Systematic position. Class Insecta, order Hymenoptera, suborder Symphyta, family Tenthredinidae, subfamily Tenthredininae, tribe Selandrini, Athalia. Eggs Length: around mm; diameter: mm (Sawa et al., ). White to milk-white, ellipsoidal. Larvae Length: mm (mature larvae). Face and. No genome information of primitive hymenoptera (Symphyta, sawfly) is available vs higher suborder (Apocrita, Apis, Nasonia etc.). This species is a.
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Turnip sawfly – Wikipedia
Close Find out more. Knowledge Bank home Change location. Go to distribution map White to milk-white, ellipsoidal.
Face and anterior of head with setae; thorax with protuberances developed weakly, one pair on first and second annulets of prothorax, two pairs on second annulet of meso- and metathorax, three pairs on fourth annulet of meso- and metathorax; abdomen without stout hairs, with two pairs of protuberances on second and third annulets of first segment and two pairs on second and fourth annulets of second to ninth segments Abe, Note, however, that Lorenz and Kraus consider the abdomen to be devoid of such protuberances.
Pupae Tough, silken cocoon, yellow in colour Hill, Coloration as female except head basal two-thirds of mandibles white, apical athwlia of mandibles red-brown; abdomen apical region of first tergum black Benson, ; Abe, Cultural Control Methods to destroy over-wintering pre-pupae include crop rotation, destruction of crucifers and deep ploughing Hill, Biological Control Laboratory and field experiments performed in Hungary showed that illumination for 30 minutes during the scotophase in autumn, in the third and eighth hours after the beginning of the dark period, decreased the number athaliz larvae of A.
cabbage leaf sawfly (Athalia rosae)
These athwlia indicated the possibility rosaee using a similar method of control in commercial fields. As a consequence of these periods of illumination, females developing from non-diapausing larvae would swarm in autumn at a time when the rape crop was no longer suitable for oviposition Saringer, In small-plot tests in Western Siberia, Russia, Indian mustard proved to be the most effective, overall, of a number of crucifers investigated for use as trap crops to protect rape against Rosad.
Its effectiveness was borne out in a test over ha in which it was sown 7 days before rape in a m band around the crop Vlasenko and Sushkova, Chemical Control Due to the variable regulations around de- registration of pesticides, we are for the moment not including any specific chemical control recommendations.
For further information, we recommend you visit the following resources: EU pesticides database www. It was considered to be a serious pest of turnips in England in sequences of hot summers, but less so in sequences of colder summers Benson, Outbreaks and infestations are sporadic and appear dependent on the highly polyphagous nature of A. Large-scale planting of fields with cash-crops such as rape and mustard seed are as equally liable to be infested Athaliaa, as greenhouse and small-scale domestic crops of crucifers Nagasaka, Imported crucifers, grown commercially, have been reported to suffer serious damage over several rosa for example, Brassica chinensis var.