Marisia - Maros Megyei Múzeum Évkönyve 31/2. (2011)

Zoology

Contributions to the knowledge of the beetles fauna from Brassica napus oleifera L. crops

25 Onthophagus vitulus (Fabricius, 1776)______ — — — 1 —

26 Pleurophorus caesus (Panzer, 1796)_________ — 3 — — —

Coccinelidae

27 Coccinella septempunctata (Linnaeus, 1758) — 1 — — 6

28 Thea vigintiduopunctata (Linnaeus, 1758) — — 1 1 —

_____Dermestidae________________________________________________________________________________

30 Dermestes laniarius Illiger, 1801___________ — 2 7 16 -_____Cantharidae________________________________________________________________________________

31 Cantharis rustica Fallen, 1807 — — 11 2 18

_____Silphidae___________________________________________________________________________________

32 Nicrophorus vestigator Herschel, 1807__________—_____ — — _____1_________—____

33 Silpha obscura Linnaeus, 1758_____________ — — 3 — —

34 Tanathophilus rugosus (Linnaeus, 1758)_____ — — — 1 —

Material accumulated on the two investigated lots presents the composition of species of beetles and their dominance in the culture of turnip rape during the months of March-May, 2011. Most reported species are phytophagous (15 species), but were recorded also coprophagous (6) and necrophagous beetles (3), which were attracted by lower vertebrates, good into Barber traps and found in decomposition. Between coprophagous beetles stands genres Onthophagus with 3 species, Aphodius with 2 species and Lethrus with a species. Species of Silphidae family are necrophagous. With Barber traps were collected edaphic phytophagous beetles, that otherwise would not have been reported. Among those are mentioned the species: Opatrum sabulosum, Lethrus apterus, Harpalus distinguendus and Pseudophonus rufipes. These phytophagous species attack plants at soil level. In the culture of turnip rape were reported the following pests: Meligetis aeneus (83 specimens), Psylliodes chrysocephala (67 specimens), Epicometis hirta (64 specimens) and Ceutorhynchus assimilis (56 specimens). Also, in the culture of turnip rape were found six species zoophagous, which helps to maintain staff numbers of phytophagous insects, 2 species saprophagous that contribute to decomposition of plant debris and one micophagous species.

Conclusions

In the culture of turnip rape were identified in total 533 copies of beetles, belonging to 33 species, 28 genres and 10 families. Out of these, 362 samples were collected with Barber method and 171 - with net. The most abundant beetles reported from turnip rape culture were species of pests Meligetis aeneus si Psylliodes chrysocephala.

BIBLIOGRAPHY

1. Starodub, V., Gheorghiev, N., 2008, Fitotehnie, Ed. Museum, Chisinau: 544 pp.

2. Strategia nationals si Planul de actiune in domeniul conservärii diversitätii biologice, Cisinäu, Stiinta, 2002:104.

3. Крыжановсий О. Определитель насекомых Европейской части СССР, t. 2, Москва 1965, с. 668.

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