Eurysthea nakagomei, Botero & Heffern & Santos-Silva, 2018

Botero, Juan Pablo, Heffern, Daniel & Santos-Silva, Antonio, 2018, Two new species of Novantinoe (Disteniini, Disteniidae), two new species of Eurysthea (Elaphidiini, Cerambycinae, Cerambycidae), and new geographical records, Papéis Avulsos de Zoologia 58, pp. 1-9 : 8

Eurysthea nakagomei Botero, Heffern & Santos‑Silva, new species

( Figs. 13‑16 )

Description: Male: Integument reddish-brown; antennae lighter toward apex; each elytron with a yellow antemedian inverted macula “V” shaped and two yellow spots at apex; legs yellowish. Body with elongated sparse white erect setae.

Head: Frons short, with a transverse sulcus, minutely, densely punctate; with decumbent, abundant, golden setae and long white setae. Area between antennal tubercles with fine dense punctures, slightly carinate; with elongated, decumbent, abundant golden setae, interspersed with long sparse erect setae.Area between upper eye lobes finely sparsely punctate, smooth centrally; with some whitish elongated, erect setae, glabrous centrally. Antennal tubercles slightly elevated, rounded at apex, finely sparsely punctate. Genae finely, sparsely punctate; with decumbent, elongated, sparse golden setae at margin of ocular lobe. Gula finely punctuate, with long erect white setae. Mandibles coarsely, confluently punctate, smooth distally and toward inner side; with some short and long, moderately sparse, sub-erect yellowish-white setae (elongated setae more erect). Distance between upper eye lobes about ½ length of scape; distance between lower eye lobes in frontal view equal to length of scape. Antennae reaching elytral apex at apex of antennomere VIII. Scape slightly, gradually enlarged toward apex; finely and sparsely punctuate, smooth at apex; with decumbent, sparse, long, whitish setae, interspersed with long, erect white setae. Antennomeres III-XI with moderately long, decumbent, sparse white setae, shorter and denser toward apical antennomeres; with long, erect, white setae on inner side and at apex of each antennomere (gradually shorter, sparser toward distal segments). Antennomere III not carinate, with elongated spine at inner apex (as long as 0.29 times length of antennomere). Antennomere IV not carinate, with elongated spine at inner apex (as long as 0.28 times length of antennomere). Antennomere V-XI unarmed at apex. Antennal formula (ratio) based on antennomere III (without spine): scape = 0.58; pedicel = 0.11; IV = 0.75; V = 0.79; VI = 0.75; VII = 0.78; VIII = 0.71; IX = 0.70; X = 0.64; XI = 0.79.

Thorax: Prothorax longer than wide (1,17 times), sides curved, unarmed; finely sparsely punctate except smooth, transverse band at anterior margin and on gibbosities; with short, abundant, golden setae (not obscuring integument), except on transverse band at anterior margin and on gibbosities, interspersed with elongated erect setae. Pronotum with five gibbosities, slightly elevated: two sub-circular, placed at each side just after middle; two sub-circular, placed on each side of posterior quarter; and one longitudinal from midlength to posterior quarter. Prosternum coarsely densely punctuate; with some sparse moderately elongated white setae. Prosternal process subparallel, equal to 0.28 times the procoxal cavity width. Mesoventrite, mesepimeron and mesanepisternum with short, decumbent, dense golden setae (slightly distinct depending on angle of light) interspersedwithmoderatelyshort,sub-erectyellowish-white setae. Mesoventral process emarginate at apex, equal to 0.6 times the mesocoxal cavity. Metanepisternum with short, decumbent, abundant golden setae (almost indistinct depending on angle of light) on anterior and lateral margins, glabrous on central region; interspersed with long, erect, white setae (more erect, abundant basally). Metaventrite finely punctate, sparser and finer toward median region and posterior margin; with short, decumbent, sparser golden setae; with some long, sub-erect, yellowish-white setae throughout.

Elytra: Moderately coarsely,abundantly punctate, sparser toward apex, on apex smooth; with short decumbent, thick, white setae throughout, interspersed with elongated erect sparse setae; apex obliquely truncate, with elongated spine at outer angle, sutural angle unarmed.

Legs: Apices of meso- and metafemora rounded.

Abdomen: Ventrites smooth; with short decumbent, thick, white setae laterally, central region glabrous, interspersed with some elongated erected setae. Apex of ventrite V curved.

Dimensions in mm (male): Total length, 10.3; prothorax length, 1.9; anterior width, 1.6; posterior width, 1.5; largest prothoracic width, 1.7; humeral width, 1.7; elytral length, 6.9.

Type Material: Holotype male from Colombia, Valle del Cauca : Municipio de la Cumbre (Vereda Chicoral, 03°34’26”N, 76°34’56”W), 22-26.III.2017, Sinyaev col. ( MZSP).

Etymology: The new species is in honor of Nakagome Masaji ( Japan), a renowned collector of insects. He is a personal friend of Anton Olegovich Kozlov ( Russia), who sent and donated the holotype for MZSP collection, and requested the name as a special favor, to expresses his thankfulness and respect to him.

Remarks: By its general appearance, Eurysthea nakagomei is similar to E. cribripennis (Bates, 1885) , but differs by the prothorax unarmed laterally (with antemedian tubercle and lateral spine in E.cribripennis ), scutellum nearly glabrous (covered with dense yellowish pubescence in E. cribripennis ), and body with sparse moderately long white setae (in E. cribripennis the body is covered with denser and longer yellowish setae). Among the species of Eurysthea with the prothorax unarmed (E. barsevskisi Botero & Santos-Silva, 2017; E. nearnsi Botero & Santos-Silva, 2017; E. parva Martins & Galileo, 2013; E. rotundicollis (Martins, 1995)) , the new species differs from all of them by the prothorax with sparse and fine pubescence (denser and obscuring the integument in these species), and the scutellum nearly glabrous (densely covered with yellowish pubescence in these species).The new species differs from E. barsevskisi Botero & Santos-Silva, 2017; E. nearnsi Botero & Santos-Silva, 2017 ; and E.rotundicollis (Martins, 1995) by the yellow anterior and posterior maculae being interrupted (continuous in those species).

Figures

Figures 9-16: (9-12) Eurysthea nogueirai sp. nov., holotype, female: (9) dorsal view; (10) lateral view; (11) ventral view; (12) detail of head, dorsal view. (13-16) Eurysthea nakagomei sp.nov.,holotype,male:(13) detail of head,dorsal view;(14) dorsal view;(15) lateral view;(16) ventral view.