Ganseriella pankowskiorum Fedotova et Perkovsky, 2017

Perkovsky, E. E. & Fedotova, Z. A., 2017, The Second Cretaceous Gall Midge Genus Of The Tribe Diallactiini (Diptera, Cecidomyiidae) From The Late Cretaceous Burmese Amber, Vestnik Zoologii 51 (2), pp. 117-124 : 123

Ganseriella pankowskiorum Fedotova et Perkovsky , sp. n.

urn:lsid:zoobank.org:act:671FBEB1-9925-4D64-AEC6-53D035AB8D44

M a t e r i a l. Holotype. SIZK Bu–1, well preserved inclusion of male with tarsi missing, Burmese amber , earliest Cenomanian ( fig. 3 , 1 –10).

D e s c r i p t i o n. Male ( fig. 3 , 1 –10). Body (with genitalia) is 1.3 times shorter than antennae. Antenna 1.5 times as long as wing. Head with large eyes that laterally cover all width of head. Scape 1.8 times as long as round pedicel. 1st flagellomere 6.0 times as long as wide. 2nd flagellomere as long as 1st. 5th flagellomere 3.8 times as long as wide, slightly shorter than 1st flagellomere; basal enlargement 1.8 times shorter than neck. 13th flagellomere 1.2 times as long as 14th and 0.56 times as long as 5th; 14th flagellomere with long projection and rounded apically. Palpi very narrow, parallel-sided laterally. 2nd, 3rd and 4th segments strongly prolonged, more than 2.0–2.5 times as long as 1st. Wing is 2.7 times as long as wide. Vein R 1+2 0.63 times as long as wing length. Hind femur 1.2 times as long as profemur. Ratio of hind tarsi 1:7.8:5.8:2.3:1.3. Gonostylus wide and almost parallel-sided distally, 1.7 times as long as gonocoxites. Tegmen wide, narrowed near apex, reaching short of gonostylus.

M e a s u r e m e n t s (mm): body length, 1.60; antennal length, 2.13; head length, 0.26; width of lateral side of head, 0.15; palpi length, 0.23; thorax length, 0.38; wing length, 1.43; wing width, 0.53; vein R 1+2, 0.90; halter length, 0.21; length of fore: coxa, 0.20; trochanter, 0.05, femur, 0.77, tibia, 0.71; metatarsus, 0.11; length of middle: femur, 0.69, tibia, 0.74, length of hind: femur, 0.93; tibia, 0.85; abdomen length, 0.98; genitalia length, 0.09.

E t y m o l o g y. The species is named after Mark A. Pankowski and his father Mark S. Pankowski (Rockville, Maryland, USA) for donating the holotype to the amber collection of the Schmalhausen Institute of Zoology , the National Academy of Sciences of Ukraine.

We are grateful to A. P. Rasnitsyn (Borissiak Paleontological Institute, Russian Academy of Sciences) for the constant help.

Figures

Fig. 3. Ganseriella pankowskiorum, male, holotype SIZK, Bu–1 (1–10): 1 — flagellomere 13 and 14; 2 — flagellomere 5; 3 — flagellomere 9; 4 — head, scapus, pedicel and palpi; 5 — wing; 6 — general appearance; 7 — 2nd–5th tarsomeres; 8, 9 — abdominal segments 6–8 and genitalia (8 — view dorsally and 9 — laterally); 10 — thorax.

Fig. 1. Ganseriella pankowskiorum, male, holotype SIZK, Bu–1: 1 — amber with holotype (×3.3); 2 — general appearance (×22); 3 — body and antennae (×29).