ON THE REARING OF NESOSELANDRIA-MORIO (FABRICIUS) AND BIRKA-CINEREIPES (KLUG) (HYMENOPTERA, TENTHREDINIDAE), WITH DESCRIPTIONS OF THEIR LARVAE

The larva of a Holarctic selandrine sawfly Nesoselandria morio (Fabric ius) from southern Finland which feeds on mosses is described. Compare d with the larva of Birka cinereipes (Klug), which feeds on forget-me- nets (Myosotis scorpioides), it shows some apomorphic characters: fusi on of four apical antennal segments and reduction of sixth dorsal annu let on the third abdominal segment. It is the first sawfly larva known to feed on mosses (Bryopsida). The cocoon has a special structure. Th e larvae of the tribe Aneugmenini have an extra moult after the feedin g period and differ in that respect from known larvae of Strongylogast erini and Dolerini.