| Invertebrates | |||
|---|---|---|---|
| The Invertebrates are animals which lack a backbone. Together with Vertebrates they form the Kingdom Animalia. Invertebrates encompass a varied arch of organisms with levels of complexity in their body structure. So, from a multi-celled animal, such as sponges, it goes to radial symmetry animals, such as jellyfish, and to bilateral symmetry ones with differing variants from flat- and roundworms to annelids, mollusks and arthropods. Finally, starfishes which have unique characteristics combining systems of complex organs and mobile radial symmetry. As far as this site is concerned this arch will come down practically to arthropods, invertebrate animals with an external skeleton and jointed appendages. And within this broad group I will focus on the two traditionally known classes – insects and arachnids. The objective is to add material to provide interesting information about their behaviour and interrelationships with the environment. |
| Insects | |||
|---|---|---|---|
| Insects have a chitinous exoskeleton, two antennae, three pairs of legs and two pairs of wings. Their body is organized in three segments or tagmata: a head, a thorax and an abdomen. It is important to bear in mind these characteristics since people commonly mistake garden “bugs” for insects just because they have a segmented body. Insects are divided in two groups: Paleoptera, the most primitive insects which can not fold the wings back over the abdomen (for ex.: drangonflies) and Neoptera which can do so. This big group encompasses 26 orders divided into families, genus and species, where bees, wasps, flies, cockroaches, beetles, etc.. Insect species will appear sequentially without having into account an order for family, genus and species. Within the document more information will be provided. The only exception are butterflies and moths which follows the original structure of the previous site. Clic on butterfly to go to butterflies’ database | |||
 To butterflies and moths |
 Giant Cicade Dorisinia viridis |
 Polistes canadensis |
 South american Fruit Tree Weevil Naupactus xanthographus |
 Scotobius miliaris |
 Schistocerca cancellata |
 Coptopteryx sp. |
 Camuati WaspPolybia scutellaris |
 Paromoeocerus barbicornis |
 Mallodon spinibarbis |
 Camponotus mus |
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| Arachnids | |||
|---|---|---|---|
| The arachnids have a body organized in two segments or tagmata (a cephalothorax and an abdomen), four pairs of legs, a pair of chelicerae and a pair of pedipalps. They have no antennae. The group includes spiders, scorpions, mites, etc. Arachnid species will appear sequentially without having into account an order for family, genus and species. Within the document more information will be provided. | |||
 Golden Silk OrbweaverNephila clavipes |
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