 | Biology - 1876 - 800 pages
...the head and thorax of the pupa arise from minute disks attached to the smaller nerves or tracheae in the body of the worm. This is paralleled by the...caterpillar into the chrysalis of the butterfly. Our house fly having as a maggot lived a life of squalor, immersed in its revolting food, with its new... | |
 | Minnesota State Horticultural Society - Fruit-culture - 1895 - 536 pages
...form, turns brown and hard, forming a case, within which the larva transforms into that of the pupa. Our house-fly having as a maggot lived a life of squalor, immersed in its revolting food, appears after a short pupa-sleep of from five to seven days, as a winged being, with legs and wings... | |
 | Minnesota State Horticultural Society - Gardening - 1895 - 538 pages
...form, turns brown and hard, forming a case,within which the larva transforms into that of the pupa. Our house-fly having as a maggot lived a life of squalor, immersed in its revolting food, appears after a short pupa-sleep of from five to seven days, as a winged being, with leg's and wings... | |
 | University of Minnesota. Agricultural Experiment Station - Agriculture - 1896 - 1036 pages
...barrel-shaped form, turns brown and hard, forming a case, within which the larva transforms itself into a pupa. Our house-fly having, as a maggot, lived a life of squalor, immersed in its revolting food, appears after a short pupal sleep of from five to seven days, as a winged being with legs and wings... | |
 | Minnesota. State Entomologist - Insects - 1896 - 292 pages
...barrel-shaped form, turns brown and hard, forming a case, within which the larva transforms itself into a pupa. Our house-fly having, as a maggot, lived a life of squalor, immersed in its revolting food, appears after a short pupal sleep of from five to seven days, as a winged being with legs and wings... | |
 | University of Minnesota. Agricultural Experiment Station - Agriculture - 1896 - 1124 pages
...barrel-shaped form, turns brown and hard, forming a case, within which the larva transforms itself into a pupa. Our house-fly having, as a maggot, lived a life of squalor, immersed in its revolting food, appears after a short pupal sleep of from five to seven days, as a winged being with legs and wings... | |
 | Minnesota. State Entomologist - Insects - 1896 - 286 pages
...barrel-shaped form, turns brown and hard, forming a case, within which the larva transforms itself into a pupa. Our house-fly having, as a maggot, lived a life of squalor, immersed in its revolting food, appears after a short pupal sleep of from five to seven days, as a winged being with legs and wings... | |
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... openings, the edges of which are armed with fine projections, forming a rude sieve for the exclusion of dust and dirt. When about to transform into the pupal state, the body contracts into a barrel-shaped form, turns brown and hard, forming a case,... 