Hiekeolycus winkleri Kazantsev et Yamamoto, 2025

Hiekeolycus winkleri Kazantsev et Yamamoto , sp. nov.

http:/zoobank.org/ urn:lsid:zoobank.org:act:812CA068-62DB-4EFC-B5AD-5B1DB5E15EE8

( Fig. 2A–E View FIGURE 2 ).

= Hiekeolycus winkleri Kazantsev et Yamamoto in Motyka et al. 2023a, invalid name due to the absence of the secondary repository in journal’s ZooBank registration. Original registration in the ZooBank: http://zoobank.org/ urn:lsid:zoobank.org:act:D92B0B93-4077-46F7-8FB6-A7047C57EF85

Material examined. Holotype: ♂, specimen No. AMNH Ba-SY2, deposited in the American Museum of Natural History , New York, NY, USA. Baltic amber, Eocene.

Diagnosis. H. winkleri sp. nov. differs from contemporary H. berendti in the less conspicuous anterior and more acute posterior pronotal angles and distally widened hind trochanters ( Fig. 2D, E View FIGURE 2 ). Furthermore, H. berendti has denser and longer elytral vestiture and fewer elytral cells in each interstice than H. winkleri ( Fig. 2A–E View FIGURE 2 ).

Description. Male. Body elongated; dark brown (putatively red in the live specimen; Fig. 2 View FIGURE 2 ). Head narrower than pronotum. Eyes prominent, interocular dorsal distance 1.4 times eye diameter ( Fig. 2B View FIGURE 2 ); terminal palpomeres long, wide distally; antennae reaching over elytral mid-length; antennomere 3 longer than antennomere 2 ( Fig. 2C View FIGURE 2 ), combined subequal in length to antennomere 4 ( Fig. 2C View FIGURE 2 ). Pronotum 1.6 times wider than long, anteriorly rounded, with widely rounded anterior and sharply prominent posterior angles; median areole rhomboidal; lateral carinae almost straight; noticeable fronto-lateral carina ventrally ( Fig. 2A View FIGURE 2 ). Elytra flat, elongated, 3.3 times longer than width at humeri, four primary costae, costa 3 stoutest and basally forming humeral bulge; interstices with transverse cells ( Fig. 2A,B View FIGURE 2 ). Femurs widened distally, tibiae with pair of small spurs; frontal and middle trochanters elongate, distally rounded, hind trochanters distally widened ( Fig. 2D View FIGURE 2 ); tarsomeres with plantar pads in tarsomeres 1–4 ( Fig. 2A,B,D View FIGURE 2 ). Abdomen with eight visible ventrites, penultimate ventrite with broad triangular incision ( Fig. 2E View FIGURE 2 ).

Measurements. Body length 11.2 mm; pronotal length 1.4 mm; pronotal width 2.2 mm.

Etymology. H. winkleri sp. nov. is named in honor of our late colleague Josef R. Winkler (1930–1993), who described the first erotine taxa from Baltic amber in the late 1980s.

Locality and horizon. Baltic amber, Eocene.