Skoro nie wiemy dokladnie ktory to drwalnik proponuje termin 'ambrosia beetle', bez wyroznienia czy to 'European hardwood' czy tez 'broad-leaved', chyba ze Pani ma dodatkowy tekst. Opis:

drwalnik paskowany (Trypodendron lineatum)
drwalnik bukowiec (Xyloterus domesticus)
drwalnik paskowany ()
drwalnik znaczony (Xyloterus signatus)
http://pl.wikipedia.org/wiki/Chrząszcze_Polski

Xyloterus lineatus
From: Kolk A., Starzyk J. R., 1996: The Atlas of Forest Insect Pests
(Atlas skodliwych owadów lesnych) - Multico Warszawa, 705 pages. Original publication in Polish. English translation provided by Dr. Lidia Sukovata and others under agreement with The Polish Forest Research Institute.

Occurrence: Europe, Siberia, Japan, the USA, Canada.

Host plants: Almost all coniferous species, but mainly spruces, firs and pines.

Morphology: Adults are 2.5-3.6 mm long, cylindrical, robust. The underside of the body is dark or brown. Elytrae are dark brown with light stripes along. Elytral declivity is rounded. The head of males has a deep depression on frons and is covered with short hair. Eyes are divided on the upper and lower part. Eggs are white, 0.6x0.4 mm in size. Larvae are white, legless, characteristically banded, with the light brown head.

Biology: Adults overwinter in litter and soil up to 3 cm in depth. They initiate flying in March, April or May, depending on weather. Adults of the sister generation fly in late-June - early-July. After mating, females first construct entering galleries 1 to 5 cm deep into the wood and later on make 1 to 4 egg galleries. The female lays 20-50 eggs singly into niches cut on both sides of egg gallery. Larvae hatched 6-14 days after oviposition feed on ambrosia fungi and construct ladder-like tunnels of up to 7 cm in length. The larval development lasts for 20-40 days. Several (7 to 10) days after pupation in galleries, young adults emerge and have 2 week maturation feeding on fungi mycelium.

Damage: This species is one of the most serious technical pest of conifers. If abundant, beetles can infest also debarked wood. Infested trees can be easily detected by white boring flour coming out.

Preventive measures: Removal of the timer from stands by early-March in lowlands and early-April in mountains. Insecticide treatment or watering of timber is also recommended. Storage of timber in sunny places is also helpful, if other methods can not be used.

Control: Removal of all infested timber and trees before adult emergence. Insecticide treatment of newly-infested trees or their watering for the time not shorter than 4 weeks. The use of pheromone traps is also recommended. There should be 1 trap per 5 ha in low density populations, 1-2 traps per ha in moderate density, and 2-3 traps per ha in high density populations. Traps in each group should be placed in a distance of 2-5 m from each other. In wood yards, minimum 5 traps per ha is recommended if the population density is low, 10 traps per ha at medium population density, and 15 traps at high population density. Pheromone traps should be installed at least 30 m from logs, in shady places.
http://www.forestpests.org/poland/xyloteruslin.html

Biota
Domain Eukaryota - eukaryotes
Kingdom Animalia Linnaeus, 1758 - animals
Subkingdom Bilateria (Hatschek, 1888) Cavalier-Smith, 1983 - bilaterians
Branch Protostomia Grobben, 1908 - protostomes
Infrakingdom Ecdysozoa Aguinaldo et al., 1997 ex Cavalier-Smith, 1998 - ecdysozoans
Superphylum Panarthropoda
Phylum Arthropoda Latreille, 1829 - arthropods
Subphylum Hexapoda
Class Insecta Linnaeus, 1758 - insects
Subclass Dicondylia
Infraclass Pterygota
Division Neoptera
Subdivision Endopterygota
Order Coleoptera Linnaeus, 1758 - beetles
Suborder Polyphaga Emery, 1886
Infraorder Cucujiformia
Superfamily Curculionoidea
Family Scolytidae
Genus Xyloterus
Xyloterus lineatus
http://www.taxonomy.nl/Taxonomicon/TaxonTree.aspx?id=26946

Xyloterus domesticus Linnaeus, 1758
[Hungarian Version]

--------------------------------------------------------------------------------

Csóka, György and Kovács, Tibor (1999): Xilofág rovarok - Xylophagous insects. Hungarian Forest Research Institute. Erdészeti Turományos Intézet, Agroinform Kiadó, Budapest, 189 pp.


--------------------------------------------------------------------------------

Mn: Varratos bükkszú / En: Broad-leaved ambrosia beetle

3-3.5 mm. Bivoltine. The egg gallery is usually straight, sometimes forked. The larval tunnels are short and at right angles to the egg gallery. Common in dead wood and logs of oak (Quercus), occasionally develops in wood of other broad-leaved trees. Lives in a symbiotic relationship with ambrosia fungi. The larvae feed on the fungus instead of feeding on the woody tissue. Northern-, and Central-European species, common everywhere in Hungary.
http://www.forestpests.org/hungary/weevilsxd.html

Trypodendron domesticum (Linnaeus)
English Common Name: European hardwood ambrosia beetle
Taxonomic Rank: Coleoptera: Scolytidae: Scolytinae: Scolytini: Xyloterina
Synonym(s): Xyloterus domesticus
http://www.barkbeetles.org/browse/subject.cfm?SUB=4161

Xyloterus domesticus (L., 1758) (a bark or ambrosia beetle)
http://www.bioimages.org.uk/html/T126622.HTM - 4k

EMERGENCE SUPPRESSION OF BARK AND AMBROSIA BEETLES IN INFESTED OAKSFile Format: PDF/Adobe Acrobat - View as HTML
and ambrosia beetle (Xyloterus domesticum (L)). Arboric. J. 5:143–146. Švihra, P. 2000. Protection of Live Oaks Against Attacks by. Oak Bark Beetles And ...
http://www.treelink.org/joa/2004/jan/svihra1-04.pdf