Goldfish breeds and other aquarium fishes, their care and propagation - a guide to freshwater and marine aquaria, their fauna, flora and management. With 280 explanatory illustrations, printed with (14579724260)

Identifier: goldfishbreedsot00wolf (find matches)
Title: Goldfish breeds and other aquarium fishes, their care and propagation : a guide to freshwater and marine aquaria, their fauna, flora and management. With 280 explanatory illustrations, printed with the text
Year: 1908 (1900s)
Authors: Wolf, Herman Theodore, 1855-
Subjects: Aquariums Goldfish
Publisher: Philadelphia : Innes & sons
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Smithsonian Libraries



Text Appearing Before Image:
, and the eyes distinct and placed at the sides of the head. Theorder includes the Mosquitoes or Culicidae; Net-winged Midges orBlepharoceridae and Chironomidae; Moth-like Flies or Psychodidae, Crane-flies and False Crane-flies, Black and Buffalo-flies, Horse-flies, Soldier-flies,the Long-legged flies, Snipe-flies and many others. Mosquitoes belong to the family of Culicidae, small flies with narrowwings and long and slender abdomen, of which the males have plumelikeantennae. They frequent moist localities and pass all the stages of develop-ment to the perfect insect in the water, a new brood appearing everythree or four weeks. In depositing the eggs the female rests upon somefloating object with the anterior legs, the middle legs rest on the water andthe posterior legs are crossed to hold the eggs as they are laid, with theirlonger diameter vertical, and glued together to form a raft of often 200 264 FIG. 217. Water-springtail,Podurus aquatica. Enlarged. AQUATIC INSECTS OF FRESHWATER
Text Appearing After Image:
together, which float aboutfive or six days till the em-brios emerge from the underside and at once take to thewater. The larvae keep nearthe sides of the pools or justbelow the water level, asthey are not deepwaterfeeders and must fre-quently come to the sur-face to breathe, the oritaceof the air tube being thrustout of the water. After anumber of molts the pupais developed, which has thehead, thorax, wings and legsfolded in one mass and theabdomen free for navigation.The pupa and nymphstages are passed in a fewdays and when the period otemergence is reached, thenymph case opens overthe back and the perfect insect appears; which, after drying itself, takeswing and disappears. The food of the larvae is vegetal substances and theminute water infusoria. It is only the female insect which has the pro-boscis developed for drawing blood, and both it and the male feed princi-pally by sucking the juices of plants at night, the irritation of the bitebeing due to a venomous salivary secretion