ENTOMOLOGICAL NEWS 



AND 



PROCEEDINGS OF THE ENTOMOLOGICAL SECTION 



ACADEMY OF NATURAL SCIENCES, PHILADELPHIA. 



Vol. XVIII. DECEMBER, 1907. No. 10. 



CONTENTS: 



Jones— Pitcher-Plant Insects 413 



Lyman — Thecla calanus and Thecla 420 



edwardsii 420 



Kellogg— Insect Bionomics 426 



Brues— On the Phorid genera Plasto- 



phora and Pseudacteon 430 



Bragg— An undescribed dimorph of the 

 Box Elder Aphid Chaitophorus ne- 



gundinis 431 



de la Torre Bueno and Brimley — On 

 some Heteropterous Hemiptera 

 from North Carolina 433 



Bock — An absolutely sure method of 

 preservation of natural scientific 

 collections against insect enemies 443 

 Rehn— A new species of Ceuthophilus 



(Orthoptera) from Kansas 445 



Wellman— On the distribution and 

 habits of some West African Bees 447 



Editorial 449 



Entomological Literature 450 



Notes and News 450 



Doings of Societies 454 



Pitcher-Plant Insects — II. 

 By Frank Morton Jones, Wilmington, Delaware. 



(Plate XV, XVI.) 



Ezyra ridingsii Riley. 

 In Entomological News, for January, 1904, a paper with 

 the above title gave the results of a few hours spent among the 

 pitcher-plants of Richmond County, North Carolina, in August 

 of the preceding year. In the territory then examined, Sar- 

 raccnia ftova "trumpets'' and Sarraccnia purpurea, our more 

 familiar northern species, were almost equally abundant; Ex- 

 yra ridingsii Riley and E. rolandiana Grt. were also present 

 in numbers, and the larva of the former species was illustrated 

 as found feeding in flava. Opportunity for a more extended 

 stay among these most interesting plants came again this 

 year ; this time at Summerville, South Carolina, where Sar- 

 raccnia flava is especially abundant, but where Sarraccnia 

 purpurea practically does not occur. Here ridingsii was found 

 in numbers, but no rolandiana. which suggests that this latter 

 species prefers — perhaps confines itself to — purpurea, its 

 known food plant in the north. At Summerville another Sar- 

 raccnia, minor Walt, {variolaris Michx.), replaces purpurea. 



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