Platerodrilus (s. str.) kambanganus 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 : 446-448

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

( Figs 26 , 36 , 47, 48 )

Material. Holotype ♂, Indonesia: C Java, south coast, Nusa Kambangan Is., 2.VI.1997, S. Rossomakhov leg. ( ICM).

Description. Male. Dark brown; antennomeres 1–3, head, pronotum, scutellum, elytra in proximal two thirds and tarsomere 5 testaceous ( Fig. 26 ).

Vertex flat and minutely sparsely punctate behind antennal prominence, with scarce suberect pubescence. Eyes small, interocular distance ca. 2 times greater than eye diameter. Labrum small, transverse, slightly convex 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 attaining to elytral two thirds, attenuate distally, slightly compressed in antennomeres 4–7; antennomeres 2 and 3 short, about as long as wide, subequal in length, together ca. 2.25 times shorter than antennomere 4; antennomeres 4–11 with dense, relatively short, almost erect pubescence and small roundish scales ( Fig. 26 ).

Pronotum transverse, ca. 1.8 times wider than long, semicircular, slightly bisinuate at posterior margin, with obsolete anterior and short almost right posterior angles; sides explanate, with relatively small and scarce punctuation. Scutellum (postnotal plate of mesonotal scutellum) subquadrate, almost parallel-sided, rounded at apex ( Fig. 26 ).

Elytra long, ca. 3 times longer than wide at humeri, slightly widening distally; with four equally developed primary costae; interstices with irregular punctuation; pubescence dense, short and decumbent, almost completely obscuring elytral structure ( Fig. 26 ).

Legs slender; femoris and tibiae straight and relatively narrow, subequal in length ( Fig. 26 ). Abdominal terminalia relatively broad; penultimate tergite medially relatively narrow, with median triangular incision distally; terminal ventrite moderately long, its distal portion attenuate ( Fig. 36 )

Male genitalia with subquadrate, proximally noticeably incised phallobase; median lobe narrow, not widening at apex, moderately long, conspicuously widened proximally and moderately gradually curved in lateral aspect; parameres together, without proximal apodemes, ca. 1.4 times wider than long, with narrow non-sclerotised processes, ca. 2 times longer than parameres; processes bearing setae with short hairs, more numerous at apices; semihemispherical bulge on outer ventral surface with numerous dense short thorns; proximal apodemes long, hooked at apex ( Figs 47, 48 ).

Length: 6.1 mm. Width at humeri: 1.6 mm.

Female. Unknown.

Etymology. Platerodrilus kambanganus sp. nov. is named after the type locality.

Diagnosis. Platerodrilus kambanganus sp. nov. appears to be similar to the Javanese P. reductus Pic, 1937 , also with bicoloured elytra and orange testaceous head, but is separable by the orange testaceous antennomeres 1–3 and elytra widened not in the middle, but distally ( Fig. 26 ). The new species may be distinguished from P. ijenensis Masek et Bocak, 2014 , also from Java and also with bicoloured elytra ( Masek & Bocak, 2014), by the orange testaceous head, semi-circular pronotum and only distal third of elytra darkened ( Fig. 26 ), as well as by the longer parameres and shorter median lobe of the aedeagus ( Figs 47, 48 ).

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.