Larval, pupal and adult samples of Culoptila cantha, from a large riffle of the Brazos River in north-central Texas from January, 1995 to March, 1997, indicated a predominately trivoltine cycle during both years; the over-wintering generation spanned 6-7 months and warm-season generations spanned 2-3 months. Eggs, larvae of all instars, larval cases, case reconstruction progression and behavior, pupae, and adults are described.

No description available.

No description available.

Thesis (M.S.)--The University of North Carolina at Greensboro, 2008. / Directed by Anne Hershey; submitted to the Dept. of Biology. Title from PDF t.p. (viewed Aug. 26, 2009). Includes bibliographical references (p. 26-31).

Thesis (M.S.) University of Missouri-Columbia, 2005. / The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file viewed on (July 10, 2006) Includes bibliographical references.

The life history and case-making behaviors of Phylloicus ornatus from two springfed first order streams in the Edwards Plateau Bioregion of Texas were studied from January 1998 to November 1999. Field larval, pupal and adult samples and laboratory rearings indicated a multivoltine cycle. First instars differ from late instars in number of labral setae and in having a unique spur-like claw on each lateral hump. Larval development was asynchronous with second through fifth instars and pupae present most months. First instars were present April through July, October and November. Case making of first instar and case reconstruction of later instars extracted from their cases was documented by videophotography.

Four species of net-spinning caddisflies, Hydropsyche simulans Ross, Cheumatopsyche lasia Ross, Cheumatopsyche campyla Ross and Chimarra obscura (Walker) are common in the regulated portions of the Brazos River. Hydropsyche simulans spun capture nets with the largest meshdimensions; the two Cheumatopsyche species' nets had the next largest meshes, and Chimarra obscura spun nets with the smallest dimensions. Cheumatopsyche lasia and C. campyla constructed nets with similar sized meshes. The number of individuals m~2 and standing crop biomass were not significantly different among low, medium, and high velocities. Early hydropsychid instars fed on detritus while later instar H. simulans and C. campyla had larger proportions of animal material. Guts of later instar C. lasia individuals had a greater percentage of algae and diatoms.

Caddisflies (Trichoptera) were collected from over 500 different locations throughout the Interior Highlands (Ozark, Ouachita, Arbuckle, and Wichita Mountains) between March 1990 and March 1994. I systematically sampled representative lotic and lentic habitats in 131 natural watersheds that comprise the 17 different physiographic subregions of this area. From my examination of approximately 60,000 specimens, surveys of regional museum collections, and review of literature records, I document 229 species distributed in 16 families and 58 genera. Included in this total are 27 endemic species and 15 new regional records. Descriptions are provided for a species new to science (Cheumatopsyche robisoni), four larvae (Helicopsyche limnella, H. piroa, Marilia species A, Polycentropus crassicornis) and a female (Helicopsyche piroa). Hydropsyche reiseni Denning, previously known only from the Arbuckle Mountains, is reduced in synonymy with H. arinale Ross. Further, I provide illustrated family, generic, and selected species-level keys that reflect this regional biodiversity.

Life history aspects of the lentic caddisfly, Nectopsyche albida (Walker), were investigated in the field and laboratory using systematic observational and conventional collecting methods. A two cohort population could be recognized based on field collections of approx. 110,000 adults and 2000 larvae made during 1975-1976.Premating swarming is described and consists of "figure 8" display flights performed by males at dusk and dawn. Attracted females then enter the swarm and select a mate. Sperm transfer is completed via a spermatophore in mid-air.Selection of aquatic vascular plants with suprasurface shoots as an oviposition site is favored over areas of water lacking such cues. Hatching larvae disperse to the shallows to develop. Bylate autumn predominantly fifth-instar larvae remain and these return to the deeper waters of the pond to overwinter on the aquatic plant, Myriophyllum exalbescens Fernald. Only about 20% of these late instar larvae move to the shallows to pupate during late spring.New records of nematode (Mermithidae) and water mite (Pionidae) infestations of the adults are also reported.

Thesis (M.S.)--Northern Michigan University, 2009. / Bibliography: leaves 29-33.