1078 WALTER H. WELLHOUSE 



ocellana Fabr., Tmetocera (Bud moth) 



The brownish larvae of Tmetocera ocellana are commonly found in the 

 partly opened leaf buds in April and May, on both native and European 

 hawthorns. The moths emerge from the larval nests in June and early 

 July. 



prunivora Walsh, Laspeyresia (Lesser apple worm) 



The small white caterpillars of Laspeyresia prunivora are very common 

 in the fruit of many native hawthorns in late summer. They eat most of 

 the pulp from one side of the fruit, causing the skin to sink in there. The 

 larvae of the second generation sometimes -remain in the fruit all winter, 

 living within a mixture of silk and pellets of frass. Others spin silken 

 hibernacula under the bark of the trunk very similar to those of the codling- 

 moth larvae but smaller. They pupate within the hibernacula in the spring 

 and the moths emerge in May and June. In the laboratory they emerged 

 in March. Moths of the first generation were taken in the field from 

 August 15 to August 30. 



quadrifasciana Fern , Eulia 



The yellowish larvae of Eulia quadrifasciana tie together with silk the 

 leaves of terminal clusters on Crataegus punctata in May. They pupate 

 within the larval nests and the moths emerge in early June. The moth is 

 yellow and orange, with darker oblique bands on the fore wings. The 

 species is not very common. 



rosaceana Harris, Cacoecia (Oblique-banded leaf roller) 



Clusters of leaves tied together by the larvae of Cacoecia rosaceana are 

 fairly common on all native hawthorns in May and July. The green- 

 striped larva, with its brown head and shield, is generally found on a singb 

 leaf under a slight web, feeding on one side of the leaf only. When full- 

 grown the larva ties a cluster of leaves together to pupate within. Moths 

 emerged from these nests from May 26 to June 30, and a second brood 

 emerged from August 1 to August 15. 



Yponomeutidae 



oreasella Clem., Argyresthia 



The small, green, black-headed larva of Argyresthia oreasella bores, 

 through a terminal leaf bud down into the twig and makes a hole in the 

 side of the twig about J inch from the tip, through which the frass is cast 

 out of the burrow. When disturbed the larva runs quickly out of either 

 the hole in the twig or the hole in the bud, to escape. Infested twigs 

 wilt soon after the larva has left the burrow, and then become brown and 

 dry, giving the tree a fire-blighted appearance (fig. 112). Larvae of this 

 species were found in many native hawthorn twigs in May. They leave the 



