Appendix to the Journals of the Senate and Assembly of the ..session of the Legislature of the State of California . ckladybird, with two reddish-yellow spots on the elytra, near the apex,two spots on the disc, and two blotches of the same color on the for-ward lateral margins. Forehead and edge of thorax yellow. Feeds onpernicious scale in the adult form. Cypress trees (Cupressus macro-carpa) in the suburbs of San Francisco that were seriously infestedwith the cypress mealy bug (Pseudococcus [Dactylopius] ryani) werecleared of the pest by this ladybird. The larva? of this species arecovered w
Appendix to the Journals of the Senate and Assembly of the ..session of the Legislature of the State of California . ckladybird, with two reddish-yellow spots on the elytra, near the apex,two spots on the disc, and two blotches of the same color on the for-ward lateral margins. Forehead and edge of thorax yellow. Feeds onpernicious scale in the adult form. Cypress trees (Cupressus macro-carpa) in the suburbs of San Francisco that were seriously infestedwith the cypress mealy bug (Pseudococcus [Dactylopius] ryani) werecleared of the pest by this ladybird. The larva? of this species arecovered with a cottony secretion and resemble mealy bugs. Exochovius pUati, Mulsant. (Fig. 6.) This is another of our verycommon native ladybirds. It resembles ingeneral appearance the twice-stabbed lady-bird [Chilocorus [bivulnerus] fraternus), butis much larger. It also differs from the lat-ter in having the under side of the extremityof the abdomen black, instead of red. Thelarvaj resemble the twice-stabbed, but arelarger and lighter-colored. Both the larvaand beetle feed upon young black scale, but theyvery ?homus pilati. do not increase Chilocorus (bivulnerus) fraternus (Twice-stabbed ladybird). (PlateIII, Figs. 3, 3a.) This is one of our most important native larvae are most voracious, and destroy great numbers of youngblack, pernicious, and other scales. The young are long and covered BUG VS BUG. 91 with dark spines, crossed with a yellowish band near the about to change into the pupa or chrysalis, the larva selects theunder side of the large branches, where it attaches itself with a gummysubstance to the bark, head downward. In a few days the spiny, larvalskin splits longitudinally, exposing the inclosed chrysalis. When thebeetle issues from the chrysalis it has a black head, with white wing-covers; in a short time this changes to a shiny black, with a red spoton each elytra. In this stage it also preys upon scale insects. Coccinella sanguiiie
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Keywords: ., bookcentury1800, bookdecade1850, bookidappendixtojo, bookyear1853
