292 



Britton (\V. E.), Davis (I. W.) cS: Ashworth (J. T.). Report of 

 Work in suppressing the Gipsy and Brown-tail Moths. Season 

 of 1919-1920.— Co««. Agric. Expt. Sta., Xciv Haven, Bull. 226, 

 1921, pp. 151-168, 1 fig. 



The methods of dealing with the gipsy moth [Porthetria dispar] 

 and the brown-tail moth [Xygrnia pJiaeonJioca] in preceding years 

 [R.A.E., A, viii, 341, etc.] have been continued with satisfactory 

 results. No new towns have been found invested with gipsy-moth, 

 and no trace of it has been found in seven previously infested towns. 

 A watch has been kept for brown-tail webs, but none have been found. 

 The details of suppression work in various towns are given and 

 summarised in a table. A resume is given of the rearing, colonisation 

 and recovery of the parasites, Anastatns hifasciatus, Boy., ApanteJes 

 ladeicolor, Veir., Pteromaliis egregius, Forst., Monodontomerus aereus, 

 Wlk., Mtieorus versicolor, Wesm., Conipsilura concinnata, Meig., and 

 Sturmia [Zygohothria) nidicola, Towns., as well as the predaceous 

 ground beetle, CaJosoma sycophanta, L. ^lost of these parasites have 

 become fairly well distributed over the infested portion of the State, 

 and some help may be expected from them in a few years' time. A new 

 quarantine order forbids not only the transportation of nursery 

 stock or forest products from infested to non-infested States, but also 

 from infested to non-infested localities within the same State. 



It is believed that P. dispar is now well in hand in Connecticut, 

 but the importance of continuing the present work is pointed out, in 

 order to retain the infestation within its present limits, or reduce it if 

 possible. 



Zappe (^F. p.). Notes on the Life History of the False Apple Red Bug 

 in Connecticut [Lxgidea mendax, Reut.). — Conn. Agric. Expt. 

 Sta., Xcic Haven, Bull. 226, 1921, pp. 177-179. 



Lygidea mendax, Reut. (false apple red bug) caused considerable 

 damage in some of the Connecticut apple orchards in 1920. The eggs 

 are laid in the lenticels of the apple twigs, and hatch when the earliest 

 blossom buds show pink at the tips. The young nymphs crawl to the 

 tip of the twig and pvmcture the tender leaves, causing them to show 

 reddish spots and curl upward. In the third or fourth instar the 

 nymphs pass on to the fruit to feed. Adults began to appear on 

 25th June, and by 2nd July most of them had disappeared. Nicotine 

 solution, 1 pint to 100 gals, of water, should be sprayed on the trees 

 just before the blossom buds open, the spray being directed from both 

 sides at once, if possible, as the nymphs readily jump to the opposite 

 side of the leaf to avoid the spray. Nicotine should also be added to 

 later sprays, especially that applied soon after the petals fall. 



Zappe (M. P.). Xotes on the Life History of a Sawfly feeding on 

 Austrian Pine (hvcorsia zappei, Rohw.). — Conn. Agric. Expt. 

 Sia., Neio Haven, 'Bull. 226, 1921, pp. 179-182. 



The sawfly, Itycorsia zappei, Rohw.. is recorded on Austrian pines 

 in New Haven. The eggs are laid singly on the needles of new growth 

 in late June and early July. The young larvae spin a loose web 

 around themselves, fastening the outer threads to the needles, and 

 inside this they feed, biting off the needles at their base and devouring 

 them. The six larval instars are described, and Rohwer's description 

 of the adult is quoted. 



