Tanytarsus serafini, 2010

Zakrzewska, Marta, Krzemiński, Wiesław & Giłka, Wojciech, 2016, Towards the diversity of non-biting midges of the tribe Tanytarsini from Eocene Baltic amber (Diptera: Chironomidae), Palaeontologia Electronica (Ottawa, Ont.) 12 (1), pp. 1-21 : 12

Tanytarsus serafini

Giłka, 2010

Figures 1 , 6.3-6

2010 Tanytarsus serafini Giłka ; Giłka, p. 715, plates 1-2

(male).

2013 Tanytarsus serafini Giłka ; Giłka et al., p. 583, figure

8.

2014 Tanytarsus serafini Giłka ; Zakrzewska and Giłka, p.

342 (in key).

2015a Tanytarsus serafini Giłka ; Zakrzewska and Giłka,

p. 359 (remarks).

Material examined. Eight adult males in 8 pieces of amber (Eocene, ~40-45 Ma , Gulf of Gdańsk, Figure 1 ) : 1 male ( CCHH 93-7 , 14 x 13.5 x 5 mm), syninclusions: Acari (2 ind. attached to abdomen) ; 1 male ( CCHH 213-9 , 9 x 8 x 3.5 mm, Figure 6.5, 6.6 ) ; 1 male ( CCHH 242-2 , 11.5 x 6.5 x 3.5 mm, Figure 6.3, 6.4 ) ; 1 male ( CCHH 242-3 , 8.5 x 7.5 x 4 mm), syninclusions: Acari (2 ind.) ; 1 male ( CCHH 257-9 , triangular 20 x 9.5 x 5 mm) ; 1 male ( CCHH 1754-2, 13 x 13 x 4 mm) ; 1 male ( CCHH 1754-3 , 10.5 x 7.5 x 5 mm) ; 1 male ( CCHH 1754-8 , 9.5 x 8 x 5 mm) .

Remarks. Tanytarsus serafini is the best known and one of the most frequently recorded species of Tanytarsini in Baltic amber . Figure 6.3-6 illustrates the structure of the anal tergite together with the median setae (these have become stuck together with resin, giving the impression that they are spinulae) and an atypical structure of the superior volsella (cf. Giłka, 2010).

Figures

FIGURE 1. Tanytarsini - inclusions in Baltic amber from the Hoffeins collection (for details see Table 1 and Material examined).

FIGURE 6. Variations of diagnostic structures in males of Tanytarsus protogregarius (1, 2) and T. serafini (3-6). Hypopygium in dorsolateral aspect (1, 3, 5) and its structures magnified ca. 3-4 times (below): anal point (2, 4) and superior volsella (6).