. Alaska. Natural history -- Alaska; Scientific expeditions; Alaska. J4 ALASKA INSECTS (Tiarclla trif aliala), yellow violet [Viola glabella), and Os- morrhiza nuda. Undoubtedly, of all the plants in bloom at this season the greatest favorite with flower-visiting insects was the salmon- berry. Its long period of blooming, its widely opened blossoms, and its abundant, easily accessible nectar, render it an attractive rendezvous for insects. The pendant form of the flowers is also important, as the flaring corolla sheds the rain, and in this way not only protects the nectaries, but also provides
. Alaska. Natural history -- Alaska; Scientific expeditions; Alaska. J4 ALASKA INSECTS (Tiarclla trif aliala), yellow violet [Viola glabella), and Os- morrhiza nuda. Undoubtedly, of all the plants in bloom at this season the greatest favorite with flower-visiting insects was the salmon- berry. Its long period of blooming, its widely opened blossoms, and its abundant, easily accessible nectar, render it an attractive rendezvous for insects. The pendant form of the flowers is also important, as the flaring corolla sheds the rain, and in this way not only protects the nectaries, but also provides a shelter for visiting insects during the frequent showers. In the short time at our dis- posal it was of course impos- sible to do more than make a hasty collection of the more conspicuous insects, but the re- sults show what a rich harvest awaits more thorough investi- gation. More than 200 species were collected, of which 34 were new to science, several new to America, and many rep- resented additions to the fauna of Alaska. As usual, the Diptera form the predominant feature of the insect fauna, not only in spe- cies, but also in abundance of individuals. At hours when the sun shone the air fairly swarm- ed with Diptera and other flying insects. The most abundant flies were Bibio variabilis and Dilophus scrralicollis, the latter occurring in countless numbers in the blossoms of the salmon- berry. The same flower furnished a harboring place for num- bers of Syrphidae, of which nine species were secured : Chilosia ?plutonia Hunter, Melanostoma mellinum(L.), Plalychirus pelta- tus (Meigen), Plalychirus albimanus Fabr., Syrphus diversifes Macq., Syrphus amalopis O. S., Baccha obscuricomis Loew., Sphegina infuscata Loew., Brachyopa nolala O. S., Sericomyia. IG. 4. FOREST NEAR 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 resemb
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