Archaeopolycentra turvalsia Melnitsky et Ivanov, 2021

Melnitsky, S. I. & Ivanov, V. D., 2021, Two new species of the genus Archaeopolycentra (Trichoptera: Polycentropodidae) from Cretaceous Taimyr amber, Far Eastern Entomologist 444, pp. 1-7 : 3-4

Archaeopolycentra turvalsia Melnitsky et Ivanov , sp. n.

http://zoobank.org/NomenclaturalActs/ 216E2B54-0BBC-4A08-8534-543ED821CDAE

Figs 1–3

TYPE MATERIAL. Holotype: ♂, PIN 3311 / 1861, Russia: Taymyr amber,

Yantardakh , 3 km above the mouth of Maimecha river , Eastern Taymyr, Kheta formation, Santonian. Head and thorax are absent in this type specimen .

DESCRIPTION. Legs and abdomen yellowish. Wings light brown.

2 – genitalia, ventral.

Male genitalia. Posterioventral margin of sternite IX without tubercles, projected posteriorly as a rounded plate. Projections of the segment X longer than aedeagus,

with thin lamellar leaf-like curved apex. Inferior appendages are long and apparently represented by wide ventral lobes; their dorsal lobes, if present, should be small,

although they are not clearly visible. Apex of ventral lobe with thin pilosity and 2

long yellowish setae seen on the left gonopod. Aedeagus pentagonal in cross-

section, sclerotized around its perimeter. Distal part of aedeagus with 2 long bone-

like downward directed lateral processes wide in apical parts.

MEASUREMENTS. Body length 2.1 mm; forewing length 2.7 mm.

DIAGNOSIS. The new species is related to † Archaeopolycentra zherikhini

Botosaneanu et Wichard, 1983 and A. achupomotet sp. n. from the same locality.

The new species differs from the former one in the shape of the apex of the aedeagus and in the presence of long processes in the medial part of the aedeagus, and from the latter species in the shorter dorsal lobe of the gonopod and the longer processes of the aedeagus. One more species of this genus, Archaeopolycentra yantardakh

Ivanov et Melnitsky, 2017, is more remote because of smaller lateral processes of aedaegus and shorter projections of segment X.

ETYMOLOGY. Arbitrary combination of letters.

viations: IX – segment IX; aed – aedeagus, ia – inferior appendages, ps – projections of the segment X, pae – lateral processes of aedeagus.

Figures

Figs 1, 2. Archaeopolycentra turvalsia sp. n. (holotype, male): 1 – general view, ventral;

Fig. 3. Archaeopolycentra turvalsia sp. n. (holotype, male): genitalia, ventral. Abbre-