Macarulus granitus, Vlasak & Santos-Silva, 2025

Macarulus granitus sp. nov.

( Figs 76–80 View FIGURES 76–80 )

Description. Male holotype. Integument mostly dark brown; ventral mouthparts light brown, more orangish brown on some areas; anteclypeus dull orangish brown; labrum dark yellowish brown on anterior third; antennomere III light brown, except dark-brown apex; antennomeres IV–XI orangish brown basally, light brown on remaining surface, except slightly darker apex, basal area of IV slightly darker. Tarsomeres I–II dark orangish brown, except dark-brown apical half; tarsomeres III dark orangish brown basally, mostly dark brown on remaining surface; tarsomeres IV dark orangish brown; tarsomeres V orangish on basal half, dark brown on apical half. Abdominal ventrites 1–4 orangish brown on each side of middle close to apical margin; ventrite 5 orangish brown on each side of middle close to anterior margin.

Head. Frons abundantly, finely punctate; with dense straw-colored pubescence almost obscuring integument; with a few long, erect dark-brown setae interspersed. Area between antennal tubercles with dense yellowish-white pubescence, except glabrous median groove; with long, erect dark-brown setae close to median groove. Remaining surface of vertex with dense yellowish-brown pubescence, except glabrous median groove. Area behind eyes with dense yellowish-brown pubescence; with a few long, erect pale setae close to eye. Genae 0.65 times length of lower eye lobe in frontal view; with dense yellowish-brown pubescence, with small, irregular glabrous areas interspersed; with long, erect dark-brown setae interspersed.Antennal tubercles with abundant yellowish-white pubescence. Wide central area of postclypeus with dense straw-colored pubescence, except glabrous oblique band on each side close to frons; with long, erect yellowish-brown setae interspersed. Sides of postclypeus glabrous. Labrum with abundant yellowish-white pubescence not obscuring integument on posterior 2/3, sparser close to anteclypeus, mostly glabrous on anterior third, except dense fringe of yellowish-brown setae on anterior margin; with long, erect yellowish-brown setae about middle and sides of anterior half. Gulamentum glabrous, except light yellowish-brown pubescence not obscuring integument on intermaxillary process and area close to it. Distance between upper eye lobes 0.06 times distance between outer margins of eyes; in frontal view, distance between lower eye lobes 0.46 times distance between outer margins of eyes. Antennae 2.0 times elytral length, reaching elytral apex at middle of antennomere VII. Scape with dense dull yellowish-brown pubescence, except glabrous small areas of insertion of erect setae dorsally and laterally; with long, erect dark-brown setae throughout, more abundant ventrally. Pedicel with abundant yellowish-white pubescence basally and abundant light-brown pubescence not obscuring integument on remaining surface; with long, erect dark-brown setae ventrally. Antennomere III with dense yellowish-white pubescence basally, and moderately abundant light yellowish-brown pubescence not obscuring integument on remaining surface, pubescence slightly darker apically; with abundant, erect dark-brown setae ventrally. Antennomeres IV–XI with abundant yellowish-white pubescence not obscuring integument, appearing darker on most surfaces due to integumental color; IV–X with long, erect dark-brown setae ventrally, setae gradually sparser toward X; IV–IX with a few long, erect dark-brown setae on apex of dorsal surface; antennomeres III–XI with short, erect yellowish setae interspersed, slightly more abundant toward XI. Antennal formula based on length of antennomere III: scape = 0.81; pedicel = 0.20; IV = 1.26; V = 1.06; VI = 0.94; VII = 0.85; VIII = 0.79; IX = 0.73; X = 0.70; XI = 0.76.

