. Insect architecture. Insects. MINING CATERPILLARS. 237 polyanthus, one of those mining-caterpillars may very frequently be found. It is, however, considerably different from the preceding, for there is no black trace—no river to the valley which it excavates : its ejectamenta, being small and solid, are seen, when the leaf is dried, in little black points like grains of sand. This miner, also, seems more partial than the pre- ceding to the midrib and its vicinity, in consequence of which its path is seldom so tortuous, and often appears at its extremity to terminate in an area, com- parative
. Insect architecture. Insects. MINING CATERPILLARS. 237 polyanthus, one of those mining-caterpillars may very frequently be found. It is, however, considerably different from the preceding, for there is no black trace—no river to the valley which it excavates : its ejectamenta, being small and solid, are seen, when the leaf is dried, in little black points like grains of sand. This miner, also, seems more partial than the pre- ceding to the midrib and its vicinity, in consequence of which its path is seldom so tortuous, and often appears at its extremity to terminate in an area, com- paratively extensive, arising from its recrossing its previous tracks.*. Leaf of the Primrose (Primula veris), mined by a caterpillar. Swammerdam describes a mining caterpillar which he found on the leaves of the alder, though it did not, like those we have just described, excavate a winding gallery; it kept upon the same spot, and formed only an irregular area. A moth was pro- duced from this, whose upper wings, he says, " shone and glittered most gloriously with crescents of gold, silver, and brown, surrounded by borders of delicate ; Another area miner which he found on the leaves of willows, as many as seventeen on one leaf, producing what appeared to be rusty spots, was metamorphosed into a very minute weevil (Curculio Rhinoc). He says he has been informed,. 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 Rennie, James, 1787-1867. London, M. A. Nattali
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Keywords: ., bookcentury1800, bookdecade1840, booksubjectinsects, bookyear1846
