 | 1881 - 284 páginas
...red and slightly covered with line cottony down. (Fitch.) The females of these insects do not extrnde their eggs. Clinging closely to the leaf with their...and protected by the closed wings of the dead fly. 1 have met with the dead females thus adhering to the leaves the first of July, and have noticed the... | |
 | United States Entomological Commission - 1890 - 1078 páginas
...which are dusky gray, ite abdomen dusky red and slightly covered with fine cottony down. (Fitch.) " The females of these insects do not extrude their eggs. Clinging closely te the leaf with their heads towards its base, they die, their distended abdomens appearing like a... | |
 | United States Entomological Commission, Alpheus Spring Packard - 1890 - 1060 páginas
...which are dusky gray, its abdomen dusky red and slightly covered with fine cottony down. (Fitch.) " The females of these insects do not extrude their eggs. Clinging closely t« the leaf with their heads towards its base, they die, their distended abdomens appearing like a... | |
 | Percy Nicol Annand - 1928 - 160 páginas
...significant in comparing the Maine species) are not apparent. Fitch's description of oviposition follows : The females of these insects do not extrude their...eggs. Clinging closely to the leaf with their heads toward its base, they die, their distended abdomens appearing like a little bag filled with eggs. The... | |
 | Maine Agricultural Experiment Station - 1909 - 458 páginas
...expelled. As Fitch himself accurately recorded what I have observed three seasons (1905, 1907, 1909*) "the females of these insects do not extrude their...and protected by the closed wings of the dead fly." Such an egg cluster comprises about 100 eggs. The eggs of the Chermes which settled on the pine needles... | |
 | 1928 - 342 páginas
...significant in comparing the Maine species) are not apparent. Fitch's description of oviposition follows : The females of these insects do not extrude their...eggs. Clinging closely to the leaf with their heads toward its base, they die, their distended abdomens appearing like a little bag filled with eggs. The... | |
 | Percy Nicol Annand - 1983 - 152 páginas
...significant in comparing the Maine species) are not apparent. Fitch's description of oviposition follows: The females of these insects do not extrude their...eggs. Clinging closely to the leaf with their heads toward its base, they die, their distended abdomens appearing like a little bag filled with eggs. The... | |
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The females of these insects do not extrude their eggs. Clinging closely to the leaf with their heads towards its base, they die, their distended abdomens appearing like a little bag filled with eggs. The outer skin of the abdomen soon perishes and disappears,... 