PARTIAL LIFE-HISTORY OF DICHOGAMA REDTEN-BACHERI, LED.

1900 ◽  
Vol 32 (9) ◽  
pp. 271-272 ◽  
Author(s):  
Harrison G. Dyar

The Pyralid genus Dichogama has not yet been reported from United States territory on the mainland, but at least three species occur in southern Florida. The following notes were made on the larva of one of them, D. Redtenbacheri.Stage II. (?)—Head flat before clypeus high, mouth pointed; luteous, ocelli black; width .4 mm. Body a little flattened, translucent, yellowish, a geminate lateral brown stripe. Cervical shield large, colourless, brown dotted on the tubercles and on lateral edge; anal plate small, not marked. Tubercles small, brown; setæ long, stiff, pale. Skin sparsely granular; segments scarcely annulate.

1892 ◽  
Vol 24 (11) ◽  
pp. 270-273
Author(s):  
E. W. Doran

Although this is a common insect in many parts of the United States, it is not generally found in great numbers in any locality, and, notwith standing its general distribution, the various staes of the insect seem not to have been describe or figured.While I am not yet able to clear up all the points in its history, I have studied the insect in all its stages, though I have not reared it from the egg to maturity, on account of the time required for it to develop—in all probability three years.


1891 ◽  
Vol 23 (5) ◽  
pp. 106-108
Author(s):  
Harrison. G. Dyar

The preparatory stages of this species do not seem to have been described. Mr. Hy. Edwards in his catalogue gives eleven references, but in none is the egg mentioned, or any but a single larval stage, and in only one the pupa. It will, therefore, not be amiss to briefly describe the several stages here. I would like first to call attention to the remarkable fertility of the insect in question, at least in Southern Florida where I met with it.


1870 ◽  
Vol 2 (4) ◽  
pp. 43-44
Author(s):  
V. T. Chambers

Seeing in the last number of the Canadian Entomologist, a description of the egss of A. Luna, reminds me to ask of you the explanation of a curious circumstance in the life-history of one bred by me from the larva last year. I will premise that I am writing without my notes, and therefore cannot give figures accurately, but can give the facts. There may be nothing very strange about it, but two of the best entomologists in the United States inform me that it is entirely new to them. It is this:–Some time in the latter part of the summer of 1868 I took, feeding on walnut leaves, a mature larva of A. Luna; from which I did not houi to rear the mature insect, because I counted on the larva over twenty eggs like those of a Tachina, Underneath some of the eggs I could discern with a lens a minute opening through which the fly-larva had entered the body of the Luna larva. The skin of the latter was more or less discoloured under each egg, but under some-under many in fact there was a dense black spot, sometimes two lines in diameter.


1960 ◽  
Vol 92 (7) ◽  
pp. 500-516 ◽  
Author(s):  
W. J. Turnock

The larch sawfly is a common defoliator of trees of the genus Larix throughout the Holarctic Region. In North America it has been reported from every province of Canada but in the United States it is confined to the northeastern States, the Lake States, and north-western Montana (Drooz, 1956). The northern limits of distribution have not been determined, but extend as far as 61° N. lat. north of Saskatchewan.


1877 ◽  
Vol 4 (11) ◽  
pp. 481-496
Author(s):  
Searles V. Wood

From no part of the world have we of late years derived more additions to the Geological Record than from North America. Besides important additions to the earliest pages of that record, the rich collections made by the United States Surveyors, both of fauna and flora, from the Cretaceous, Eocene, and Miocene deposits, have thrown much light upon the life history of the Earth; and it is even contended that they have bridged over the interval which, notwithstanding the Maestricht beds, the Pisolitic, and the Faxoe Limestones, still remains sharply marked between the Cretaceous and Tertiary formations of Europe so far as they have yet been examined.


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