Tricheops remus, Evans, Brenda & Ślipiński, Adam, 2016

Evans, Brenda & Ślipiński, Adam, 2016, Review of the genus Tricheops Newman (Coleoptera: Cerambycidae: Cerambycinae) with description of two new species from Western Australia, Zootaxa 4137 (4), pp. 569-577 : 573

Tricheops remus new species

( Fig. 2 )

Etymology. This species name is derived from the Latin noun remus , an oar, referring to the paddle shape markings on the elytra of this species.

Diagnosis. Tricheops remus can be distinguished from other members of this genus by its larger body (length 20–22 mm), tan brown body colour with paddle blade shaped darker brown marking on elytra, the elytra 5.5 times length of head ( Fig. 2 A) and the metafemur 5–6 times longer than its greatest width ( Fig. 2 A,E).

Description. Length. 20–22 mm and length 5.0 to 5.5 times longer than width ( Fig. 2 A). Dorsal and ventral surfaces bearing recumbent setae ( Fig. 2 A–B). Head. Slightly constricted behind eyes and frontoclypeal suture moderately impressed ( Fig. 2 C). Gland dispenser bearing group of stout setae ( Fig. 2 C–D). Frontal interocular index 2.0 and upper lobes separated dorsally by 2.0–2.4 times diameter of antennal socket ( Fig. 2 A, C). Number of stemmata at narrowest point of lobes (near junction with next lobe): upper lobe 8–10; median lobe 7; and lower lobe 10–11 ( Fig. 2 D). Antennal insertions separated by 2.2–2.4 times diameter of antennal foramen. ( Fig. 2 C). Antennae. In female extending past middle of elytra, but not beyond apex of elytra (male unknown) ( Fig. 2 A–B). Scape 0.5–0.7 of pronotum length and antennomere 3 about 1.0–1.1 times length of antennomere 4 ( Fig. 2 B). Prothorax. Pronotal disc with two anterior moderately raised, sharp nodules and two posterior weakly raised rounded nodules ( Fig. 2 A, D). Disc bearing medium recumbent setae only ( Fig. 2 A, D). Pterothorax. Scutellum setose and mesocoxae separated at narrowest point by 0.4 of the cavity diameter ( Fig. 2 A–B). Elytra. Length 5.5 times length of head and 4.0–4.1 times length of pronotum. Vestiture of elytra comprising of medium recumbent setae ( Fig. 2 A). Legs. Metafemur length 5–6 times greatest width ( Fig. 2 B, E). Abdomen. Ventrites with short recumbent setae. Ventrite 1 1.2–1.3 times length of ventrite 2, ventrite 5 in female 1.5 times longer than ventrite 4 and tapered toward a truncate apex ( Fig. 2 B).

Types. Holotype female: Western Australia: 3km S of Kalbarri (27°43’S, 114°12’E), 7.xi.1971 u. v. light, N. McFarland (ANIC). Paratype female: same data as the holotype (ANIC).

Biological data. Both specimens were collected at night by ultraviolet light during the month of November.

Distribution. This species is known from two specimens collected 3 km south of Kalbarri in Western Australia.

Figures

FIGURE 2. Tricheops remus n. sp. A, dorsal; B, ventral; C, frontal; D, oblique lateral; E, lateral. A, B from Ślipiński and Escalona 2016.