Matskási István (szerk.): A Magyar Természettudományi Múzeum évkönyve 94. (Budapest 2002)

Sziráki, Gy. ; Dulai, A.: Sarmatian (Late Miocene) arthropods from Tállya and neighbouring localities (Tokaj Mts, Hungary): preliminary report

thorax in ventral imprint 7 mm; length of the body fragment (head, thorax and some traces of abdo­men) in dorsal imprint 10 mm. Insecta: Hymenoptera: Symphyta - Ventral (Fig. 6) and dorsal imprint of the same specimen (CE). Length of the body 16 mm. Insecta: Hymenoptera: Aculeata: Chrysididae - One specimen (Fig. 7) (CE). Length of the body 16 mm. Insecta: Hymenoptera: Aculeata: Formicidae - One wingless and four winged specimens (CE). Length of the body 3 mm in the case of the wingless, and 7-10 mm in the winged specimens. The photographed specimen is 7 mm long (Fig. 8). Insecta: Hymenoptera: Aculeata: Vespoidea - One specimen (Fig. 9) (CE). Length of the body 16 mm. Insecta: Diptera: Nematocera - Six specimens (CE). Length of the body 4-7 mm; the photo­graphed specimen is 4 mm long (Fig. 10). Arachnoidea: Pseudoscorpiones - One specimen (Fig. 11) (CE). Length of the body 4 mm. Tally a-Gombo ska: Palota-tető (H8/b) Insecta: Heteroptera: Notonectidae - Ventral imprint of one specimen (Fig. 13) (CE). Length of the body 20 mm. Abaújszántó: Cekeháza (H9) Insecta: Odonata- 15 diatomite samples with imprints of larvae (13 CE, 2 HNHM, donated by GY. ENCSY). The specimens identifiable at least to family level belong to Libellulidae (Figs 14-15). Length of the body 12-31 mm; length of the illustrated specimens 30-31 mm. Insecta: Ephemeroptera - One poorly preserved wing fragment (HNHM, donated by GY. ENCSY). Insecta: Odonata: Libellulidae - Three larvae (CE). Length of the body 20-27 mm. The illus­trated specimen is 7 mm long (Fig. 12). Insecta: Orthoptera: Acridoidea - One specimen (Fig. 16) (HNHM, donated by G Y. ENCSY). Insecta: Hymenoptera: Formicidae - One poorly preserved specimen (HNHM, donated by GY. ENCSY). Length of the body 4.5 mm. Erdőbénye: diatomite quarry (H10) Crustacea: Decapoda: Brachiura - Five specimens (decapodite larvae?) (Figs 17-18) (CE). Length of the body 12-22 mm; in the case of illustrated specimens 22 mm (Fig. 17) and 20 mm (Fig. 18). Insecta: Ephemeroptera: Baetidae - One specimen (larva) (Fig. 19) (PSZ). Length of the body (without cerci): 10 mm. DEPOSITIONAL ENVIRONMENT The rock-forming frequency of diatoms prove unambiguously the eutrophic character of a lake. The deeper parts of the eutrophic lakes are anoxic, because af­ter the death of the diatoms the oxidation consumes lots of oxygen at the bottom of

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