Transactions and proceedings of the Royal Society of South Australia (Incorporated) . Text-fig. carpenteri, n.(x8). The insect in the naturalposition of rest. sp, 272 which exist in Australia, Tasmania, and New Zealand, andof which I possess a very large Text-fig. 2. Dinotoperla carpenteri, n. sp. Tracheation of wings of last larval instar (x48). For lettering, see text-fig. 3, except cu-a, cubito- anal, and sc-r; subcosto-radial trunk trachea. Text-fig. 2 shows the tracheation of the wings in the lastlarval instar of the Hornsby species, Dinotoperla car pent eri,n.
Transactions and proceedings of the Royal Society of South Australia (Incorporated) . Text-fig. carpenteri, n.(x8). The insect in the naturalposition of rest. sp, 272 which exist in Australia, Tasmania, and New Zealand, andof which I possess a very large Text-fig. 2. Dinotoperla carpenteri, n. sp. Tracheation of wings of last larval instar (x48). For lettering, see text-fig. 3, except cu-a, cubito- anal, and sc-r; subcosto-radial trunk trachea. Text-fig. 2 shows the tracheation of the wings in the lastlarval instar of the Hornsby species, Dinotoperla car pent eri,n. sp. By comparing this with the imaginal wing-venation,shown in text-fig. 3, the manner of fusion of M3 + 4 with•Cuj will be clearly seen. In the larval wing, trachea M3 + 4comes off obliquely downwards from the main stem of M,runs alongside trachea Cux for a short distance, and thendiverges from it again, running freely to the wing the imaginal hindwing, the free basal piece of M3 + 4 takeson the appearance of a cross-vein descending on to Cux atright angles, and, consequently, the free distal portion ofM3 + 4, after its fusion with Cux, appears as if it were atrue branch of this latter vein. It would, indeed, beimpossible to guess the true condition of these v
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectscience, bookyear1912
