Plateros pallidimarginatus Kazantsev, 2020

Kazantsev, S. V., 2020, New species of Plateros Bourgeois from Sulawesi (Coleoptera: Lycidae), Russian Entomological Journal 29 (2), pp. 161-172 : 164

Plateros pallidimarginatus Kazantsev , sp.n.

Figs 5 , 23–24 .

MATERIAL: Holotype, ♂, Indonesia, N Sulawesi, Bogani Nani Wartabone N.P., 1550–1600 m, 29.VIII.2018, S. Young leg. ( ICM).

DESCRIPTION. Male. Dark brown to black; palps, except ultimate palpomeres, narrow pronotal margins, narrow lateral elytral margins testaceous; trochanters and bases of femora light brown ( Fig. 5 ).

Vertex with shallow impression and two relatively large round pits behind antennal prominence. Eyes large, interocular distance almost 1.2 times shorter than eye diameter. Labrum small, transverse, slightly convex anteriorly. Palps slender; ultimate palpomeres robust, elongate, widest near the middle, obliquely truncate and flattened at apex. Antennal sockets separated by minute lamina. Antennae attaining to elytral two thirds, filiform; antennomere 3 ca. 2.8 times longer than antennomere 2 and 1.4 times shorter than antennomere 4; antennomeres 3–11 with short erect pubescence ( Fig. 5 ).

Pronotum transverse, ca. 1.5 times as wide as long, trapezoidal, moderately bisinuate basally and semi-circularly produced anteriorly, with almost straight sides, long acute posteriorly produced posterior and inconspicuous blunt anterior angles. Scutellum subquadrate, almost parallel-sided, constricted before apex and medially emarginate distally ( Fig. 5 ).

Elytra long, ca. 3.7 times longer than wide at humeri, almost parallel-sided, only slightly concave at sides, with four strong, equally developed primary costae; interstices with even rows of small subquadrate cells; pubescence very short and decumbent ( Fig. 5 ).

Legs slender ( Fig. 5 ).

Median lobe of aedeagus curved and hooked distally, with two spines in proximal half, concave dorso-apical opening and barbed hook ( Figs 23–24 ).

Female. Unknown.

Length: 9.2 mm. Width (humerally): 2.1 mm.

ETYMOLOGY. The name of the new species is derived from the Latin for´with pale margins´, alluding to the coloration of its pronotum and elytra.

DIAGNOSIS. Plateros pallidimarginatus sp.n. is somewhat similar to P. milenae Tvardik et Bocák, 2001 , also with barbed hook of the median lobe of the aedeagus, easily separable by the coloration, large eyes and filiform antennae, as well as by the distinctly more curved and bearing more spines medial lobe of the aedeagus ( Figs 5 , 23–24 ).

Figures

Figs 4–6. General view of Plateros, holotypes: 4 — P. latimojongensis sp.n.; 5 — P. pallidimarginatus sp.n.; 6 — P. pangoensis sp.n.; 4–5 — males; 6 — female. Рис. 4–6. ОбЩий вид Plateros, голотипы: 4 — P. latimojongensis sp.n.; 5 — P. pallidimarginatus sp.n.; 6 — P. pangoensis sp.n.; 4–5 — самцы; 6 — самка.

Figs 23–32. Aedeagi of Plateros, holotypes, males: 23–24 — P. pallidimarginatus sp.n.; 25–26 — P. rimbaensis sp.n.; 27–28 — P. rubiginosus sp.n.; 29–30 — P. unisuturalis sp.n.; 31–32 — P. wartabonensis sp.n.; 23, 31 — dorsally; 25, 27, 29 — ventrally; 24, 26, 28, 30, 32 — laterally. Scale bars: 0.5 mm. Рис. 23–32. Эдеагусы Plateros, голотипы, самцы: 23–24 — P. pallidimarginatus sp.n.; 25–26 — P. rimbaensis sp.n.; 27–28 — P. rubiginosus sp.n.; 29–30 — P. unisuturalis sp.n.; 31–32 — P. wartabonensis sp.n.; 23, 31 — сверху; 25, 27, 29 — сниЗу; 24, 26, 28, 30, 32 — сбоку. Масштабные линейки: 0.5 мм.