Tanytarsus serafini Giłka, 2010

Giłka, Wojciech, Zakrzewska, Marta, Dominiak, Patrycja & Urbanek, Aleksandra, 2013, Non-biting midges of the tribe Tanytarsini in Eocene amber from the Rovno region (Ukraine): a pioneer systematic study with notes on the phylogeny (Diptera: Chironomidae), Zootaxa 3736 (5), pp. 569-586 : 583-585

Tanytarsus serafini Giłka, 2010

Tanytarsus serafini Giłka, 2010: 715 .

Material examined. Adult male (tarsi of fore legs separated) preserved in 14 x 13 x 3 / 5 mm piece of amber (SIZ K-8193, Fig. 8 A, B; syninclusions: Formicidae , 1 specimen; Acari, 2 specimens).

Additions to original description. Adult male (n = 1) ( Fig. 8 B). Total length c. 2.2 mm. AR 0.61. Palpomeres slightly asymmetric, Pm3–5: 97–100, 88–96, 185 Μm long (proximal palpomeres unobservable). Eight thoracic dorsocentral setae on left side. Wings slightly asymmetric, 1180–1210 Μm long, 350 Μm wide, length/width ratio 3.37–3.46; VR Cu 1.76–1.82. Tibia of fore leg with 1 or 2 strong subapical bristles (length: 179–208 Μm), spurs absent. LR1 2.05; ta4/ta5 = 3.26 (p1) and 2.77 (p3); ta3 and ta4 of mid leg of equal length. Gonostylus c. 100 Μm long. Stem of median volsella c. 55 Μm long.

Remarks. Tanytarsus serafini has been known so far from amber collected in the Gulf of Gdańsk (Giłka 2010), and is at present recorded in the Rovno region. Our preliminary data indicate the species to be one of the most frequent tanytarsines in the Eocene Baltic amber (Giłka & Zakrzewska, in prep.), and confirm the hypothesis that resins from Rovno and Gulf of Gdańsk were forming synchronously.

Figures

FIGURE 8. Tanytarsus serafini Giłka, 2010, male. A — inclusion, B — habitus.