Electronic field guide to AQUATIC MACROINVERTEBRATES of SMALL STREAMS in Eastern Massachusetts

Digital Key to the Aquatic Insects of North Dakota includes the keys for the identification of the Hydrophilidae family and its genus, and also a glossary of terms. 

A page were you find keys for some families of coleopterans

Science News portal

Science News

aplicaciones para dispositivos moviles

aplicaciones apra dispositivos móviles 

aplicación de Adobe Reader para dispositivos móviles 

cito "The key is separated into 8 sections. The first section is a key to identify the order of the insect you have found. The next sections describe the orders of insects and include keys to identify the families of insects."

cito "Biology Letters publishes short, highly-innovative, cutting-edge research articles and opinion pieces accessible to scientists from across the biological sciences. This Royal Society journal is characterised by stringent peer-review, rapid publication and broad dissemination of succinct high-quality research communications."

Clave para identificación de escarabajos familia Gyrinidae

"Welcome to the new look BiologyBrowser.Produced by Thomson Reuters, BiologyBrowser offers access to evaluated and curated digital resources of interest to the scientific researcher."

cito "Welcome to the Directory of Open Access Journals. This service covers free, full text, quality controlled scientific and scholarly journals. We aim to cover all subjects and languages. There are now 6186 journals in the directory. Currently 2635 journals are searchable at article level. As of today 511179 articles are included in the DOAJ service."

"ZooKeys is a peer-reviewed, open-access, online and print, rapidly produced journal launched to support free exchange of ideas and information in systematic zoology, phylogeny and biogeography. All papers can be freely copied, downloaded, printed and distributed at no charge. Authors and readers are thus encouraged to post the pdf files of published papers on homepages or elsewhere to expedite distribution. There is no charge for color. "