Synixais mindoroensis, Barševskis, 2019

Barševskis, Arvīds, 2019, A new species of the genus Synixais Aurivillius, 1911 (Coleoptera: Cerambycidae) from Mindoro island, Philippines, Baltic Journal of Coleopterology 19 (1), pp. 51-56 : 52-55

Synixais mindoroensis sp. n.

( Fig. 1 )

Type material. Holotype, female: PHILIPPINES: Mindoro isl. /Baco, 03.2019. / Local collector leg. [white handwrited label]; HOLOTYPUS: / Synixais / mindoroensis sp. n. / A.Barševskis descr. 2019 [red handwrited label].

General distribution: Philippines: Mindoro island.

Description. Body elongated, parallel-sided, flattened, brown, with variable in size, larger and smaller smoothed spots between grey pubescence. Length: 11.5 mm, width: 3.7 mm. Head quadrangular, flattened, covered by dense grey pubescence and coarse punctures, with thin elongate line on middle wide impression between antennae. Apical margin of head concaved. Eyes bilobate, not protruding. Both lobes under antennal bases connected by very thin line. Basal elevation of antennae protruding. Cheeks wide, with very dense yellow-grey pubescence. Clypeus indistinctly visible, yellow-brown. Labrum yellow-brown, covered by yellow-grey pubescence. Mandibles narrow, sharp; laterobasal portion of mandibles covered by sparse yellow-grey pubescence. Basal antennomere dark-brown in basal and black in apical portion, antennomere 2 dark-brown, antennomeres 3 - 4 black; antenomeres 1-4 shiny, with pale, sparse pubescence, remaining an ten n omer es dar k-br own, with den se pubescence; all antennomeres with long setae between sparse pale pubescence. Labial and maxillary palpi yellow-brown.

Pronotum almost cylindrical, flattened, slightly widened before middle, yellow-brown, covered by yellow-grey pubescence, with variable in size smoothed spots between it. Pronotum with very fine microsculpture between sparse, coarse punctures. Basal angles of pronotum in distinct, small. Scutellum rounded apically, covered by pubescence. Pars stridens visible under basal margin of prothorax, bilobate apically, with very fine transverse microsculpture.

Elytra slightly impressed dorsally before middle, yellow-brown, shiny, covered by dense yellow-grey pubescence, with smoothed spots between it. Lateral portions of elytra behind shoulders, middle and before apical portions with oblique smoothed spots, and with similar spots on dorsal surface of elytra in about middle and apical portions. Middle portion of elytra along suture with many small smoothed spots. Basal portion of elytra with distinctly denser and coarser setiferous punctures as that in middle portion, covered by dark setae. Apex of elytra rounded, densely setose.

Barševskis A.

Underside of body with very dense yellow-grey pubescence,with sparse, small, smoothed spots between it.

Legs short and robust, dark-brown, covered by dense yellow-grey pubescence and many long setae. Tarsomeres black.

Male unknown.

Differential diagnosis. Based of the general shape of the body, the new species is similar to

S. willietorresi ( Fig. 2 ), but differs from it by the following: 1) body brown, more paler than that in S. willietorresi ; 2) antennae slender, almost unicolor, with very indistinct transition between brown to black, while coloration of antennae of S. willietorresi is distinctly bicolor; 3) dorsal surface of each elytron with oval large smoothed spot before apex, while apical portion of elytra of S. willietorresi with two spots, oval and elongated, located along margin; 4) different shape of dorsal spot behind the middle of elytra.

Etymology. Toponymic. The name of species is derived from the name of island, where the holotype was collected.

Figures

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

Fig. 2. Holotype of Synixais willietorresi Barševskis, 2018