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Date: 2010-12-01 23:44:33 Byrrhoidea Hydrology Guadalupe River Geology of Texas Stygoparnus Heterelmis comalensis Stygobromus pecki Comal Springs Edwards Aquifer Geography of Texas Texas San Marcos Texas		Add to Reading List Source URL: www.gpo.gov Download Document from Source Website File Size: 1,67 MB Share Document on Facebook

	FAMILY HETEROCERIDAE (Variegated mud-loving beetles) L. LeSage Heterocerids are represented in Canada and Alaska by 26 species. The adults are nocturnal and come to light in numbers. During the day they hide and make tun DocID: 15aA8 - View Document
	FAMILY ELMIDAE (Riffle beetles) L. LeSage This family comprises about 1100 species worldwide; 32 of them occur in Canada. Elmids are small beetles, usually less than 3 mm long and most are aquatic in both adult and larva DocID: 13Vxy - View Document
	POLLUTION TOLERANCE INDEX (PTI) (Adapted from Volunteer Stream Monitoring: A Methods Manual, United States Environmental Protection Agency, Office of Water, Draft Document #EPA 841-B[removed], November 1997 AND Mitchell an DocID: MfY8 - View Document
	PROTOCOL 4. COLLECTING AND O BSERVIN G A QUATIC I NVER TEBRATES DocID: EVwx - View Document
	Worldwide Bibliography of Aquatic and Semiaquatic Byrrhoidea (Insecta: Coleoptera) DocID: 5wB5 - View Document