. Bulletin of the Southern California Academy of Sciences. Science; Natural history; Natural history. lined snlisi Imata] yellow line, bordered below l>y' ;i dark green stripe. Inferior to iliis is n very narrow broken yellow line. Head, brownish to black. Abdomen and prolegs, green. True legs yellowish. The entire body is covered with minute short; yellowish pile. The protruded segments and depressed Intersegmental lines, together with the mottling of yellow and green, are an excellent protective pattern, causing the caterpillar to blend harmoniously with the foliage of its food plain. Pur
. Bulletin of the Southern California Academy of Sciences. Science; Natural history; Natural history. lined snlisi Imata] yellow line, bordered below l>y' ;i dark green stripe. Inferior to iliis is n very narrow broken yellow line. Head, brownish to black. Abdomen and prolegs, green. True legs yellowish. The entire body is covered with minute short; yellowish pile. The protruded segments and depressed Intersegmental lines, together with the mottling of yellow and green, are an excellent protective pattern, causing the caterpillar to blend harmoniously with the foliage of its food plain. Purshia glandulosa. Larva? were found in practically all stages of development, on May 6th, and again on May 20th. Probably the species overwinters as an egg. Pupa. Length, average—8 to 9 mm. Greatest width, to 4 mm. Ground color light tan, on which blotches of dark brown are irregularly scat- tered. A few extremely short simple hairs are scattered over the head region and the dorsum, the remainder of the chrysalis being bare. A few examples show a ground color over the dorsum and wing covers that is of an olive shade. The accompanying cut gives the shape more accurately than would a lengthy description. The egg of a southern race of Tharsalea arota was illustrated in our "Butterflies of California". A large number of larvae of the typical insect were secured this spring (May 6, 1928) on Ribes cereum. From these, the following descriptions were prepared: Tharsalea arota Bdv. Larva, when mature, 15 mm. Greatest width 5 mm. Slug-shaped as with most Lycaenid larvae. Ground color, green, a little darker at the head end. Some examples acquire a rosy blush shortly before pupation. Under magnification the dermis is seen to be sprinkled with minute white tubercles, and to be covered with short single yellowish-white vibrissae arising irregularly from the skin sur- face, not from the tubercles. These are so short as to be barely dis- cernible with the naked eye on the full
Size: 2587px × 966px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, books, booksubjectnaturalhistory
