Euura lasiolepis

Euura s-lasiolepis-near-pacifica

Euura salix-petiole-gall

Euura lasiolepis Smith

The stem galling sawfly, Euura lasiolepis Smith, hereafter called the stem galler, oviposits in the petioles of very young leaves and initiates a gall in the stem below the leaf. The mature gall is a greatly swollen portion of the new shoot (Price and Craig 1984). Larvae feed in tissue derived from the pith in the developing stem (Smith 1970). The stem galler overwinters and then pupates in its gall. 

Range: along streams and near springs from 1200-2400 m in northern Arizona

Pontania new species (near pacifica)

The leaf galler, Pontania new species (near pacifica) (see Clancy et al. 1986), oviposits in the leaf midrib and a gall forms adjacent to the midrib and below the leaf

Range: along streams and near springs from 1200-2400 m in northern Arizona

Euura sp [this may not be the same species found on this host in CA]

The petiole galler, Euura sp., oviposits in the petiole of young leaves and produces an elongated and swollen petiole in which the larva feeds. 

Range: along streams and near springs from 1200-2400 m in northern Arizona

Patterns of intra-and interspecific association of gall-forming sawflies in relation to shoot size on their willow host plant