, erect dark yellowish-brown setae interspersed ventrally. Antennomeres III–X with abundant yellowish-white pubescence not obscuring integument on light integumental area and moderately sparse yellowish pubescence on dark integument area; III–V with long, erect brownish setae interspersed ventrally, setae sparser toward V; VI–X with a few long, dark setae directed backward apically. Antennomere XI with abundant yellowish-white pubescence not obscuring integument. Antennal formula (ratio) based on length of antennomere III: scape = 0.82; pedicel = 0.10; IV = 0.74; V = 0.62; VI = 0.56; VII = 0.47; VIII = 0.44; IX = 0.44; X = 0.40; XI = 0.38. Thorax. Prothorax wider than long; anterior and posterior constrictions narrow, well marked; sides with short, slight tumid projection close to anterior constriction, and with wide, slightly tumid projection between anterior and posterior fifths. Pronotum with slightly oblique and elevated gibbosity on each side of anterior half; with subconical, moderately elevated tubercle centrally on posterior half; with moderately coarse and abundant punctures surrounding central tubercle, sparse, coarse punctures on sides of anterior fifth, arched row of coarse punctures on posterior quarter, these punctures coarser than on remaining surface, and a few coarse punctures laterocentrally and after central tubercle; with abundant light yellowish-brown pubescence not obscuring punctures, except anterocentral 2/3 with abundant dark yellowish-brown pubescence not obscuring integument, these pubescence golden depending on light source, especially on posterior half, and glabrous anterior and posterior sulci; with a few long, erect dark setae posterolaterally. Sides of prothorax with dense light yellowish-brown pubescence, except glabrous anterior sulcus and narrow, shallow sulcus before middle, narrow sulcus longitudinal from near pronotum do near prosternum, then distinctly arched backward. Prosternum with dense light yellowish-brown pubescence laterally and abundant, somewhat yellowish-white pubescence not obscuring integument centrally, except glabrous anterior sulcus. Sides of ventral surface of meso- and metathorax with dense light yellowish-brown pubescence, slightly darker lateroanteriorly on metaventrite; remaining surface with abundant yellowish-white pubescence not obscuring integument. Narrowest area of prosternal process 0.43 times procoxal width; apex of mesoventral process 0.59 times mesocoxal width. Scutellum with abundant yellowish-white pubescence, slightly sparser anterocentrally, except light yellowish-brown pubescence on sides of anterior half. Elytra. Sides slightly convergent on anterior half, more distinctly convergent on posterior half; apex obliquely truncate, slightly concave centrally; abundantly, coarsely punctate on anterior half, subaligned from middle to posterior quarter, mostly absent on posterior quarter; centrobasal crest elevated, about as long as basal width of scutellum, with abundant, short blackish setae dorsally; with transverse, wide, mostly dark-brown pubescent band between centrobasal crest and suture, this band surpassing apex of centrobasal crest; with wide, oblique, both dark yellowish-brown and brownish pubescent band from transverse dark pubescent band to epipleural margin; with abundant light yellowish-white pubescence from anterior third to after middle, from suture to epipleural margin, distinctly narrowed toward epipleural margin, with anterior margin truncate close to suture and oblique toward epipleural margin, and posterior margin almost forming zig-zag and distinctly projected backward close to suture, except subrectangular area dorsally with reddish-brown pubescence not obscuring integument; remaining anterior half with abundant light yellowish-brown pubescence toward suture and yellowish-brown pubescence toward epipleural margin, area with yellowish-brown pubescence with irregular brownish pubescent areas interspersed; area close to anterior region with yellowish-white pubescence with wide, somewhat zig-zag reddish-brown pubescent band not obscuring integument, from suture to epipleural margin; area close to posterior previous band with irregular, fragmented light yellowish-brown pubescence; remaining surface with areas with reddish-brown pubescence not obscuring integument, separated by light yellowish-brown pubescence, reddish-brown pubescence forming three longitudinal bands dorsally. Legs. Femora with abundant yellowish-white pubescence not obscuring integument, pubescence slightly sparser and darker on dark integumental areas on femoral club. Basal half of tibiae with abundant yellowish-white pubescence not obscuring integument; apical half of protibiae with moderately sparse pubescence dorsally and laterally, except dense yellowish pubescence on apex, and ventral surface with abundant, bristly dark yellowish-brown pubescence; apical half of meso- and metatibiae with moderately sparse, short, both erect and decumbent dark yellowish-brown setae, except abundant, short, erect brown setae dorsally on mesotibiae, and abundant, bristly yellowish-brown setae ventrally. Dorsal surface of tarsom