854 PROCEEDINGS OF THE ENTOMOLOGICAL SOCIETY OF WASHINGTON marily in June and July. One individual, displaying an ulcer on a finger resulting from a painful bite by one of these bugs, reported seeing a dozen or so of them in his yard and home, perhaps attracted by porch lights, within a few days' time in mid-June. There were no cliff swallow nesting colonies in the immediate vicinity of his home. We are unable to explain the high personatus population in 1981. Eads et al. (1980) point out the desirability of reducing human annoyance from swallow bugs by swallow colony management around dwellings. Removing the nests and spraying the immediate area with an approved insecticide after the birds depart in the fall would prevent the buildup of excessive swallow bug populations. Cliff swallows build nests rapidly and are not discouraged or handicapped by being forced to rebuild nests in the spring. Control of the swallow bugs in urban areas would also possibly result in a reduction in the numbers of R. personatus. How-ever, since the adults are strong fliers, some dispersal into urban areas from natural rural nesting sites such as cliff faces, bridges, and culverts would likely continue. R. B. Eads (retired) and E. G. Campos, Division of Vector-Borne Viral Diseases, Center for Infectious Diseases, Centers for Disease Control, Public Health Service, U.S. Department of Health and Human Services, Fort Collins, Colorado 80522. PROC. ENTOMOL. SOC. WASH. 85(4), 1983, pp. 854-856 Note Limnoporus notabilis (Drake and Hottes) from central Arizona (Hemiptera: Heteroptera: Gerridae) Limnoporus notabilis (Drake and Hottes) has been reported from California, Colorado, Idaho, Iowa, Montana, Oregon, Utah, and Washington (Drake, C. J. and F. C. Hottes, 1925. Ohio J. Sci. 25: 46-50; Drake, C. J. and H. M. Harris, 1928. Ohio J. Sci. 28: 269-276) and Arizona, South Dakota, Wyoming, and British Columbia (Polhemus, J. T. and H. C. Chapman, 1979. Bull. Calif. Insect Surv. 21: 58-69). Drake and Harris (1934. Ann. Carnegie Mus. 23: 179-240) described L. no-tabilis as a "common western species inhabiting the streams of the Pacific Coast and Rocky Mountain states" and "frequently occurring in large schools on the surface of mountain lakes." Polhemus and Chapman report that in northern and central California the species is found at "low to moderate elevations." I recently discovered a well-preserved series of 1 9 specimens of L. notabilis in the Arizona State University museum collection. The specimens were collected at Woods Canyon Recreation Area, Cococino Co., Ariz, in a stream on 14 April 1971 by H. R. Rush. Six males and four females are fully macropterous; five males and four females have wings which cover the seventh abdominal tergite. Woods Canyon, although at a low temperate latitude (34°20'), is at an elevation of over 7000 feet (Brown, D. E. et al., 1981. Drainage Map of Arizona). The series of specimens shows the marked sexual dimorphism which, although characteristic of the species and opposite of that found in most species of Gerridae (Calabrese, unpublished data)— i.e. here the males are larger than the females—
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