1918] Weiss and Dickerson—Notes on Trioza Alacris 59 
Fig. 26. Panorpa nebulosa, Westw. (Mecoptera), ventral. 
Fig. 27. Panorpodes of Fig. 19, ventral. 
Fig. 28. Nannochorista dipteroides, Tillyard (Mecoptera), dorsal 
view, based on Fig. 11 of Plate XVII, by Tillyard, 1917 (Proc. 
Linn. Soc. N.S. W.). 
Fig. 29. Merope tuber, Newm. (Mecoptera), ventral. Gono- 
pods cut off. 
Fig. 30. Philopotamus Sp. n.? (Trichoptera), lateral. 
NOTES ON TRIOZA ALACRIS FLOR IN NEW JERSEY. 
By Harry B. Werss anp Epcar L. DickEerson.! 
New Brunswick, N. J. 
This Psyllid, which was introduced into New Jersey from Bel- 
gium and which is well known and destructive in Europe, has al- 
ready been recorded as occuring in New Jersey (Weiss, Canadian 
Ent. Feb., 1917, pp. 73-75). D. L. Crawford in the Monthly 
Bulletin of the California State Commission of Horticulture Vol. 
I, No. 3, p. 86, gives an account of its presence in California together 
with suggestions for its control and also treats it in his Monograph 
of the Psyllidz of the New World, Bull. 85, U. S. N. M. 
It occurs in New Jersey on bay trees which are kept either under 
glass all the year or out of doors during the summer and under 
glass the remainder of the year. The following observations were 
made on trees kept outside during the summer months. Its 
presence on Bay (Laurus nobilis) can be readily detected by the 
curled, discolored, swollen, blistered leaves, usually at the tips of 
the branches, containing what appear to be whitish masses. Upon 
uncurling a leaf the nymphs are readily seen clothed in a white waxy 
secretion. In severe infestations the tree has a sickly and unwhole- 
some appearance. 
In New Jersey, the Psyllid overwinters as an adult on bay trees, 
which are kept in storage houses where the temperature is never 
allowed to go below 38 or 40 degrees F. About the middle or end 
of May according to the weather, the trees are moved outside and 
at is then when egg laying starts. 
1The arrangement of the authors’ names has no significance and indicates neither seniority 
nor precedence. 
