Welcome to BugGuide.Net! Butterfly Butterfly flying around a flower Etymology The name is derived from Middle English buterflie, butturflye, boterflye, from Old English butorflēoge, buttorflēoge, buterflēoge, perhaps a compound of butor (beater), mutation of bēatan (to beat), and flēoge (fly).[2] Life cycle Mating Common Buckeye Butterflies The face of a Dryas iulia, more commonly known as a Julia butterfly. Butterflies in their adult stage can live from a week to nearly a year depending on the species. Butterflies may have one or more broods per year. Eggs Butterfly eggs are protected by a hard-ridged outer layer of shell, called the chorion. Butterfly eggs are fixed to a leaf with a special glue which hardens rapidly. Eggs are almost invariably laid on plants. The egg stage lasts a few weeks in most butterflies but eggs laid close to winter, especially in temperate regions, go through a diapause (resting) stage, and the hatching may take place only in spring. Caterpillars Wing development Last instar wing disk, Junonia coenia
Study: ‘App Economy’ has created 466,000 U.S. jobs — like a 21st Century construction sector Source: Conference Board, South Mountain Econ. A new study out today documents the impact of apps on the U.S. economy, concluding that 466,000 jobs have been created by the “App Economy” since 2007 — including programmers, marketers, interface designers, managers and support staff working on apps and infrastructure for platforms including Android, Apple iOS, BlackBerry, Facebook and Windows Phone. The New York Metro area has the largest proportion of jobs in the sector, at 9.2 percent. The Seattle region is fourth, at 5.7 percent, behind San Francisco and San Jose. Broken down by state, Washington is third, at 6.4 percent, with California first at 24 percent and New York second at 7 percent. The research was conducted by economist Michael Mandel for industry group TechNet based on trends in help-wanted ads, in addition to other economic data. (Via CNet News.com)
Interactive Listing of American/Caribbean Butterflies FINDING A SINGLE TAXON: If you know the scientific or common name the easiest way to find it is to: - Hold down the CONTROL KEY (on PC's) or the COMMAND KEY (on Mac's), select "F", then type the name in the window that appears. This will take you to the first instance the name appears on the Master List. If there are several choices use the arrows next to the search box to scroll through them. SEARCH ENGINE: Typing a name into the SEARCH BOX at the top of each webpage allows you to search the entire website for data; It reads all of the CAPTIONS beneath the images, the REFERENCE LIBRARY and GLOSSARY and lists all the instances where the name occurs. OPENING A MAIN SPECIES PAGE: Once you've found a taxon you wish to view select the highlighted COMMON NAME or DISTRIBUTION NOTES which will open the MAIN SPECIES PAGE. - FAMILY THUMBNAILS: Selecting the blue highlighted name within a FAMILY, SUBFAMILY or TRIBE name will display all the thumbnail images for that group.
Raccoon The raccoon ( Though previously thought to be solitary, there is now evidence that raccoons engage in gender-specific social behavior. Related females often share a common area, while unrelated males live together in groups of up to four animals to maintain their positions against foreign males during the mating season, and other potential invaders. Home range sizes vary anywhere from 3 hectares (7 acres) for females in cities to 50 km2 (20 sq mi) for males in prairies. After a gestation period of about 65 days, two to five young, known as "kits", are born in spring. Etymology The mask of a raccoon is often interrupted by a brown-black streak that extends from forehead to nose.[8] The word "raccoon" was adopted into English from the native Powhatan term, as used in the Virginia Colony. Taxonomy Track Evolution Subspecies Four subspecies of raccoon found only on small Central American and Caribbean islands were often regarded as distinct species after their discovery. Description Skeleton Senses
Writerly Life Contact-Poisonous Plants of the World Introduction Touching certain plants can be dangerous. Many plants are highly poisonous when ingested, this is common knowledge. This document wants to give a concise overview of all contact-poisonous plants that may be of interest for travellers. Information about this interesting subject is usually hard to find, as it is scattered across many different sources like scientific works about dermatology or botany, regional field guides, travel literature, and magazines. Latest update: 25 October 2012 (Gympie reviewed). Contents Active PrinciplesEffects and TreatmentGeographical DistributionGuide to Contact-Poisonous Plants of the WorldReferenceIndex Active Principles Plants make use of different techniques to scare away unwanted visitors. Mechanical (not subject of this document). Chemical. Phototoxic. Mechanical-chemical. Electron-microscope image of a stinging hair of Urtica dioica. Allergizing. Effects and Treatment Geographical Distribution Guide to Contact-Poisonous Plants of the World
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