Sucinorhagonycha pugachensis Kazantsev et Perkovsky, 2025

Sucinorhagonycha pugachensis Kazantsev et Perkovsky sp. n.

https://zoobank.org/ urn:lsid:zoobank.org:act:

( Figs 1–4 View Figure 1 View Figure 2 View Figure 3 View Figure 4 )

Type material: Holotype, male (?), SIZK K-6089, Klesov, Rovno Oblast, Rovno amber, Priabonian.

Description. Adult male (?). Uniformly dark brown to black. Head transverse. Eye small, eye diameter ca 2 times shorter than interocular distance. Ultimate maxillary palpomere prominent, elongate and securiform, about as long as penultimate palpomere. Antennae slender, filiform, pedicel (antennomere 2) ca 2 times longer than wide and ca 2 times shorter than scapus, length ratio of antennomeres: 66: 33: 19: 20: 45: 45: 47: 42: 40: 40: 40: 50; antennal vestiture moderately long, sub-erect, with numerous long bristling hairs ( Figs 1–4 View Figure 1 View Figure 2 View Figure 3 View Figure 4 ).

Pronotum presumably transverse (the angle of its location in the visible sector not allowing assessing its length and width ratio), trapezoidal, noticeably swollen at posterior angles, with almost straight sides, acute posterior angles and conspicuous longitudinal and transverse carinae. Scutellum short, triangular, rounded and slightly medially sinuate at apex ( Figs 1 View Figure 1 , 2 View Figure 2 ).

Elytra long, ca 3.2 times longer than wide at humeri, almost parallel-sided, slightly narrowing posteriorly, with noticeable distinct sparse puncturation and short sparse decumbent pubescence ( Figs 1 View Figure 1 , 2 View Figure 2 ).

Legs long, slender; trochanters prominent, elongate, obliquely connected to femurs, distally reaching over third of hind femurs; femurs and tibiae narrow, straight, tibiae and femurs subequal in length; tarsomeres 1 and 2 narrow, tarsomeres 3 and 4 widened; hind tarsomere 1 ca 1.3 times longer than tarsomere 2, tarsomere 2 ca 1.3 times longer than tarsomere 3; all claws simple, with small blunt tooth at base ( Figs 2 View Figure 2 , 3 View Figure 3 ).

Ultimate ventrite not visible ( Fig. 2b View Figure 2 ).

Length: ca. 2.9 mm. Width (at elytral humeri): 0.7 mm.

Female. Unknown.

Comparison. Sucinorhagonycha pugachensis sp. n., resembling in general appearance S. kulickae Kuśka, 1996 , the only other Sucinorhagonycha with simple filiform antennae, may be distinguished from it by the noticeable longitudinal and transverse pronotal carinae and slightly narrowing distally elytra, with distinct sparse puncturation ( Figs 1–3 View Figure 1 View Figure 2 View Figure 3 ) vs just median linear pronotal depression extending from posterior to anterior margins and elytra slightly widening distally, with elytral puncturation fusing into transverse wrinkles in S. kulickae ( Kuśka 1996; Kubisz 2000).

Etymology. The name of the new species is derived from the quarry where it was collected.

Distribution. Priabonian Rovno amber, Rovno Oblast, Ukraine.

Remarks. Although the terminal abdominal segments of the holotype are covered with several layers of folded hind wings and not visible, the antennal vestiture suggests it is possibly a male.

The specimen was found in a small piece of amber ( 0.9 g after primary treatment).