Mimoplatycis perkovskyi Kazantsev 2025, sp. nov.
Year: 2025
Type: other
Abstract: † Mimoplatycis perkovskyi Kazantsev sp. nov. (Figs 3, 4A) Material: Holotype, ♂, specimen UA-2286, Rovno amber, Late Eocene, « Mimoplatycis notha, Kazantsev det., 2014.» (SIZK). Description. Adult male. Dark brown to black; antennomeres 1, 2 and basal fourth of antennomere 3, palps, except ultimate palpomere, and legs, except hind coxae, trochanters and femurs, light brown. Head transverse, slightly wider than anterior pronotal margin. Eye small, interocular distance ca. 2 times greater than eye diameter. Maxillary palps slender, relatively long, noticeably extending beyond head, ultimate palpomere oval, ca. 1.5 times longer than wide and ca. 1.5 times longer than palpomere 3. Antennae slender, filiform, attaining to elytral two thirds, scapus only slightly wider than pedicel; antennomere 3 ca. 1.3 times longer than antennomere 2 and ca. 1.1 times shorter than antennomere 4; length ratio of antennomeres 4.5: 2.8: 3.6: 4: 3.6: 4: 4: 4: 3.5: 3.4: 4.3; pubescence moderately dense, erect (Figs 3A, 3B). Pronotum transverse, ca 1.4 times longer than wide, trapezoidal, with almost straight sides, slightly convex anterior and almost straight posterior margins, with pronounced anterior and posterior angles. Scutellum triangular, truncate at apex (Fig. 3A). Elytra long, ca. 3 times longer than wide at humeri, inconspicuously widened distally, sparsely and prominently punctured, with sparse decumbent pubescence (Fig. 3A). Legs relatively robust; femurs and tibiae straight, tibiae slightly shorter than femurs; length ratio of hind tarsomeres 2.4: 1.5: 1: 0.3: 0.8 (Fig. 3B). Ultimate ventrite transverse, with median incision distally; penultimate ventrite with almost straight distal margin (Figs 3B, 3C, 4A). Aedeagus elongate; ventral plate with median triangular incision and laterally extended rounded distally laterophyses; parameres noticeably shorter than ventral plate (Figs 3C, 4A). Length (from anterior head margin to elytral apices): 3.7 mm. Width (at elytral humeri): 0.85 mm. Female. Unknown. Diagnosis. Mimoplatycis perkovskyi sp. nov., resembling in the relatively broad body M. notha, may be distinguished by the uniformly dark upper side and by the absence of a median keel in the anterior median pronotal areole (Fig. 3A). Etymology. The new species is named after Dr. Evgeny Perkovsky, the curator of the amber inclusion collection at SIZK. Distribution. Priabonian Rovno amber.
Author: Kazantsev, S. V.
Language: English
Topic: Fossil Insects in Amber
Domain: Life Sciences
Open Access status: green
OpenAlex ID: W6930627239
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