Plateros planatomimus Kazantsev, 2021

Kazantsev, S. V., 2021, A review of Plateros Bourgeois, 1879 of Indochina (Coleoptera: Lycidae), Russian Entomological Journal 30 (1), pp. 47-73 : 66-67

Plateros planatomimus Kazantsev sp.n.

Figs 32 , 139–140 .

MATERIAL: Holotype, ♂, NE Thailand: Loei pr., Phu Kradung N.P., 16°53´N, 101°47´E, 1300 m, 11–15. V.1999, D. Hauck leg. ( ICM); paratypes: ♂, S Vietnam, N Dongnai, Nam Cat Tien N.P., at light, 19.V–18.VI.2005, D. Fedorenko leg. ( ICM).

DESCRIPTION. Male. Dark brown to black; pronotum, scutellum and elytra testaceous ( Fig. 32 ).

Vertex with two distinct elongate narrow impressions behind antennal prominence. Eyes large, interocular distance ca. 1.2 times shorter than eye diameter. Labrum small, transverse, truncate anteriorly. Palps slender; ultimate palpomeres considerably longer than wide, narrow, almost parallel-sided in proximal two thirds, obliquely convex and flattened at apex. Antennal sockets separated by minute lamina. Antennae attaining to elytral middle, antennomeres 3–10 flattened, distinctly pilose; antennomere 3 ca. 5 times longer than antennomere 2 and ca. 1.4 times shorter than antennomere 4; antennomeres 3– 11 with dense short erect pubescence ( Fig. 32 ).

Pronotum transverse, ca. 1.25 times as wide as long, with slightly concave sides, moderately bisinuate basally and semi-circularly produced anteriorly; with short acute, only slightly protruding laterally posterior and rounded anterior angles. Scutellum transverse, narrowing distally, minutely emarginate at apex ( Fig. 32 ).

Elytra long, ca. 3.6 times longer than wide at humeri, slightly widening from humeri; with four almost equally developed primary costae, not significantly different from secondary ones; interstices with even rows of small subquadrate cells; pubescence dense, short and decumbent, obscuring reticulation ( Fig. 32 ).

Legs slender; femoris and tibiae narrow, subequal in length ( Fig. 32 ).

Aedeagus asymmetrical, with narrow phallobase and approximate, but not contiguous phallobasal lateral plates; median lobe straight and narrow, narrowed before proximal nodosity, with dentate distal lobes and only slightly curved apical portion ( Figs 139–140 ).

Female. Unknown.

Length: 7.8–7.9 mm. Width (humerally): 1.8–1.9 mm.

ETYMOLOGY. The name of the new species is derived from the species name ‘ planatus ’ and the Latin for ‘mime’, alluding to the similarity of these two taxa.

DIAGNOSIS. Plateros planatomimus sp.n. may be distinguished from the similar-looking P. planatus Waterhouse, 1879 by the distinctly more pilose antennae and more elongate and rounded anteriorly pronotum ( Fig. 32 ), as well as by the more elongate aedeagus, narrowed before proximal nodosity, with dentate distal lobes and less curved apical portion ( Figs 139–140 ).

DISTRIBUTION. Vietnam, Thailand, 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.