Thorax. Pronotum moderately sparsely, coarsely punctate; with dense, mostly yellowish-brown pubescence close to anterior and posterior margins, longitudinal central band on anterior quarter, two narrow, longitudinal bands on sides of anterior half, posteriorly fused about posterior region of lateral tubercles of prothorax, and large cordiform macula centrally, posteriorly continuing as a band toward posterior margin; remaining surface with dense whitish pubescence, except glabrous posterior sulcus; with a few long, erect dark-brown setae on sides. Sides of prothorax with dense yellowish-brown pubescence, except whitish pubescence close to pronotum anteriorly, and glabrous anterior and posterior sulci. Prosternum with abundant yellowish-brown pubescence laterally, slightly lighter close to procoxal cavities, and moderately abundant dark yellowish-brown pubescence not obscuring integument on remaining surface. Sides of prosternal process slightly convergent basally, then distinctly, gradually divergent toward apical fifth, where it is strongly widened; with dense yellowish pubescence on basal half, more yellowish-white and sparser on remaining surface; narrowest area 0.33 times procoxal width. Mesoventrite with pubescence as on prosternum. Mesanepisterna, mesepimera, metanepisterna, and sides of metaventrite with dense yellowish-brown pubescence; remaining surface of metaventrite with dense pale-yellow pubescence. Mesoventral process with dense straw-colored pubescence; sides and apex slightly concave; narrowest area 0.61 times mesocoxal width. Scutellum with dense yellowish-brown pubescence, darker and shorter on anterior half, with a few short yellowish-white setae interspersed, except dense yellowish-white pubescence on sides of anterior third. Elytra. Subparallel-sided on anterior 3/4, distinctly convergent toward apex on apical quarter; apex slightly obliquely truncate, with outer angle slightly projected; somewhat sparsely, coarsely punctate; centrobasal crest elongated, truncate dorsally; basal quarter mostly with dense yellowish-brown pubescence on sides of dorsal surface and on epipleura, with irregular areas with dark-brown pubescence interspersed, and oblique, moderately wide dark-brown pubescent band close to apex of this area; remaining anterior quarter with abundant dark yellowish-brown pubescence not obscuring integument, with short, decumbent whitish setae interspersed, especially close to suture, dense yellowish pubescent macula close to inner margin of oblique dark pubescent band, and dense yellowish-brown pubescent macula near yellowish macula; remaining anterior half with dense white pubescence on sides of dorsal surface and on epipleura and abundant grayish-white pubescence on remaining dorsal surface, the posterior margin of these areas are obliquely ascendant from suture to epipleural margin, except sparse pale-yellow pubescent spots dorsally, longitudinal, two dashed pale-yellow pubescent bands on epipleura, and moderately wide pale-yellow pubescent band close to apex of white pubescent area on epipleural region; apical half with complex pubescent pattern, mostly dark brown laterally close to anterior half, with wide, transverse pale-yellow pubescent band dorsally on beginning of posterior third, from near suture to middle of dorsal surface, with dark-brown pubescent band close to anterior and posterior margins of the former band, with dense, wide yellowish-white pubescent band on beginning of posterior quarter, from sides of dorsal surface to epipleural margin, dense yellowish-white pubescence close to suture on apical fifth and entire apex, this pubescent area concave before apex, two whitish pubescent bands on sides of dorsal surface, partially fused anteriorly, from just after middle to posterior quarter, dense yellowish-white pubescent spot near apex of innermost white pubescent band, and remaining surface with abundant yellowish-brown pubescence. Legs. Profemora with abundant yellowish-white pubescence basally, and abundant yellowish-brown pubescence on remaining surface, except arc about middle of club, covering dorsal and lateral surfaces, with sparser yellowish-brown pubescence; with sparse, long, erect dark-brown setae interspersed dorsally. Mesofemora with dense yellowish-white pubescence basally, entire basal 3/4 of outer surface, light yellowish-brown pubescence on apical quarter of outer surface, and abundant yellowish-brown pubescence on remaining surface, except brown pubescent arc about middle of club, covering dorsal and lateral surfaces; with sparse, long, erect dark-brown setae interspersed dorsally. Metafemora with dense yellowish-white pubescence basally, and abundant yellowish-white pubescence on remaining surface, pubescence sparser on outer surface, except arc about middle of club, covering dorsal and lateral surfaces, with sparser yellowish-brown pubescence; with a few long, erect dark-brown setae interspersed dorsally. Protibiae with complex pubescent pattern, mostly yellowish brown and whitish on basal 3/4 of dorsal and lateral surfaces, and basal half of ventral surface, mostly dark brown with yellowish-white pubescence interspersed dorsally and laterally on apical quarter, and dense, bristly yellowish-brown pubescence on apical half of ventral surface; with long, erect dark-brown setae interspersed dorsally and laterally. Mesotibiae with abundant yellowish-white pubescence on basal quarter, entire remaining outer surface, longitudinal yellowish-white pubescent band centrally on apical half of outer surface, both yellowish-white and brownish pubescence on remaining basal 3/4 of dorsal and lateral surfaces, pubescence mostly yellowish white dorsally on apex of this region, and abundant dark-brown pubescence on remaining outer surface; apical quarter with dense, bristly dark-brown pubescence, partially yellowish brown ventrally; with long, erect dark-brown setae interspersed on basal 3/4. Metatibiae mostly with dense yellowish-white pubescence on basal 3/4, and dense, bristly dark-brown pubescence on apical quarter; with moderately abundant, erect dark-brown setae interspersed on basal 3/4. Dorsal surface of tarsomeres with sparse yellowish-white pubescence, denser on basal half of metatarsomere I; with long, erect dark-brown setae on sides of apical region of I–III and V.

Abdomen. Ventrite 1 with dense light yellowish-brown pubescence, yellower on apex, except irregular area on each side mostly with abundant dark-brown pubescence; ventrite 2 mostly with dark-brown pubescence laterally, and dense, both light yellowish-brown and yellowish-white pubescence on remaining surface, except U-shaped area posterocentrally with sparser yellowish-brown pubescence; ventrites 3–4 mostly with dense yellowish-white pubescence laterally, denser and whiter on posterior half of ventrite 4, except sparser pubescence on posterior half of this area, dense light yellowish-brown pubescence anterocentrally, and U-shaped central area with sparser dark yellowish-brown pubescence, from base to apex; ventrite 5 mostly with light yellowish-brown pubescence centrally, sparser dark yellowish-brown pubescence laterally on basal half, and abundant whitish pubescence laterally on apical half, and long, erect dark-brown setae interspersed on posterior half; apex of ventrite 5 slightly rounded.

Dimensions (mm). Total length, 9.05; prothoracic length, 1.55; anterior prothoracic width, 1.80; posterior prothoracic width, 2.10; maximum prothoracic width, 2.20; humeral width, 3.10; elytral length, 6.60.

Type specimen. Male holotype from ECUADOR, Loja: Vicinity of Macará , 700 m, at UV light, 20–24 Feb 2024, J. Vlasak leg. ( MZSP, formerly JVCO) .

Etymology. The name “ granitus ” (Latin) refers to the granite-like elytral pubescence.

Remarks. See remarks in Macarulus gen. nov.

COLOBOTHEINI Thomson, 1860