. Bulletin of the Southern California Academy of Sciences. Science; Natural history; Natural history. Egg and larva of Eucaterva variaria. a. Egg, greatly magnified. b. Mature larva,enlarged X 2. On the 2nd and 3rd segments, in line with the stigmata, there is a small Ijlack triangle. Each segment bears six small black dots on each side, arranged in diagonal pairs, from which arise short colorless hairs. The last three seg- ments are a yellowish green. Stigmata, black, surrounded by a yellow area, the latter not apparent in all specimens. Legs, orange, crossed by several narrow black lines. Th
. Bulletin of the Southern California Academy of Sciences. Science; Natural history; Natural history. Egg and larva of Eucaterva variaria. a. Egg, greatly magnified. b. Mature larva,enlarged X 2. On the 2nd and 3rd segments, in line with the stigmata, there is a small Ijlack triangle. Each segment bears six small black dots on each side, arranged in diagonal pairs, from which arise short colorless hairs. The last three seg- ments are a yellowish green. Stigmata, black, surrounded by a yellow area, the latter not apparent in all specimens. Legs, orange, crossed by several narrow black lines. The terminal joints are tipped with black. Prolegs. and anal prolegs. pale green, spotted with black. Claspers. orange. Head, pale mauve, speckled black, and bear- ing a sparse covering of short colorless hairs. Pupation occurs on the food plant, in a loosely and characteristically meshed cocoon, as shown on Plate 34. The pupa is visible through this mesh. PUPA. Length. 16 to 18 mm. Robust, with prominently protruding antennal and leg cases. Thickest through the 4th abdominal segment. AVing cases, thorax and head, pearly white. Body a pale yellow-green, with dark brownish spots irregularly placed and indistinct. The black markings of the imago are dimly visible or at least suggested through the wing cases. Ocellar ribbon, orange. Stigmata, depressed. The pupa is illustrated on Plate 35. As the Desert willow is a deciduous tree. and the cocoons of the last brood must fall to the ground, it is still doubtful how the winter is passed. A considerable number are. however. known to pass the winter in the cocoon. The larva of this species is so remarkably camouflaged as to make it exceedingly difficult to find. Even when it is beaten from the tree it can not be detected among the fallen leaves until it moves. 99. 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 ma
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