INSECTS AKFKCTIXC. PARK WD WODDLANI) TRF.ES 1 95 



Tlic l)<)d\' is elongated, |)\ I'iforni durino- c^j;' Ia\ini;' and contracts to a 

 globular or tlattened shape afterwards or in the winti'r. 



Natural enemies. This species is sui)ject to attack \)v a number (jf 

 natural enemies; anioni;" the more important ma\- bi' mentioned several 

 species of ladybeetles, particularly the 15-spotted one, Anatis oc el- 

 la t a Oliv., and the two-spotted form, Adalia hi])unctata Linn; 

 both species have been observed bj- the writer in considerable numbers 

 around infested pines in Washington \)iu-k. The twice stabbed ladybeetle, 

 C h i 1 o c o r u s b i v u 1 n e r u s Muls., and the spotted ladybeetle, M e g i 11 a 

 maculata De G., have also been recorded as preying on this aphid. 

 Syrphid larvae and ant lions, Chrysopa and Hemerobius, are recorded 

 by Mr Storment as being very destructive to this insect. 



Remedial measures. This insect is easily reached by sprays, and as 

 previously noted Dr E. B. Southwick has found that very stiff sprays are 

 efficient in combating this pest. Mr Storment states that thorough spray- 

 ing with kerosene emulsion in May proved very efficient. The standard 

 emulsion was probably diluted with g parts of water. In case it was 

 undesirable to use kerosene emulsion, it is probable that the insect would 

 be equally susceptible to a whale oil soap solution, i pound to 4 gallons 

 of water, or even a forcible spray of cold water would wash off large 

 numbers of the insects. This latter could be used very well where a 

 nearby hydrant afforded sufficient head. 



Bibliography 

 1856 Fitch, Asa. Ins. N. Y. 1st Rep't, p. 167-69 

 1885 Lintnei, J. A. Ins. N. V. 2d Re]i't, p. 180-87 

 1898 Storment, E. L. Ins. 111. 20th Rep't, ap.\. p. 3-24 



Alder blight aphid 

 PcnipJiigiis tcsscllatits Fitch 

 Conspicuous cottonylike bunches hanging from the underside of alder stems, are 

 very characteristic of this insect. 



This species is exceedingly abundant in sections of the Adirondacks 

 during July and August. It occasionally occurs on cultivated alders in 



