. Bulletin - New York State Museum. Science. Larval mandible of Psorophor a ciliata dibles are extremely well developed, being provided with three major processes. The two ventral ones are coarsely dentate. The triangular labial plate is remarkable because its 17 teeth are at nearly right angles t'o the plate, the two lateral ones on each side being very large. The comb is present on the eighth segment and is re- markable on account of its interesting modification. Its posterior border is marked by a semicircle of about 15 stout scales with large, spatulate bases, each bearing a large,
. Bulletin - New York State Museum. Science. Larval mandible of Psorophor a ciliata dibles are extremely well developed, being provided with three major processes. The two ventral ones are coarsely dentate. The triangular labial plate is remarkable because its 17 teeth are at nearly right angles t'o the plate, the two lateral ones on each side being very large. The comb is present on the eighth segment and is re- markable on account of its interesting modification. Its posterior border is marked by a semicircle of about 15 stout scales with large, spatulate bases, each bearing a large, apical spine and one or two smaller ones on each side. In addition, there are anterior to these larger scales many smaller, beautiful, platelike organs, each margined posteriorly with from about 8 to over 20 fine, rather evenly set spines. The chitinous portion of. Eig. 12 Labial plate of the larva of P s o r o phora ciliata. 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 New York State Museum; New York State Museum. Albany : New York State Education Dept
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectscience, bookyear1887
