. The butterfly book; a popular guide to a knowledge of the butterflies of North America. Butterflies -- North America. Fig. 7.—Head of a moth viewed from in front, a, antenna; c. clypous; e, eye; oc, ocel- lus; p, proboscis. as the Sphingidce, it is produced well in advance of the thorax, but even in such cases it is generally more solidly attached to the ante- rior part of the thorax and is less mobile than in the butterflies. The suctorial apparatus is formed in the moths as in the case of the butter- flies by the peculiar modification of the maxillae into semi-cylindrical and inter- lockin
. The butterfly book; a popular guide to a knowledge of the butterflies of North America. Butterflies -- North America. Fig. 7.—Head of a moth viewed from in front, a, antenna; c. clypous; e, eye; oc, ocel- lus; p, proboscis. as the Sphingidce, it is produced well in advance of the thorax, but even in such cases it is generally more solidly attached to the ante- rior part of the thorax and is less mobile than in the butterflies. The suctorial apparatus is formed in the moths as in the case of the butter- flies by the peculiar modification of the maxillae into semi-cylindrical and inter- locking tubes forming the proboscis. This is enormously produced in some groups, enabling the insect to hover upon the wing over flowers and rob their cups of the honey which they contain. This is especially true of the Sp/iingidcp and some subfamilies of the NocUiidce. In other cases, as in the family of the Satur- niidce and Bomhycidce, the proboscis is very feebly developed or aborted. In fact, we know that some of these creatures are without mouths and that they do not partake of nourishment in the winged state. They are simply animate, winged reservoirs of reproductive energy, and, when the sexual functions have been completed, they die. The eyes of moths are often greatly developed. This is especially true of those species which are crepuscular in their hab- its. The eyes of the heterocera are, as in all other insects, compound. They may be naked, or may be more or less studded with hairs, or lashes, projecting from points lying at the juncture of the various facets making up the organ. This fact has been utilized to some extent in classification. Ocelli, or minute simple eyes, subsidiary to the large compound eyes, occur in some forms, just above the latter, but are generally so concealed by the covering of the head as to be only recognizable by an expert observer. The labial palpi of moths, as of butterflies, consist of three joints, but there is far greater diversity in th
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