. Bulletin - United States National Museum. Science. BULLETIN 39, UNITED STATES NATIONAL MUSEUM. [128] figure, Notlirus ovivorus lias been observed by Dr. Packard to eat the €ggs of the Canker Worm. The members of the family Gamasidie are parasitic upon animals, but chiefly upon insects. The Hydrachnidse are parasitic also upon the aquatic insects, and also affect fish or mussels or occur on fresh-water j^lants. One of the most imjDortant families of mites is the Trombidiidise which includes a large number of species, some of which occur in immense num- bers. Most of them are vegetable feeders
![. Bulletin - United States National Museum. Science. BULLETIN 39, UNITED STATES NATIONAL MUSEUM. [128] figure, Notlirus ovivorus lias been observed by Dr. Packard to eat the €ggs of the Canker Worm. The members of the family Gamasidie are parasitic upon animals, but chiefly upon insects. The Hydrachnidse are parasitic also upon the aquatic insects, and also affect fish or mussels or occur on fresh-water j^lants. One of the most imjDortant families of mites is the Trombidiidise which includes a large number of species, some of which occur in immense num- bers. Most of them are vegetable feeders Stock Photo](https://c8.alamy.com/comp/RGW9BR/bulletin-united-states-national-museum-science-bulletin-39-united-states-national-museum-128-figure-notlirus-ovivorus-lias-been-observed-by-dr-packard-to-eat-the-ggs-of-the-canker-worm-the-members-of-the-family-gamasidie-are-parasitic-upon-animals-but-chiefly-upon-insects-the-hydrachnidse-are-parasitic-also-upon-the-aquatic-insects-and-also-affect-fish-or-mussels-or-occur-on-fresh-water-jlants-one-of-the-most-imjdortant-families-of-mites-is-the-trombidiidise-which-includes-a-large-number-of-species-some-of-which-occur-in-immense-num-bers-most-of-them-are-vegetable-feeders-RGW9BR.jpg)
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. Bulletin - United States National Museum. Science. BULLETIN 39, UNITED STATES NATIONAL MUSEUM. [128] figure, Notlirus ovivorus lias been observed by Dr. Packard to eat the €ggs of the Canker Worm. The members of the family Gamasidie are parasitic upon animals, but chiefly upon insects. The Hydrachnidse are parasitic also upon the aquatic insects, and also affect fish or mussels or occur on fresh-water j^lants. One of the most imjDortant families of mites is the Trombidiidise which includes a large number of species, some of which occur in immense num- bers. Most of them are vegetable feeders, but some species feed on the eggs of insects. The genus Trombidium includes a number of the Eed Mites which feed on insects in all their stages. The Locust Mite, Trombidium locustarum Eiley, is one of the most interesting as well as one of the most important of our locust enemies, and will serve to illustrate the habits of the group. It differs so much in infancy and maturity that it has been referred to different genera and is known under different names. The mature form lives on the ground and feeds on all sorts of animal or decomposing vegetable matter, and wherever the gTound is filled with locust eggs these afford an abundance of food and the mites flourish and multiply rapidly. In the spring the female lays 300 or 400. Fig. Ii5.—Nothrus ovivorus Packard.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. United States National Museum; Smithsonian Institution; United States. Dept. of the Interior. Washington : Smithsonian Institution Press, [etc. ]; for sale by the Supt. of Docs. , U. S. Govt Print. Off.