Eranina tomentilla, Mehl, Ole, Galileo, Maria Helena M., Martins, Ubirajara R. & Santos-Silva, Antonio, 2015

Mehl, Ole, Galileo, Maria Helena M., Martins, Ubirajara R. & Santos-Silva, Antonio, 2015, Four new species of Cerambycidae (Coleoptera) from Paraguay, ZooKeys 507, pp. 31-40 : 32

Taxon classification Animalia Coleoptera Cerambycidae

Eranina tomentilla sp. n. Figs 1, 2, 3

Description.

Integument black; the following parts orange: frons, most of clypeus, most of lateral side of mandibles, maxillary palpomeres I–III, base of maxillary palpomere IV, ventral side of head, area under lower eye lobes, base of antennomere III, base and nearly all ventral side of antennomere IV, base of antennomeres V–VII, large central “V-like” area on pronotum, parts of lateral side of prothorax, lateral longitudinal band on basal half of elytra (reaching lateral margin on basal fourth), basal two-thirds of profemora, basal half of mesofemora, basal third of metafemora; the following brown-yellowish: vertex, about central two-fourths of dorsal side of antennomere III; parts of lateral side of prothorax; tarsal claws; brown longitudinal band on basal half of elytra, between orange band and black area; ventral side of scape dark-brown.

Head. Frons transverse, coarse, abundantly punctate (most punctures obliterated by pubescence); pubescence yellow, dense, mixed with long, sparse setae. Coronal suture well-marked from clypeus to anterior edge of prothorax. Area between antennal tubercles depressed, coarse punctate; pubescence sparser than on anterior region of frons; laterally with long setae. Antennal tubercles with yellow pubescence on base, dark-brown on remaining surface; with long, abundant setae. Vertex with yellow, dense pubescence. Area behind lower eye lobes coarse, abundantly punctate; pubescence, moderately dense on narrow band close to eyes, very sparse towards anterior edge of prothorax. Genae with yellow pubescence, mixed by long, sparse setae. Distance between upper eye lobes equal to 0.2 times the length of scape; distance between lower eye lobes, in frontal view, equal to 0.6 times the length of scape. Antennae as long as 1.2 times the elytral length; almost reaching elytral apex; scape, pedicel and antennomere III with abundant, moderately long erect setae, mixed with also abundant very long setae throughout; antennomere IV with setae as on III, but sparser; antennomeres V–XI dorsally with sparse, moderately long setae, ventrally with very long, sparse setae; antennal formula based on antennomere III: scape = 0.77; pedicel = 0.14; IV = 0.44; V = 0.25; VI = 0.23; VII = 0.21; VIII = 0.21; IX = 0.19; X = 0.19; XI = 0.21.

Thorax. Prothorax cylindrical, transverse. Pronotum moderately coarse, abundantly punctate; pubescence yellow on area with orange integument, directed towards center, forming elongated tuft; on each side of anterior half, spot of yellowish-white pubescence; remaining surface with very short, slightly conspicuous brownish-yellow pubescence; with long, sparse setae. Lateral sides of prothorax moderately coarse, abundant punctate; pubescence brownish-yellow, dense on areas with light integument, brown on areas with dark integument. Metasternum laterally pubescent, very sparsely pubescent towards middle. Elytra: coarse, abundantly punctate on basal half, gradually finer, sparser punctate towards apex; pubescence dense, very conspicuous on area with orange integument, dark-brown, very short on remaining surface; with moderately long, abundant erect setae throughout; apex individually rounded. Legs: femora pubescent, with long, moderately abundant setae (mainly ventrally).

Abdomen. Ventrites I–IV laterally pubescent, distinctly sparser towards center, interspersed with long, sparse setae. Ventrite V trapezoidal, 1.5 times as long as IV, with long sparse setae, distinctly denser near apex, laterally pubescent; apex rounded.

Type material.

Holotype female: PARAGUAY, San Pedro: La Florida (56°59'W, 24°29'S), 27.IV.2012, U. Drechsel col. (MZSP).

Dimensions in mm (female).

Total length, 8.0; length of prothorax at center, 1.2; anterior width of prothorax, 1.3; posterior width of prothorax, 1.4; humeral width, 1.9; elytral length, 5.8.

Etymology.

Latin, tomentum = pubescence consisting of moderately long, soft, entangled hairs; illa = suffix, added to feminine nouns to denote a diminutive form. Relating to the hairy look of the species.

Remarks.

Eranina tomentilla sp. n. differs from Eranina argentina (Bruch, 1911) as follows (comparison with syntype female deposited at MZSP): distance between upper eye lobes equal to 0.2 times the length of scape; setae on antennomere III distinctly more abundant; antennomere III 2.2 times longer than IV; basal integument of antennomeres V–VII orange. In Eranina argentina the distance between upper eye lobes is equal to 0.35 times length of scape, the setae on antennomere III are sparser (mainly the shorter ones), antennomere III is 1.7 times as long as IV, and antennomeres V–VII are entirely dark. It can be separated from females of Eranina porangaba (Galileo & Martins, 1998) by antennae not reaching elytral apex (surpassing in Eranina porangaba ), and by antennomere III longer than twice length of IV (distinctly shorter than twice the length of IV in Eranina porangaba ).

Eranina tomentilla can be included in the alternative of couplet “16”, from Martins and Galileo (2014) (translated; couplet 15 modified):