Plateros xalinhensis Kazantsev, 2021

Kazantsev, S. V., 2021, A review of Plateros Bourgeois, 1879 of Indochina (Coleoptera: Lycidae), Russian Entomological Journal 30 (1), pp. 47-73 : 72-73

Plateros xalinhensis Kazantsev , sp.n.

Figs 36 , 135–136 .

MATERIAL: Holotype, ♂, [N] Vietnam, Hoa Binh Prov., Mai Chan Distr., Xa Linh, 1120 m, 20°44´N 104°55´E, 23–24.IV.2002, S. Belokobylsky leg. ( ICM); paratype, ♀, same label; paratype, ♀, [N] Vietnam, Hoa Binh Prov., Mai Chan Distr. , Pa Co, 1100–1200 m, 20°45´N 104°54´E, 27–28.IV.2002, S. Belokobylsky leg. ( ICM and ZIN).

DESCRIPTION. Male. Dark brown to black; antennomere 2 light brown; elytral vestiture dark red ( Fig. 36 ).

Vertex with conspicuous roundish impression behind antennal prominence and two deep minute excavations at its bottom. Eyes small, interocular distance ca. 1.3 times greater than eye diameter. Labrum small, transverse, almost truncate anteriorly.Palps slender; ultimate palpomeres somewhat longer than wide, slightly widening distally, obliquely truncate and flattened at apex. Antennal sockets separated by minute lamina. Antennae attaining to elytral three fifths, pilose; antennomere 3 ca. 3 times longer than antennomere 2 and ca. 1.3 times shorter than antennomere 4; antennomeres 3–11 with moderately long sub-erect pubescence ( Fig. 36 ).

Pronotum transverse, ca. 1.7 times wider than long, trapezoidal, slightly bisinuate basally and noticeably semi-circularly produced anteriorly, with inconspicuous acute posterior and noticeable blunt anterior angles. Scutellum transverse, parallel-sided, truncate at apex ( Fig. 36 ).

Elytra long, ca. 3.4 times longer than wide at humeri, parallel-sided; with four almost equally developed primary costae, not much different from secondary ones; interstices with even rows of subquadrate cells; pubescence relatively scarce, short and decumbent ( Fig. 36 ).

Legs slender; femoris and tibiae narrow, subequal in length ( Fig. 36 ).

Aedeagus asymmetrical, with narrow phallobase and contiguous phallobasal lateral plates; median lobe slender, almost straight, slightly gradually narrowed distally, bent in distal half and somewhat widened before apex ( Figs 135– 136 ).

Female. Similar to male, but eyes somewhat smaller and antennae slightly shorter and somewhat less pilose.

Length: 5.3–7.0 mm. Width (humerally): 1.4–1.6 mm.

ETYMOLOGY. The name of the new species is derived from the locality where the type series was collected.

DIAGNOSIS. Plateros xalinhensis sp.n. may be distinguished from the somewhat resembling it in the shape of the aedeagus P. planatus by the more robust and straight, with less widened distally median lobe ( Figs 135–136 ), as well as by the different body form and coloration ( Fig. 36 ).

DISTRIBUTION. Northern Vietnam.

Figures

Figs 29–40. General view of Plateros, holotype males: 29 — P. chinensis; 30 — P. nonus; 31 — P. cinis; 32 — P. planatomimus sp.n.; 33 — P. faber; 34 — P. raotensis sp.n.; 35 — P. huaphanensis sp.n.; 36 — P. xalinhensis sp.n.; 37 — P. sarmentosus sp.n.; 38 — P. tamdaoensis sp.n.; 39 — P. macroimpressus sp.n.; 40 — P. magnicauda sp.n. Рис. 29–40. ОбЩий вид Plateros, голотипы, самцы: 29 — P. chinensis; 30 — P. nonus; 31 — P. cinis; 32 — P. planatomimus sp.n.; 33 — P. faber; 34 — P. raotensis sp.n.; 35 — P. huaphanensis sp.n.; 36 — P. xalinhensis sp.n.; 37 — P. sarmentosus sp.n.; 38 — P. tamdaoensis sp.n.; 39 — P. macroimpressus sp.n.; 40 — P. magnicauda sp.n.

Figs 129–144. Aedeagi of Plateros, ventrally and laterally, holotype males: 129–130 — P. tamdaoensis sp.n.; 131–132 — P. raotensis sp.n.; 133–134 — P. huaphanensis sp.n.; 135–136 — P. xalinhensis sp.n.; 137–138 — P. macrolycoides sp.n.; 139–140 — P. planatomimus sp.n.; 141–142 — P. macroimpressus sp.n.; 143–144 — P. magnicauda sp.n. Scale: 0.5 mm. Рис. 129–144. Эдеагусы Plateros, сниЗу и сбоку, голотипы, самцы: 129–130 — P. tamdaoensis sp.n.; 131–132 — P. raotensis sp.n.; 133–134 — P. huaphanensis sp.n.; 135–136 — P. xalinhensis sp.n.; 137–138 — P. macrolycoides sp.n.; 139–140 — P. planatomimus sp.n.; 141–142 — P. macroimpressus sp.n.; 143–144 — P. magnicauda sp.n. МасштабнаЯ линейка: 0,5 мм.