Plateros huaphanensis Kazantsev, 2021

Kazantsev, S. V., 2021, A review of Plateros Bourgeois, 1879 of Indochina (Coleoptera: Lycidae), Russian Entomological Journal 30 (1), pp. 47-73 : 60

Plateros huaphanensis Kazantsev sp.n.

Figs 35 , 133–134 .

MATERIAL: Holotype, ♂, NE Laos, Hua Phan prov., Ban Saleui, Phou Pan Mt. , ~ 20°12´N, 104°01´E, 1300–1900 m, 1– 31.05.2011, C. Holzschuh leg. ( ICM); paratypes, 2 ♂♂ and 3 ♀♀, same label ( ICM).

DESCRIPTION. Male. Black; pronotal margins in part narrowly light brown ( Fig. 35 ).

Vertex with conspicuous round impression behind antennal prominence and two separated minute deep excavations at its bottom. Eyes relatively small, interocular distance ca. 1.1 times greater than eye diameter. Labrum small, transverse, convex anteriorly. Palps slender; ultimate palpomeres slightly longer than wide, almost parallel-sided, obliquely truncate and flattened at apex. Antennal sockets separated by minute lamina. Antennae relatively long, attaining to elytral two thirds, strongly dentate; antennomere 3 ca. 2.5 times longer than antennomere 2 and ca. 1.4 times shorter than antennomere 4; antennomeres 3–11 with short erect pubescence ( Fig. 35 ).

Pronotum transverse, ca. 1.2 times wider than long, with almost straight sides, slightly bisinuate basally and semi-circularly produced anteriorly, with small acute, minutely protruding laterally posterior and blunt rounded anterior angles. Scutellum subquadrate, parallel-sided, truncate at apex ( Fig. 35 ).

Elytra long, ca. 3.5 times longer than wide at humeri, parallel-sided; with four almost equally developed primary costae, not significantly different from secondary ones; interstices with even rows of irregular roundish cells; pubescence relatively scarce, short and decumbent ( Fig. 35 ).

Legs slender; femoris and tibiae narrow, subequal in length ( Fig. 35 ).

Aedeagus slightly asymmetrical, with narrow phallobase and contiguous phallobasal lateral plates; median lobe slender, almost straight, somewhat widened before apex ( Figs 133–134 ).

Female. Similar to male, but eyes somewhat smaller and antennae distinctly less dentate.

Length: 5.0– 6.4 mm. Width (humerally): 1.2–1.6 mm.

ETYMOLOGY. The new species is named after the province in Laos where the type series was collected.

DIAGNOSIS. Plateros huaphanensis sp.n., being similar in the shape of the aedeagus to P. planatus , may be distinguished from it by the straighter and slenderer median lobe of the aedeagus ( Figs 133–134 ), as well as by the different habitus and coloration ( Fig. 35 ).

DISTRIBUTION. North-eastern Laos.

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.