THE LIFE HISTORY OF GERRIS REMIGIS (HETEROPTERA: GERRIDAE) IN A SMALL STREAM IN SOUTHERN ONTARIO

1977 ◽  
Vol 109 (2) ◽  
pp. 221-228 ◽  
Author(s):  
D. F. Galbraith ◽  
C. H. Fernando
Keyword(s):  
Life History ◽  
Hind Limb ◽  
Small Stream ◽  
Southern Ontario ◽  
History Of

AbstractNymphs and adults of Gerris remigis Say were collected for 7 months from a stream with only this species of Gerridae. The colour markings of the nymphal stadia are described and illustrated. Measurements of antennal and hind limb segments are given and these can be used to distinguish successive instars.

The Life History of Aptesis basizona (Grav.) on Neodiprion sertifer (Geoff.) in Southern Ontario

1961 ◽  
Vol 93 (11) ◽  
pp. 1005-1010 ◽  
Author(s):  
K. J. Griffiths
Keyword(s):  
Life History ◽  
Neodiprion Sertifer ◽  
Northern Europe ◽  
Southern Ontario ◽  
History Of

Aptesis biasizona (Grav.) is a common and widely distributed parasite of diprionid sawflies in central, western, and northern Europe, with parasitism varying from three to 90 per cent on different hosts and in different areas. One of these sawflies, Neodiprion sertifer (Geoff.), is very commonly attacked, with parasitism of 30 to 80 per cent in Czechoslovakia, 10 to 52 per cent in Hungary, and 17.5 to 40 per cent in Sweden (Morris et al., 1937).

Life History of the Pine Tip Moth, Rhyacionia adana Heinrich, in Ontario (Lepidoptera: Olethreutidae)

1960 ◽  
Vol 92 (10) ◽  
pp. 724-728 ◽  
Author(s):  
J. Lynton Martin
Keyword(s):  
Life History ◽  
Host Plants ◽  
Pine Plantations ◽  
Study Program ◽  
Southern Ontario ◽  
Tree Damage ◽  
History Of ◽  
Seasonal History

Infestations of Rhyacionia adana Heinrich have almost certainly been common in young pine plantations throughout southern Ontario for a number of years, but, because resultant tree damage has been confused with that of the European pine shoot moth, R. buoliana (Schiff.), the species itself has been overlooked.Although R. adana was described in 1923 (Heinrich, 1923), the seasonal history has never been worked out, and even the host plants were not recorded until 1959 (Martin, 1959). In 1957, a study program was begun to learn the life history and habits of the species in Ontario, the results of which are presented here.

Life history and biology of the riffle bug Rhagovelia obesa Uhler (Heteroptera: Veliidae) in Southern Ontario

1971 ◽  
Vol 49 (4) ◽  
pp. 435-442 ◽  
Author(s):  
Lanna Cheng ◽  
C. H. Fernando
Keyword(s):  
Life History ◽  
Egg Laying ◽  
Unusual Feature ◽  
Southern Ontario ◽  
Worldwide Distribution ◽  
First Instar ◽  
History Of ◽  
First Time ◽  
Life History Study

The life history of Rhagovelia obesa (Heteroptera: Veliidae) was investigated using field collected and laboratory reared material. The nymphal instars and adults are described and figured. This is the first life-history study of Rhagovelia or its related genera Tetraripis and Trochopus. These genera together have almost a worldwide distribution and are characterized by a unique swimming plume beating underwater. Four nymphal instars occur instead of the usual five. The overwintering stage is the egg, another unusual feature for aquatic Hemiptera. The site(s) of egg laying have not been located. For the first time Rhagovelia has been raised in the laboratory from first instar to adult.

Experimental life history of Echinostoma cinetorchis

1990 ◽  
Vol 28 (1) ◽  
pp. 39 ◽  
Author(s):  
S H Lee ◽  
J Y Chai ◽  
S T Hong ◽  
W M Sohn
Keyword(s):  
Life History ◽  
History Of
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