Boros István (szerk.): A Magyar Természettudományi Múzeum évkönyve 51. (Budapest 1959)

Kovács, L. ; Gozmány, L.: Data to the quantitative relations of the Lepidoptera of the Alderwood Marshes in Ócsa, Hungary

IV. concerning species above l°/

0 Date of survey in open forest 8 22 i Aug 19 2 12 Total J u 1 y i Aug u s t September Total Lamp I Lamp II Lamp I Lamp II Lamp I Lamp II Lamp I Lamp II Lamp I Lamp II Lamp I Lamp II Lamp I Lamp II 25 15 14 3 36 12 634 277 102 39 30 27 841 373 37 28 192 119 55 8 7 5 — — 2 — 293 160 15 4 1 2 4 1 27 4 76 36 69 25 192 72 1 3 30 11 17 7 146 52 5 1 — — 199 74 12 4 20 6 5 20 11 9 2 2 1 68 24 46 22 11 3 2 — 9 3 3 — 1 1 72 29 37 r—

1 38 23 5 5 24 8 31 8 7 3 142 58 1 2 5 1 8 15 61 16 11 6 — — 86 40 9 5 16 13 24 8 15 6 5 2 — — 69 34 83 17 24 33 2 — — 1 — — — 110 50 7 5 — 5 18 11 20 12 7 9 3 2 55 44 14 11 17 11 6 4 14 6 2 1 1 —. 54 33 21 6 3 — 8 — 19 7 38 15 11 6 100 34 — — 37 8 5 2 12 1 — • — 54 11 1 —• 32 10 23 8 2 2 — 1 — 59 20 8 8 18 4 5 3 4 1 — — — 35 16 6 2 4 1 — — 8 2 28 6 1 1 47 12 — 72 47 — — 1 — — — — — 73 47 8 3 13 11 34 6 10 3 17 3 3 1 85 27 —. — —. — 3 2 6 4 2 1 1 — 12 7 — — 11 10 26 26 3 3 — 1 — — 40 40 — — — — —. — 47 14 4 — 1 1 52 15 6 — 12 5 13 4 2 — 1 — — —34 9 — 1 —' 2 — 11 8 6 —' 5 1 25 9 nonetheless that of the previous year, whilst the number of individuals was 644 on the lamp functioning till the morning (712 on both lamps in 1952). As regards dominancy relations, there was a shift on this occasion as related to the previous year. Namely, at the corresponding period of 1952, the dominant species was Ae. punctulata, whilst it seemed in this year, as judged by the number and state of the specimens, that this species was already past its acme. Concluding from the number of individuals, also E. griseola culminated about a week before, as related to the previous year, the same as E. alternata, which species surpassed the numbers of even X. fluctuata, contrarily to 1952. Of the species of richer individual numbers, it was only E. bistortata which defended its second place. Deviations of this nature, however, do not touch the essentials of the problem, and one may draw, on the basis of survey results gathered during a considerable period, a picture of the quantitative relations which will hardly be modified by the data of one or another year. Now, not only did we make control surveys in the same locality, but also in another territory of the country, rich in alderwood marshes, namely in the Hanság (NW Hungary). The surveys here were made by L. Gozmány and J. S z ő c s in the middle of July, and by J. S z ő c s and M. G 1 a s e r in the