Results 1 to 10 of about 101,928 (55)

Two new catfish species of typically Amazonian lineages in the Upper Rio Paraguay (Aspredinidae: Hoplomyzontinae and Trichomycteridae: Vandelliinae), with a biogeographic discussion

open access: yesPapéis Avulsos de Zoologia, 2021
Two new species of particular biogeographic significance are described from the upper rio Paraguay basin, one of the genus Paracanthopoma (Trichomycteridae, Vandelliinae) and the other of the genus Ernstichthys (Aspredinidae, Hoplomyzontinae).
Fernando Cesar Paiva Dagosta   +1 more
doaj   +1 more source

Revision of the genus Mimesthes (Coleoptera: Meloidae: Mylabrini)

open access: yesEuropean Journal of Entomology, 2000
The species of the mylabrine genus Mimesthes are revised and a new species (M. karooensis) is described from the South African Karoo. The systematic position of the genus is also discussed and an identification key to the species is proposed ...
Marco A. BOLOGNA
doaj   +1 more source

Phylogenetic relationships among social parasites and their hosts in the ant tribe Tetramoriini (Hymenoptera: Formicidae)

open access: yesEuropean Journal of Entomology, 2000
The phylogenetic relationships among Palaearctic species of the ant genus Tetramorium and its social parasites of the genera Strongylognathtus, Anergates and Teletomyrmex, were investigated electrophoretically at 21 presumptive enzyme loci.
Mathias SANETRA, Alfred BUSCHINGER
doaj   +1 more source

Olfactory orientation of the seven-spot ladybird beetle, Coccinella septempunctata (Coleoptera: Coccinellidae): Attraction of adults to plants and conspecific females

open access: yesEuropean Journal of Entomology, 2000
The olfactory orientation of the aphidophagous ladybird Coccinella septempunctata L. was assessed in a Y-tube olfactometer and a choice arena. The response of the predator to 22 plants, aphid prey and conspecifics was tested.
Mara SCHALLER, Wolfgang NENTWIG
doaj   +1 more source

Key life stages of two predatory ladybird species (Coleoptera: Coccinellidae)

open access: yesEuropean Journal of Entomology, 2000
Development and survival of larvae of two predatory ladybird species, Harmonia axyridis (Pallas) and Coccinella septempunctata L. on hibiscus (Hibiscus syridis L.) trees was followed daily outdoors during four seasons.
Pavel KINDLMANN   +3 more
doaj   +1 more source

Release of Aphidius rhopalosiphi (Hymenoptera: Aphidiinae) for cereal aphid control: field cage experiments

open access: yesEuropean Journal of Entomology, 2000
The potential of the parasitoid Aphidius rhopalosiphi for controlling cereal aphids was tested in 16 m2 field cage experiments in 1998 and 1999. In the first year, aphids and parasitoids were released in cages containing naturally occurring populations ...
Amandine LEVIE   +2 more
doaj   +1 more source

Effects of conspecific and heterospecific larval tracks on the oviposition behaviour of the predatory ladybird, Harmonia axyridis (Coleoptera: Coccinellidae)

open access: yesEuropean Journal of Entomology, 2000
The effect of the oviposition deterring pheromone (ODP) in the larval tracks of conspecific and heterospecific ladybirds on oviposition in Harmonia axyridis Pallas was studied in semi natural conditions. Gravid females of H.
Hironori YASUDA   +2 more
doaj   +1 more source

Nutritive cost of intraguild predation on eggs of Coccinella septempunctata and Adalia bipunctata (Coleoptera: Coccinellidae)

open access: yesEuropean Journal of Entomology, 2000
Coccinella septempunctata was approximately 20% more reluctant to eat the eggs of Adalia bipunctata than the reverse. In addition, fourth instar larvae of C. septempunctata failed to complete their development on a diet of A. bipunctata eggs and only 30%
Jean-Louis HEMPTINNE   +2 more
doaj   +1 more source

BOOK REVIEW: Forsythe T.G.: Ground Beetles.

open access: yesEuropean Journal of Entomology, 2001
Naturalists' Handbooks 8. The Richmond Publishing, Slough, 2000, 96 pp.
A. BEZDĚK
doaj   +1 more source

Autosomal univalents as a common meiotic feature in Jadera haematoloma (Herrich-Schaeffer, 1847) and Jadera sanguinolenta (Fabricius, 1775) (Heteroptera: Rhopalidae: Serinethinae)

open access: yesEuropean Journal of Entomology, 2001
So far, available cytogenetic data on 24 species of Rhopalidae reveal a male diploid chromosome number of 13, with a pair of m chromosomes and an X0/XX (male/female) sex chromosome determining system.
María José BRESSA   +3 more
doaj   +1 more source

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