Guyarolea Tavakilian & Santos-Silva 2019, gen. nov.
Creators: name: Tavakilian, Gérard L.
name: Santos-Silva, Antonio
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Cerambycidae
Guyarolea

description: Guyarolea, gen. nov.
Type species: Guyarolea lalannecassoui, sp. nov.
Etymology. First letters of “ Guyane ” and last letters of Hilarolea Thomson, 1868, Greek diminutive of ἱλαρός, merry (feminine gender).
Description. Male. Small size. Body elongate, subcylindrical. Head opisthognathous, distinct elongate behind eyes, constricted near prothorax; frons slightly convex, unarmed; eyes not divided, with area of connection between lobes about as wide as half of widest area of upper eye lobe; distance between upper eye lobes equal to about 1.5 times width of one lobe; lower eye lobes about as long as 0.8 times genal length. Base of antennal tubercles moderately near each other. Antennae distinctly longer than body, 11-segmented; scape slender, gradually widened toward apex, with distinct apical cicatrix; pedicel much shorter than scape; antennomere III distinctly longer than scape and remaining antennomeres, not widened, with long, erect, sparse setae ventrally; antennomeres IV–X with long, erect, sparse setae ventrally; antennomere XI distinctly curved and stinger-shaped. Prothorax about as long as wide, sinuous laterally due to rounded central gibbosity and basal and distal constrictions. Pronotum elevated from basal quarter, with slightly distinct gibbosities. Elytra parallel-sided, pubescent; humeral carina absent; basal half with longitudinal moderately shallow sulci; epipleura without fringe of setae on basal area; apex rounded. Tarsal claws bifid, with inner tooth as long as outer tooth.
Remarks. Only two genera of Hemilophini have the antennomere XI stinger-shaped: Woytkowskia Lane, 1966, and Adesmoides Zajciw, 1967 (see photographs of the holotypes / paratype at Bezark 2017). The former belongs to the “Group E” and the latter to the “Group D”, both sensu Martins & Galileo (2014a). Guyarolea gen. nov. does not have distinct humeral carina; thus it belongs to the same group of Adesmoides. The new genus shares with Adesmoides the scape with distinct cicatrix, but differs by the distance between upper eye lobes slightly wider than width of an upper lobe (about as distant as two times width of an upper lobe in Adesmoides), connection between ocular lobes about as wide as upper eye lobe (notably narrow, with ocular lobes nearly separated in Adesmoides), and antennal tubercles moderately near at other basally (notably distant each other in Adesmoides). It also differs from Woytkowskia by the scape with cicatrix, which is absent in this genus.
Guyarolea gen. nov. can be included in the alternative of couplet “1” (Group D) from Martins & Galileo (2014a) (translated):
1. Scape without apical cicatrix; antennomere XI without modifications............................................ 2 - Scape with apical cicatrix; antennomere XI stinger-shaped.................................................... 1’ 1’(1). Upper and lower ocular lobes nearly separated; upper eye lobes notably distant each other........ Adesmoides Zajciw, 1967 - Upper and lower ocular lobes distinctly connected by wide area of ommatidia; upper eye lobes near each other............
.................................................................................... Guyarolea gen. nov.
description: Published as part of Tavakilian, Gérard L. & Santos-Silva, Antonio, 2019, New Hemilophini, Aerenicini and Calliini from French Guiana, transference and notes on Hemilophini (Coleoptera, Cerambycidae, Lamiinae), pp. 507-522 in Zootaxa 4555 (4) on page 508, DOI: 10.11646/zootaxa.4555.4.3, http://zenodo.org/record/2585299