April, '10] ROSEXFELD : LOUISIANA INSECTS 215 



Calandra granaria Linn., Alphitobius diaperinus Panz., Bhizopertha 

 pusilla Fab. and others. 



Our three most common cockroaches are the American cockroach, 

 Periplaneta amencana Linn., a closely related species, P. hriinnea 

 Burm., and the cosmopolitan croton bug, Blatella germanica Linn. 



Insects Affecting Deciduous Fruits 



The same Coccids as were noted in the article by Newell and Rosen- 

 feld, mentioned above, have been noticed during the past two years, 

 and none have increased to an alarming extent. The San Jose scale, 

 Aspidiotus perniciosus Comst., has been held well in check in the 

 nurseries in which it occurs, and we have not been able to locate any 

 newly infested districts for the West Indian peach scale, Aulacaspis 

 pentagona Targ. 



In September last, Mr. C. W. Flynn, while inspecting nurseries in 

 New Orleans, sent in some Coccids on young fig trees from China, 

 said by the nurserj^man to have been brought to him by a sea-captain. 

 Doctor Howard identified these scale insects as Aster olecanuim pus- 

 tulans Ckll. Mrs. Fernald, in her catalogue, gives as the habitat of 

 this insect, Jamaica, Porto Rico, Antigua, Brazil, Br. Guiana, Gre- 

 nada, Monserrat, Mexico and Florida. As this is a new insect to us 

 in Louisiana, we had the nurseryman destroy the few fig trees infested. 



The peach-borer, Sanninoidea exitiosa Say, and the plum-curculio, 

 Conotrachelns nenuphar Herbst, have been about normally abundant, 

 but the shot-hole borer, Scolytus rugulosus Ratz., has done more than 

 its usual damage, especially to peach, this being doubtless due to the 

 fact that a late freeze last spring materially weakened a number of 

 peach trees which were pretty well advanced. 



The woolly apple aphis. ScMzoneura lanigera Hausm., and the ap- 

 ple-tree tent caterpillar, Malacosoma americana Fab., have been very 

 little in evidence of late. This is also true of the American procris, 

 Harrisina americana Guer. 



An insect which we did not before know to occur in the state is 

 the strawberry root louse, Aphis forbesi Weed. In April, 1908, a 

 few specimens were sent in, and an investigation by the writer re- 

 vealed the fact that it was very common all over Tangipahoa Parish, 

 our principal strawberry section. During the past spring this insect 

 was also found by the writer at Baton Rouge. 



The destructive mealy-bug, Pseudococcus citri, Risso, is commonly 

 abundant on figs, Japanese persimmons, and oranges. 



