Platerodrilus (s. str.) gorbunovi Kazantsev, 2021

Kazantsev, Sergey V., 2021, New and little known taxa of neotenic lyropaeine net-winged beetles (Coleoptera Lycidae), Zootaxa 4965 (3), pp. 437-460 : 445-446

Platerodrilus (s. str.) gorbunovi Kazantsev , sp. nov.

( Figs 24, 25 , 34, 35 , 45, 46 )

Material. Holotype ♂, W Malaysia, Selangor, [Genting Highlands], Gohtong Jaya , 03°24’N 101°46’E, 1000 m, 25–30.IV.2011, O. Gorbunov leg. ( ICM).

Description. Male. Body dark brown; head reddish brown; pronotum, scutellum and elytral proximal two thirds dark red; head ventrally in anterior portion, apices of coxae and bases and apices of trochanters whitish yellow; elytral distal third black, obliquely ceding to dark red at suture ( Figs 24, 25 ).

Vertex flat and minutely sparsely punctate behind antennal prominence, with scarce suberect pubescence. Eyes relatively small, interocular distance ca. 1.6 times greater than eye diameter. Labrum small, transverse, slightly concave anteriorly. Mandibles as long as maxillary palps. Maxillary and labial palps slender; terminal palpomeres considerably longer than wide, glabrous and pointed at apex. Antennal sockets transverse, separated by narrow lamina. Antennae short, attaining only to elytral two fifths, filiform, cylindrical, relatively robust, noticeably attenuate distally; antennomeres 2 and 3 short, about as long as wide, subequal in length, together ca. 1.5 times shorter than antennomere 4; antennomeres 4–11 with dense, margin, glabrous, with rounded anterior and pronounced acute posterior angles; sides explanate, with relatively large and scarce punctuation. Scutellum (postnotal plate of mesonotal scutellum) moderately long, almost erect pubescence and small roundish scales ( Figs 24, 25 ).

Pronotum transverse, about twice as wide as long, semi-circular, slightly bisinuate at posterior elongate, narrowing distally, bulging, rounded at apex ( Figs 24, 25 ).

Elytra narrow, long, ca. 3.75 times longer than wide at humeri, almost parallel-sided; with four equally developed primary costae, not much different from secondary ones; interstices mostly with two irregular rows of small roundish cells; pubescence dense, short and decumbent, almost completely obscuring elytral structure ( Figs 24, 25 ).

Legs slender; femoris and tibiae straight and narrow, subequal in length ( Figs 24, 25 ).

Abdominal terminalia long and narrow; penultimate tergite medially narrowed, with small median triangular incision distally; terminal ventrite long, its distal portion attenuate and proximal strut narrow, somewhat widened distally and broadly emarginate at apex ( Figs 34, 35 )

Male genitalia with slightly elongate, triangularly proximally incised phallobase; median lobe narrow, moderately long and straight, conspicuously widened proximally in lateral aspect; parameres together ca. 1.2 times longer than wide, with brush of dense bristles on outer ventral surface and two pairs of elongate proximal apodemes extending almost vertically into phallobase ( Figs 45, 46 ).

Length: 8.3 mm. Width at humeri: 1.8 mm.

Female. Unknown.

Etymology. Platerodrilus gorbunovi sp. nov. is named after Lepidoptera specialist Dr. Oleg Gorbunov (Moscow), who collected the type specimen.

Diagnosis. Platerodrilus gorbunovi sp. nov. is readily distinguishable from P. atronotatus Pic, 1943 , the only other Platerodrilus from Peninsular Malaysia with brush of dense bristles on parameres by the red pronotum and narrow cylindrical antennomeres 3 and 4 ( Figs 24, 25 ); it may be distinguished from P. ngi Masek et Bocak, 2014 , known from Singapore and the isle of Tioman and also with setose parameres of the aedeagus, by the shorter antennae with cylindrical antennomeres, including antennomeres 4–6, more transverse pronotum, with rounded anterior margin and obsolete anterior angles, and considerably longer elytra ( Figs 24, 25 ).

Figures

FIGURES 22–27. General view and details of Platerodrilus, males: 22–23—P. (s. str.) brastagicola sp. nov.; 24–25—P. (s. str.) gorbunovi sp. nov.; 26—P. (s. str.) kambanganus sp. nov.; 27—P. (Duliticola) svetae; 22, 24–26—general view; 23—anterior part of body; 27—head; 22–26—holotypes; 27—paratype; 22–26—dorsal view; 27—anterior view. Scale bars: 2 mm.

FIGURES 34–42. Details of Platerodrilus, males: 34–35—P. (s. str.) gorbunovi sp. nov.; 36—P. (s. str.) kambanganus sp. nov.; 37–38—P. (Duliticola) svetae; 39—P. (D.) strbai; 40—P. (D.) berastagiensis sp. nov.; 41—P. (Zhelongia) grootaerti; 42—P. (Zh.) holynskae; 34–36, 38–40, 42—holotypes; 37, 41—paratypes; 37, 41—hind wing; 34–36, 38–40, 42—terminal abdominal segments; 34, 36, 38–40,—dorsal view; 35, 37, 41—ventral view; 42—lateral view. Scale bars: 2 mm.

FIGURES 43–48. Aedeagi of Platerodrilus, holotype males: 43–44—P. (s. str.) brastagicola sp. nov.; 45–46—P. (s. str.) gorbunovi sp. nov.; 47–48—P. (s. str.) kambanganus sp. nov.; 47—dorsal view; 43, 45—ventral view; 44, 46, 48—lateral view. Scale bars: 0.5 mm.