. Injurious and useful insects; an introduction to the study of economic entomology. Insects; Beneficial insects; Insect pests. THE TIGER-MOTH 6i legs are concealed by the wings. The legs are bent, and only the tibia and tarsus are visible. Just within the base of the feeler a prominence marks the position of the compound eye. On the sides of the body are the wings, the hind pair being almost altogether hidden by the fore pair. The ten segments of the abdomen are visible on the back of the pupa : the first and last but one are of small size, while the last is con- spicuous, and bears a spine-
. Injurious and useful insects; an introduction to the study of economic entomology. Insects; Beneficial insects; Insect pests. THE TIGER-MOTH 6i legs are concealed by the wings. The legs are bent, and only the tibia and tarsus are visible. Just within the base of the feeler a prominence marks the position of the compound eye. On the sides of the body are the wings, the hind pair being almost altogether hidden by the fore pair. The ten segments of the abdomen are visible on the back of the pupa : the first and last but one are of small size, while the last is con- spicuous, and bears a spine- like projection. The moth shows two pairs of broad wings and three pairs of long legs. The wings of the male are connected at the base by a stout bristle which projects from the hind wing, and is held by a hook-like tuft on the fore wing; in the female the bristle is divided into three or four, and is shorter than in the male. When at rest the wings slope, and are somewhat folded. On the head we distinguish the large, black, compound eyes, the feelers, slender and hair- like in the female, pectinate (comb-Uke) in the male. The proboscis is rather short, rolled twice round, and kept out of harm's way; it consists of two flexible, grooved, many-jointed rods (the maxillse), which can be closely applied to one another, and held in place by innumerable hooks, when the two grooves unite to form a tube, along which the sweet juices of flowers can be sucked up. The labial palps stand out like tusks on each side of the proboscis. The hairy body does not show its true form until it is wetted with alcohol, or divested of its covering by careful brushing; the thorax will then be seen to consist mainly of a large mesothorax, which bears the fore wings; the prothorax is reduced to a narrow. Fig. 43.—Mouth-parts of Ijuniet moth. The identity of the parts marked J/?z with so true mandibles has been Please note that these images are extracted from scanned page images that may ha
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectinsects, bookyear1902
