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Objective 7. The photographic atlas from which a manuscript for the handbook of pupal exuviae of Chironomidae will be developed has been further updated to include photomicrographs of most taxa now known from New Mexico. In order to develop a publishable manuscript these photomicrographs are being converted to line drawings which are much more legible in publication than half tone photographs. The line drawings are being prepared by scanning the photomicrographs into the computer using a flatbed scanner by importing a gray scale scan into memory and then converting it into a line drawing by using a layering technique (Adobe Photoshop 4.0) comparable to using tracing paper over a photo in making a conventional drawing. Conversion of these line drawings from the photographic atlas is in progress. In several instances outstanding published figures have been used by redrawing them to conform to material from New Mexico. The results to date are shown in Appendix 5. Not all of the samples taken during the study have been examined. As these are inventoried and possible new taxa added, the atlas and the manuscript will be updated before the final manuscript is assembled for publication. As identifications have progressed earlier record sheets have been modified by corrections of taxa names which have been elucidated through new material taken at other sites. Several species identified as "sp. 1-P, sp. 2-P", etc., now have species names associated and are corrected on the previous record sheets. Two species of chironomids new to science from this study have been recently described. These are given in Sublette et al. (1998). Aspects of their ecology have been described in Stevens et al. (1998). Preliminary keys to the larval and adult trichopteran families occurring in New Mexico have been generated (Appendix 6). The key to larvae is that of Wiggins (1996) and the key to adults is that of Merritt and Cummins (1996); both keys have representative New Mexico families highlighted. The figures in each of these publications are the best available to entomologists and fishery practitioners. Therefore, a copy of each of these publications should be available whenever the appended keys are used. As a recommendation, copies of these two works with appropriate microscopical aids should be readily available to appropriate fisheries personnel throughout New Mexico. Preliminary keys (Wiggins, 1996) to the genera of larval caddisflies of New Mexico have also been included. Caddisfly genera reported in the open literature as well as those identified from IBI collections have been highlighted in the individual family keys. With one exception, only families with genera reported from New Mexico have been included. The exceptional family is Phryganeidae; without doubt representatives of this taxon occur in New Mexico. The preliminary New Mexico keys to the family level include all the North American entries of Wiggins (1996) and Merrittt and Cummins (1996). A number of families and genera most certainly occurring in New Mexico but not yet reported should be included in any preliminary working key. Realizing new records at the family and generic level is possible using these expanded North American keys. Once the remaining adult material from UV-night light and sweep-net collections has been identified, more definitive keys will be generated. Wherever possible, keys to the species level will be forthcoming. Taxonomic keys to the Plecoptera (stoneflies) and Ephemeroptera and lists of known species of these two orders are given in appendices 7 and 8, respectively.