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New and little-known lepidopteran (Lepidoptera) phytophages on the poplars (Populus spp.) in Bulgaria
Investigations were carried out during the period 1997-1999 on lepidopteran entomofauna deleterious to poplars (Populus spp.) in Bulgaria. The phytophages were collected in larval and pupal stage andExpand
New parasitoids of Saperda populnea (L.) (Col. Cerambycidae) in Bulgaria
The parasitoid complex of Saperda populnea (L.) (Col., Cerambycidae) was studied during the period 2002–2003 at different sites in Bulgaria. Galls containing cerambycid larvae were collected onExpand
Studies on the parasitoids of Gelechia senticetella (Stgr.) (Lepidoptera: Gelechiidae) in Bulgaria
The parasitoids of Gelechia senticetella (Stgr.) (Lepid.: Gelechiidae), a pest of Juniperus excelsa M. B., were studied in the “Tissata” reserve in Bulgaria. They were reared in laboratory conditionsExpand
Insects reared from stems and branches of goat willow (Salix caprea L.) in Bulgaria
Seven xylophagous insect species were established in stems and branches of Salix caprea L. during the period 1998–2003 in Bulgaria: Agrilus lineola lineola Redtenbacher (Coleoptera: Buprestidae),Expand
New Ichneumonidae (Hymenoptera) parasitoids of forest insect pests in Bulgaria
During the period 1989–1998 investigations were carried out on the parasitoids of some forest insect pests in Bulgaria. Twenty-one ichneumonid species are reported for the first time in Bulgaria asExpand
New and rare longhorn beetles (Coleoptera: Cerambycidae) in the Strandzha Mountain, Bulgaria
Thirteen new and little-known longhorn beetles (Coleoptera: Cerambycidae) were established in the Strandzha Mountain during the period 1988-2002: Rhagium sycophanta (Schrank), Necydalis ulmiExpand
Structural and functional alterations in radish plants induced by the phenylurea cytokinin 4-PU-30
Single treatment of expanding radish leaves with N1-(2-chloro-4-pyridyl)-N2-phenylurea (4-PU-30) lead to the stimulation of root cambial tissue activity and root growth. Leaf thickness, the volume ofExpand
New parasitoids of Paraphytomyza populi (Kltb.) (Diptera, Agromyzidae) in Bulgaria
The parasitoid complex of Paraphytomyza populi (Kltb.) (Diptera: Agromyzidae) was studied in Sofia, Bulgaria in 1997. Poplar leaves with P. populi larvae and pupae were collected from poplar stumpExpand
Studies on larval parasitoids of Paranthrene tabaniformis (Rott.) (Lepidoptera: Sesiidae) on urban poplars (Populus spp.) in Sofia, Bulgaria.
Parasitoides larvaires de Paranthrene tabaniformis (Rott.) (Lepidoptera: Sesiidae) dans les peupliers urbains de Sofia, Bulgarie. Entre 1996 et 1999, la composition specifique et la structure duExpand