Plectrocnemia posleotbora Melnitsky, Ivanov & Perkovsky, 2025

Melnitsky, Stanislav I., Ivanov, Vladimir D., Perkovsky, Evgeny E. & Legalov, Andrei A., 2025, Three new species of Plectrocnemia Stephens, 1836 (Trichoptera: Polycentropodidae) from Rovno amber, Ecologica Montenegrina 87, pp. 90-100 : 93-94

publication ID	https://doi.org/10.37828/em.2025.87.4
publication LSID	lsid:zoobank.org:pub:CD42C12E-ECB2-4AEC-B6CF-77D408AA60B1
DOI	https://doi.org/10.5281/zenodo.16958634
persistent identifier	https://treatment.plazi.org/id/03A587A7-0372-C808-FF62-CC095CC6104D
treatment provided by	Felipe
scientific name	Plectrocnemia posleotbora Melnitsky, Ivanov & Perkovsky
status	sp. nov.

Treatment

Plectrocnemia posleotbora Melnitsky, Ivanov & Perkovsky sp. n.

https://zoobank.org/ urn:lsid:zoobank.org:act:39EE4462-05EC-421D-BF50-C5792E89DF22

( Figs 2 C, D View Figure 2 , 3 View Figure 3 , 6 C, D View Figure 6 )

Type material: Holotype. Male. SIZK WZ–5, Rovno amber, late Eocene.

Description. Body length 4.3 mm; forewing length 5.7 mm. Head, abdomen, wings and thorax brown, legs light brown.

Male genitalia. Inferior appendages wide with spine-like projection of dorsal margin directed mediocaudad. Lateral view shows them to be irregularly triangular. Superior appendages are almost rectangular. Segment X weak, not sclerotized; its ventral projections are rather thin, with faint curvature on lateral view. Aedeagus with two sclerotized lateral peg-like projections having several small teeth at apex and two long dorsal teeth at base.

Comparison. The new species is similar to Plectrocnemia astroblema sp. nov. and differs from it in straight posterior margin of segment IX without angular projections and in solitary shorter apical club-like spines on each side of the aedeagus instead of paired longer spines in P. astroblema sp. nov.

Etymology. The specific name posleotbora is indeclinable and must not agree in gender with its generic name; it derives from Russian and means “after natural selection”.

Distribution. Priabonian Rovno amber.