Holocentropus vottakvot Melnitsky, Ivanov & Perkovsky, 2024

Holocentropus vottakvot Melnitsky, Ivanov & Perkovsky sp. n.

https://zoobank.org/ urn:lsid:zoobank.org:act:A1330EF4-09AE-4391-8958-AC419307FF4D

( Figs 1 View Figure 1 , 2 View Figure 2 , 9 A View Figure 9 )

Type material: Holotype. Male. SIZK CC –53, SIZK CC –53A, Stare Selo , Rovno amber, late Eocene.

Description. Body length 4.7 mm, forewing length 5.8 mm. Head, antennae and wings light brown. Thorax, legs and abdomen brown. Lateral sternal processes of sternum V with large basal part, apex not pointed.

Male genitalia. Inferior appendages wide with narrowed finger-like dorsal part. Posterior ventral surface of inferior appendage slightly convex with small medial tubercle. Segment X with ventrolateral bundles of straight strong setae. Dorsal part of this segment projects backwards with small incision on the posterior margin. Ventral processes of segment X long, fused from the base to the medial part, pointed apical parts project beyond in the shape of a swallowtail. Phallobase short, endophallus with curved spine near the apex and several spine-like processes in the middle part.

Comparison. The new species differs from Holocentropus scissus Ulmer, 1912 , which appears to be the closest to it, by the shape of the inferior appendages: in H. scissus , the medial part of inferior appendage with deep lateral incision. Thus, the inferior appendages are divided into 3 parts. Holocentropus vottakvot sp. nov. has the larger fused ventral processes of the segment X compared to the H. scissus .

Etymology. The specific name vottakvot is indeclinable and must not agree in gender with its generic name; it derives from Russian and means “so that is” or “there you have it”. Distribution. Priabonian Rovno amber. Remarks. The specimen was found in the piece of amber 8.3 g after primary treatment. Syninclusions: SIZK CC–53 – Chironomidae, SIZK CC –54 – Sciaridae .