Desisopsis lanlayroni, Barševskis, 2016

Barševskis, Arvīds, 2016, New Species Of Acronia Westwood, 1863 And Dasisopsis Hüdepohl, 1995 (Coleoptera: Cerambycidae) From The Philippines, Acta Biologica Universitatis Daugavpiliensis 16 (1), pp. 7-13 : 10-12

Desisopsis lanlayroni sp. nov.

( Fig. 3A, B , 4 )

Type material. Holotype, male: Philippines: Leyte Isl., Mahaplag , 06.2016, local collector leg.

Paratype: Female, Philippines: Leyte Isl., Mahaplag , 06.2016, local collector leg .

General distribution: Philippines: Samar Island ( Fig. 4 ).

Description. Body wide, black, non-glossy, with very thick layer of brown fine hairs, surface dark brown, with white irregular spots. Length: 17.0 – 19.0 mm, width: 7.0 – 7.9 mm.

Head large, broad; frons subquadrate, with almost parallel sides, rugose; bases of antennae flat. Eyes small, bilobed. Surface of head matt, with coarse punctures. Median part of headwith longitudinal very thin line beginning frontally near clypeus and extending base of head. Surface of head behind eyes with two white spots continuated on lateral parts of pronotum as white lines. Labrum pubescent, with dark brown hairs and punctures. Clypeus brown, narrow, transverse, shiny, with delicate pubescence. Mandible shiny, elongate, relatively narrow and sharp, with very thin longitudinal wrinkles in lateral sides of basis. Antennae black, relatively short, covered by dense golden-gray pubescence, reaching apex of elytra in males and apical third in females; antennomere 1 thickened, with sparse punctures between pubescence; antennomere 3 shorter than following antennomere; antennomeres 1-7 with inner fringe of fine setation.

Pronotum wide, subcylindrical, with uneven surface, covered by dark brown thin pubescence; without acute, extended basal angles. Pronotum distinctly wider than long. Anterior border of pronotum fine, with lateral margination; posterior border sinuous, completely margined. Dorsal disc of pronotum prominent, with fine median longitudinal line and sparse punctures. Basal and lateral parts of pronotum with white wide bands, convergent anteriorly. Brown part of dorsal disc of pronotum subtriangular. Scutellum relatively large, apically rounded, covered with dark-brown thin pubescence.

Elytra short, wide, subparallel, slightly narrowing at apical third toward rounded apex, covered with very thick dark brown opaque pubescence with five irregular white spots. Dorsal portion of elytra between scutellum and shoulders with elongated irregular U-shaped spot, and with thin transverse line behind it, with wide irregular transverse band in front of apex and with apical irregular spot along suture -; posthumeral portions of each elytron arched spot.

Each elytron with low well developed and visible humps behind shoulders, punctated. Apical part of elytra along suture with narrow flat presutural line extendingalmost to scutellum.Apex of elytra rounded, without visible projections. Epipleurae covered by brown tomentum.

Upper side of body black, covered by dark brown thin pubescence, with several spots of white pubescence. Legs black, relatively short, robust, covered with dark brown pubescence. Tarsomeres black, with yellow brown pubescence on upper sides.

Differential diagnosis. The new species is closely related with D. magallanesorum Vives, 2012 ( Fig.3C ), but differs from it by following characters: 1) punctures on body surface less coarse, more sparse; 2) white band on basal part of pronotum is well developed dorsally (white band on basal part of pronotum of D. magallanesorum is visible laterally, with wide dorsal interruption); 3) brown part of dorsal disc of pronotum is subtriangular (it is not rounded in D. magallanesorum ); 4) shape of white spots: basal spot U-shaped, not reaching the suture ( D. magallanesorum with C-shaped spot, reaching suture; 5) apical spots more irregular, with thin transverse white line between basal and well developed apical spots, but by D. magallanesorum and D. maculata thin line between spots absent.

The new species can be distinguished from D. maculata Hüdepohl, 1995 ( Fig.3D ) with: 1) more less coarse punctures of the surface of the body; 2) brown part of subtriangular dorsal disc of pronotum ( D. maculata with rounded dorsal disc of pronotum); 3) basal spot of elytra U-shaped (elytra of D. magallanesorum with four basal spots).

Etymology. This species is named after Lan Layron ( Philippines: Calumpit), friend and colleague of Mari Felipe ( Philippines: Calumpit) who kindly donated type specimens for this study.

Figures

Fig. 3. D. lanlayroni sp. nov. [A – holotype; B – paratype], D. magallanesorum Vives, 2012 [C – holotype (Vives 2012)] and D. maculata Hüdepohl, 1995 [D – holotype (Hüdepohl, 1995)].

Fig. 4. Distribution map of D. lanlayroni sp. nov.