Plateros phoupanensis 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

Plateros phoupanensis Kazantsev sp.n.

Figs 61 , 177–178 .

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: ♂ and 4 ♀♀, same label ( ICM).

DESCRIPTION. Male. Dark brown to black; pronotum and elytra orange testaceous ( Fig. 61 ).

Vertex with prominent round impression behind antennal prominence and two minute deep round excavations at its bottom. Eyes relatively large, interocular distance subequal to eye diameter. Labrum small, transverse, truncate anteriorly. Palps slender; ultimate palpomeres noticeably longer than wide, widening distally, obliquely convex and flattened at apex. Antennal sockets separated by minute lamina. Antennae long, attaining to elytral three fifths, antennomeres 3–10 ramose, with narrow stems and rami, ramus of antennomere 3 (shortest) ca. 1.3 times shorter than stem, ramus of antennomere 7 ca. 1.4 times longer than stem; antennomere 3 (stem) ca. 4 times longer than antennomere 2 and ca. 1.1 times shorter than antennomere 4; antennomeres 3–11 with scarce long erect pubescence ( Fig. 61 ).

Pronotum transverse, ca. 1.6 times as wide as long, trapezoidal, moderately bisinuate basally and strongly triangularly produced anteriorly, with straight sides, long acute posterior and blunt anterior angles. Scutellum subquadrate, parallel-sided, truncate at apex ( Fig. 61 ).

Elytra long, ca. 3.8 times longer than wide at humeri, parallel-sided, slightly dehiscent at suture; with four prominent, equally developed primary costae, considerably stronger than secondary ones; interstices with even rows of irregular subquadrate cells; pubescence dense, completely obscuring reticulation, short and decumbent ( Fig. 61 ).

Legs slender; femoris and tibiae narrow, subequal in length ( Fig. 61 ).

Aedeagus asymmetrical, semi-spiral, with narrow phallobase and contiguous phallobasal lateral plates; median lobe more or less straight, gradually widened distally, moderately twisted in distal two thirds ( Figs 177–178 ).

Female. Similar to male, but eye smaller and antennae just strongly dentate.

Length: 8.9–10.8 mm. Width (humerally): 2.0– 2.6 mm.

ETYMOLOGY. The name of the new species is derived from the type locality, Mt. Phou Pan in northeastern Laos.

DIAGNOSIS. Plateros phoupanensis sp.n. seems to be related to P. binhanus , separable by the more or less straight, gradually widening distally median lobe of the aedeagus ( Figs 177–178 ).

DISTRIBUTION. North-eastern Laos.

Figures

Figs 53–63. General view of Plateros, males: 53 — P. kabakovi; 54 — P. siniaevi sp.n.; 55 — P. abbreviatus sp.n.; 56 — P. gemellus sp.n.; 57 — P. propinquus; 58 — P. baolokensis sp.n.; 59 — P. merulus; 60 — P. macrolycoides sp.n.; 61 — P. phoupanensis sp.n.; 62 — P. leptohelix sp.n.; 63 — P. stenohelix sp.n.; 53–56, 58–63 — holotypes. Рис. 53–63. ОбЩий вид Plateros, самцы: 53 — P. kabakovi; 54 — P. siniaevi sp.n.; 55 — P. abbreviatus sp.n.; 56 — P. gemellus sp.n.; 57 — P. propinquus; 58 — P. baolokensis sp.n.; 59 — P. merulus; 60 — P. macrolycoides sp.n.; 61 — P. phoupanensis sp.n.; 62 — P. leptohelix sp.n.; 63 — P. stenohelix sp.n.; 53–56, 58–63 — голотипы.

Figs 169–188. Aedeagi of Plateros, ventrally and laterally, males: 169–170 — P. merulus; 171–172 — P. kabakovi; 173–174 — P. siniaevi sp.n.; 175–176 — P. abbreviatus sp.n.; 177–178 — P. phoupanensis sp.n.; 179–180 — P. leptohelix sp.n.; 181–182 — P. stenohelix sp.n.; 183–184 — P. baolokensis sp.n.; 185–186 — P. gemellus sp.n.; 187–188 — P. propinquus; 169–186 — holotypes. Scale: 0.5 mm. Рис. 169–188. Эдеагусы Plateros, сниЗу и сбоку, самцы: 169–170 — P. merulus; 171–172 — P. kabakovi; 173–174 — P. siniaevi sp.n.; 175–176 — P. abbreviatus sp.n.; 177–178 — P. phoupanensis sp.n.; 179–180 — P. leptohelix sp.n.; 181–182 — P. stenohelix sp.n.; 183– 184 — P. baolokensis sp.n.; 185–186 — P. gemellus sp.n.; 187–188 — P. propinquus; 169–186 — голотипы. МасштабнаЯ линейка: 0,.5 мм.