Plectrocnemia idsukachevae 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 : 94-95

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.16958643
persistent identifier	https://treatment.plazi.org/id/03A587A7-0375-C809-FF62-CD065D181555
treatment provided by	Felipe
scientific name	Plectrocnemia idsukachevae Melnitsky, Ivanov & Perkovsky
status	sp. nov.

Treatment

Plectrocnemia idsukachevae Melnitsky, Ivanov & Perkovsky sp. n.

https://zoobank.org/ urn:lsid:zoobank.org:act:485BD28B-BD3C-44AC-B1B6-0F94C1644E9D

( Figs 4 View Figure 4 , 5 View Figure 5 , 6 E View Figure 6 )

Type material: Holotype. Male. SIZK UA –28033, Rovno amber, late Eocene.

Description. Body length 4.1 mm; forewing length 5.1 mm. Head, antennae, wings and thorax brown, legs, abdomen light brown.

Male genitalia. Inferior appendages rounded on posterior view with dorsal subbasal projections. Superior appendages sclerotized and elongate, with rounded apices. Segment X with 2 soft lobes; ventral projections of this segment are visible as curved upwards. Small club-like projection with setose tip is visible right side of aedeagus. The aedeagal structures look deformed: soft aedeagus with apical notch and 2 thin lateral spines turned upwards and shifted to the right; two sclerotized rods make V-shaped construction with furrow-like profile supposedly served as ventral support for aedeagus, are seen turned to the left.

Comparison. This new species is related to Plectrocnemia nastigermania Melnitsky et Ivanov, 2013 from Rovno amber differing from it in shorter non-pointed superior appendages and in longer thick ventral projections of segment X.

Etymology. In honor of the 85th anniversary of paleoentomologist Irina Dmitrievna Sukacheva.

Distribution. Priabonian Rovno amber.

New findings of previously described species follow.