Synixais luzonica, Barševskis, 2019

Barševskis, Arvīds, 2019, A New Species And A New Record Of The Genus Synixais Aurivillius, 1911 (Coleoptera: Cerambycidae), Acta Biologica Universitatis Daugavpiliensis 19 (1), pp. 95-98 : 96-97

Synixais luzonica sp. n.

( Fig. 1 )

Type material. Holotype, female: PHILIPPINES: Luzon isl. / Quirino, Madela , / 04.2017, local collector leg. [white printed label] ; HOLOTYPUS: / Synixais / luzo nica sp. n. / A.Barševskis det. 2019 [red printed & handwrited label]. The holotype was deposited in DUBC .

General distribution: Philippines: Luzon island.

Description. Body elongate, parallel-sided, flattened, brown, dorsolateral portions of elytra with three smooth spots between grey and yellow-brown pubescence. Length: 11.3 mm, width: 4.1 mm.

Head quadrangular, with slightly tapered apical portion and slightly concaved apical margin, trapezoidal, covered by dense, yellow-brown pubescence and coarse punctures, without thin line in middle part and impression between antennae. Eyes bilobate, not protruding. Both lobes under antennal bases connected by very thin line. Basal elevation of antennae slightly protruding. Cheeks wide, with very dense yellow-brown pubescence. Clypeus indistinctly visible, yellow-brown, with yellow-brown pubescence. Labrum yellow-brown, with very fine pubescence. Mandibles sharp; laterobasal portion of mandibles with sparse yellow-brown pubescence. Antennae slender; antennomeres with long setae between sparse pubescence; basal antennomere dark-brown, other antennomeres brown, with dense pubescence. Segments of labial and maxillary palpi dark-brown.

Pronotum almost cylindrical, flattened, slightly widened basally, dark-brown, covered with yellow-brown pubescence, without smoothed spots between it. Pronotum with very fine microsculpture between sparse, coarse punctures. Basal angles of pronotum indistinct, small. Scutellum rounded apically, shiny in middle, with very fine lateral pubescence. Pars stridens under basal margin of pronotum not visible.

Type deposited: USNM ( Fig. 3 ) ( Lingafelter et al 2014) .

References: Breuning, 1940: 421; Randon & Breuning, 1970: 411; Lingafelter & al., 2014: 325; Barševskis 2018: 308; Barševskis, 2019: 55.

Elytra slightly impressed dorsally before middle, brown, shiny, with dense yellow-brown and yellow-grey pubescence. Lateral portions of each elytron with three smooth spots between pubescence. Basal portion of elytra with distinctly denser and coarser setiferous punctures as that in middle portion. Each elytron with distinct protruding hump behind shoulders. Apex of elytra rounded.

Underside of body with very dense yellow-brown pubescence.

Legs short and robust, dark-brown, with dense yellow-brown pubescence. Tarsomeres darkened.

Male unknown.

Differential diagnosis. Based on the general shape of the body, the new species is similar to S. mindoroensis Barševskis, 2019 ( Fig. 2 ), but differs from it by the coloration: each elytron of a new species with three comparatively large smooth spots, with yellow-brown pubescence and brown antennae; elytra of S. mindoroensis with a lot of variable small smooth spots, yellow-grey pubescence and darkened antennae.

Etymology. Toponymic. The specific epithet is the latinized name of island, where the specimen was collected.

Figures

Fig. 1. Holotype of Synixais luzonica sp. n.

Fig. 3. Holotype of Synixais strandi Breuning, 1940 (A dorsal view, B – labels) (Lingafelter et al. 2014).

Fig. 2. Holotype of Synixais mindoroense Barševskis, 2019.