. Fresh-water biology. Freshwater biology. AQUATIC INSECTS 935 3 (2) The median vein but once forked; the branches of vein Cui all simple. Climacia. 4 (i) Veins of the wing disc extending outward in straighter lines, forks fewer and less symmetrical; antennae cylindric serrate, or pectinate Family Sialididae . 5 5 (6) Fourth segment of the tarsus bilobed; posterior branch of the radial sector forked. No ocelli Fig. 1390. Fore wings of two neuropterous insects, Sialis (above) and Climacia (below). A, humeral cross-vein; sU stigma; designations of principal veins as in Fig 1386. 6 (5) F
. Fresh-water biology. Freshwater biology. AQUATIC INSECTS 935 3 (2) The median vein but once forked; the branches of vein Cui all simple. Climacia. 4 (i) Veins of the wing disc extending outward in straighter lines, forks fewer and less symmetrical; antennae cylindric serrate, or pectinate Family Sialididae . 5 5 (6) Fourth segment of the tarsus bilobed; posterior branch of the radial sector forked. No ocelli Fig. 1390. Fore wings of two neuropterous insects, Sialis (above) and Climacia (below). A, humeral cross-vein; sU stigma; designations of principal veins as in Fig 1386. 6 (5) Fourth segment of the tarsus simple, cylindric; posterior branch of the radial sector simple. Three ocelli 7 7 (8) Hind angles of the head rounded; the median vein two-branched; antennae with segments enlarged distally. . ChauUodes. 8 (7) Hind angles of the head bearing a sharp angulation or tooth; median vein three-branched; segments of the antennae cylindric. Corydalis. 1(4) 2(3) 3(2) 4(1) S(6) Larvae Mouth parts adapted for piercing and sucking, prolonged to half the length of the body; Hving on fresh-water sponges. ... 2 Setae on the dorsum of the thorax pedunculate (, the setigerous tubercles elevated considerably above the level of the integ- ument) ; the outer covering of the pupal case spun by the larva is of a beautiful hexagonal mesh Climacia. Thoracic setae sessile; the outer covering of the pupal case is close woven. Sisyra. Mouth parts adapted for biting 5 The last abdominal segment produced in a long, median, laterally fringed tail-like process; a pair of lateral filaments on abdominal segments 1-7 Sialis,. 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 resemble the original Ward, Henry Baldwin, 1865-1945; Whipple, George Chandler, 1866-1924. joint author. New York, John Wiley & sons, inc. ; [etc. ,etc. ]
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectfreshwa, bookyear1918
