222 MAINE AGRICULTURAL, EXPERIMENT STATION. 1906. 



The apple maggot and the larva of the codling moth are often 

 present in the same apple. Discussions of the life history, habits 

 and remedies of these two pests are given in other available 

 bulletins of this Station and are therefore not repeated here. 



Lace Bugs. The recently described * Tingitid, Corythuca 

 pergandei Heid. was extremely numerous upon willow and alder 

 (Alnus incana) between Bangor and Orono this season. 



Infested Spruce Cones. Late in August the cones on the 

 Norway spruces on the campus were observed to be dropping 

 prematurely. Examination showed a general infestation by a 

 Lepidopterous larva about seven-eighth of an inch in length. 

 Some were a uniform purplish brown, others showed a greenish 

 color on the thoracic segments with 2 tiny black spots on the 

 first segment behind the head. These larvae began spinning 

 cocoons about the middle of September. The cocoons are the 

 color and transparency of thin white tissue paper. The average 

 length is about one-half inch and they are usually about one- 

 fourth of an inch wide, though sometimes the cocoons are nearly 

 as broad as long. Pupation does not take place at once but the 

 caterpillar, readily seen through the thin cocoon, lies for days 

 in a U shaped loop. If the cocoon is disturbed, the caterpillars 

 break through and travel off actively and with apparent irrita- 

 tion. The infested cones were prematurely brown in the vicin- 

 ity of the larval tunnels. The excavations were chiefly at or near 

 the center of the cones, from one to several larvae being present 

 in a single cone. Through the kindness of Doctor Howard 

 specimens were referred to Mr. Fiske (Bureau of Entomology, 

 Washington, D. C.) who stated them to be evidently a species of 

 Pinipestis, mature moths being necessary for full determination. 



Maggots which were attacking the decaying portion of the 

 cones infested by these caterpillars developed in abundant num- 

 bers into Drosophila amcena Loew, kindly determined by Mr. 

 D. W. Coquillett. This small red-eyed fly with yellow thorax 

 and dark abdomen, and wings crossed with 2 dusky bands, is not 

 uncommon about decaying fruit. 



Harvest fly, Tibicen rimosa. A very pretty harvest fly, or 

 cicada, belonging to the same genus as the periodical cicada was 

 common in the vicinity of Orono from the middle to the latter 

 part of July. (A photoghaph of this species is given as Fig. 



* Proceedings of the Entomological Society of Washington, Vol. VIII 

 Nos. 1-2. 



