Field Guide to Butterflies of the San Francisco Bay and by Arthur M. Shapiro, Timothy D. Manolis

By Arthur M. Shapiro, Timothy D. Manolis

The California Tortoiseshell, West Coast girl, pink Admiral, and Golden Oak Hairstreak are only the various many butterfly species present in the floristically wealthy San Francisco Bay and Sacramento Valley areas. This consultant, written for either starting and skilled butterfly watchers through one of many nation’s best-known expert lepidopterists, presents thorough, up to date info on all the butterfly species present in this assorted and available zone. Written in energetic prose, it discusses the normal historical past and conservation prestige for those butterflies and whilst presents an built-in view of butterfly biology in response to reports carried out in northern California and worldwide. Compact sufficient to be used within the box, the consultant additionally contains pointers on butterfly observing, images, gardening, and more.

  • Discusses and identifies greater than a hundred thirty species
  • Species bills comprise info on deciding upon butterflies via habit, markings, and host plants
  • Beautiful full-color plates illustrate best and backside perspectives of wings for simpler identification
  • Includes a species record and a glossary

Text by means of Arthur M. Shapiro
Illustrations via Timothy D. Manolis

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Additional resources for Field Guide to Butterflies of the San Francisco Bay and Sacramento Valley Regions (California Natural History Guides, Volume 92)

Example text

But some adults are always flying in warm weather. Normally their reproductive success should be zero, but if pipevine burns — or is cut down to the ground — it regenerates quickly, even in late summer or fall. Any inseminated females in the neighborhood quickly find and oviposit on it. Any year’s early-spring flight consists of individuals representing all of the previous year’s generations and partial generations. ” In urban and suburban areas and in the Central Valley generally, the phenology of the butterfly fauna is markedly different.

How is this possible? ” Among the progeny 22 INTRODUCTION of a single female, some develop directly to the adult with no dormancy; others reared under identical conditions enter pupal dormancy. Some of these will eclose later the same season, while others will lay over until the following spring. In most places the Pipevine Swallowtail is basically spring-bivoltine, and nearly all reproduction occurs before July. But some adults are always flying in warm weather. Normally their reproductive success should be zero, but if pipevine burns — or is cut down to the ground — it regenerates quickly, even in late summer or fall.

The micropyles are often surrounded by a rosette of “cells” resembling the petals of a flower. Some butterfly eggs are modified to admit and hold air (through holes called aeropyles), functioning like little diving bells when the host plant is submerged in water or buried in snow. We rarely find empty butterfly eggshells; most larvae eat them immediately after hatching. In species that lay masses of eggs, the first larvae to hatch often nibble at the chorion of nearby eggs, accelerating their hatching in the process.

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