Volume 1

Insects / by William H. Ashmead [and others].

Date:
[1910]
Catalogue details

Licence: In copyright

Credit: Insects / by William H. Ashmead [and others]. Source: Wellcome Collection.

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    About the same flowers darted a swarm of Empidae, comprising three species—Rhamphomyia corvina Loew, Empis triangula sp. nov. Coq., and Microphones favipilosus sp. nov. Coq. Another insect that was extremely common was Bibio variabilis Loew. In sweeping through the grass and low herbage several interesting Mycetophilidae were captured, including Diadocidia borealis sp. nov. Coq. and Sciara tridentata Rubs., the latter originally described from Greenland. Two species of Tipulidte were taken in the same manner; one of these, Rhypholophis affinis Lund., is recorded from Greenland, the other, Tricy- phona vitripennis (Doane), from the State of Washington. Very few beetles were in evidence. Amphichroum testaceum occurred in vast numbers at the flowers of the salmon-berry. Hypnoides musculus Esch. was found beneath stones along the beach, while Podabrus piniphilus Esch. crawled about among the foliage. Of Hymenoptera, the most conspicuous were the bumble-bees, of which several species were noticed visiting the salmon-berry. A single saw-fly, Tenthredo ferrugineipes Nort., was swept from a branch of elder-berry, while an Ichneumon caught among the grass was found by Mr. Ashmead to represent a new species, Philonygus glacialis Ashmead. METLAKATLA, ALASKA Jane 4. —A stop of half a day was made at this interesting missionary village, on Annette Island, at the extreme southeast- ern limit of Alaska territory. The vicinity of the settlement is rather favorable for the operations of the entomologist, since it is open and marshy, with scattered clumps of scrub pine (Pinas contorta) and occasional pools and small lakes. In the marshy ground were found in full bloom many of the most characteristic plants of southeastern Alaska, including Pingui- cala vulgaris, Coptis trifolia, Menyanthes trifoliata, Sieversia calthifolia, Drosera longifolia, Nephrophyllidium cristagalli, E?npetrum nigrum, Rubus chamcemorus, Eysichiton kamtschat- ense, Habenaria hyperborea, and Dodecatheon viviparum. Amidst this array of blossoms Diptera were very numerous, and the net soon yielded over thirty species. At the flowers of
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