ENTOMOLOGY. 307 



The Pterophoridse fly usually on warm, quiet evenings, when they are 

 occasionally attracted to light, though rarely to sugar. In the daytime 

 they are easily Hushed from shrubbery and fly but a short distance. 

 When at rest the wings are held horizontally at right angles to the 

 body with the leathers of the hind wings folded over each other and 

 drawn under the wings. Whether any of the North American species 

 have more than one generation is not known, although in Europe Acan- 

 thodactyla and Monodactyla are said to have two generations, and it is 

 very probable that the same may be true in some cases at least in this 

 country. Of the species noted, the food plants of the following are 

 known: those of the others have not yet been discovered: Trichoptilus 

 lobidactylus on Solidago canadensis; Platyptilia cosmoilacirjla on Stachys, 

 Aquilegia, Geranium, and Orthocarpus; P. acanthodactyla on Stachys, 

 Mentha, Ononis, Calamintha, Pelargonium, and Euphrasia; P. cardui- 

 dactyla on Girsium lanceolatum-; P. orthocarpi on Orthocarpus; P. tesse- 

 radactyla on Gnaphalium dioicum and G. arena Hum; Alucita montana on 

 Solidago; Pterophorus homodactylus on Solidago and Uupatorium pur- 

 pureiim; P. helianthi on Helianthus; P. paleaceus on Vemonia nove- 

 boracensis; P. Jcellicottii ou Solidago; P. monodactylus on Convolvulus 

 sepium, G. arvensis, Ghenopodium album, and Atriplexpatula; P.cupatorii 

 on Eupatoriuni purpureum; P. grisescens on Artemisia; P. inquinatus 

 on Ambrosia artemisicefolia, and Stenoptilia pterodaetyla on Veronica 

 chamcedrys. 



Some strawberry insects, A. L. Qtjaintance {Florida Sta. Bid. 

 42, pp. 551-600, Jigs. .23).— This bulletin treats popularly of the more 

 injurious insects of the strawberry occurring in Florida. Life histories 

 are given more or less in detail and remedies noted. Thrips have been 

 unusually abundant, damaging the strawberry crop throughout the 

 State. Although it affects other field plants during the entire spring 

 and summer, the strawberry plant seems to furnish its favorite food. 

 It attacks different flowers differently. In orange blossoms the petals 

 and stamens are chosen; in strawberries the pistils, resulting in the 

 latter case in preventing or retarding the fertilization of the ovules. 

 On some blossoms the author notes the presence of as many as 65 

 insects. 



Bodies were pressed from females which were regarded as eggs. 

 They measured 0.6 ju by 0.1 /i and were found in numbers of from 2 to 

 5, usually 3, per insect. 



Several remedial mixtures were tried, including a sulphur spray, 

 flowers of sulphur, pyrethrum, pyrethrum and water, pyrethrum decoc- 

 tion, tobacco dust, tobacco decoction, kerosene emulsion, whale oil soap, 

 etc., but none were found to be as efficient as the compound known as 

 "rose-leaf" insecticide. This was efficient both in killing the insects 

 and in not affecting the taste of the berries, which some of the other 

 insecticides invariably did when employed late. Aside from not affect- 

 ing the berries, this insecticide is thought superior, from the fact that 



