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Theridion Elevatum
''Theridion'' is a genus of Theridiidae, tangle-web spiders with a worldwide distribution. Notable species are the Theridion grallator, Hawaiian happy face spider (''T. grallator''), named for the iconic symbol on its abdomen, and ''Theridion nigroannulatum, T. nigroannulatum'', one of few spider species that lives in sociality, social groups, attacking prey en masse to overwhelm them as a team. Identification Spiders in this genus are about as long or longer then they are wide. Their chelicerae have two or less teeth on the front edge and none on the back edge. The front leg is the longest in both genders, but the next longest is the second leg in males and the fourth leg in females. The epigyne can vary, but the pedipalp has a median Glossary_of_spider_terms#apophysis, apophysis and a Cribellum#Ancestral trait, colulus is absent from both genders. In several species, the males have mastidia (projections) on the chelicerae. ''Theridion'' has the anterior eye row sligh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Theridion Grallator
''Theridion grallator'', also known as the Hawaiian happy-face spider, is a spider in the Family (biology), family Theridiidae that resides on the Hawaiian Islands. ''T. grallator'' gets its vernacular name of "Hawaiian happy-face spider" from the unique patterns superimposed on its abdomen, specifically those that resemble a human Smiley, smiling face. ''T. grallator'' is particularly notable because of its wide range of Polymorphism (biology), polymorphisms that may be studied to allow a better understanding of evolutionary mechanisms. In addition to the variety of color polymorphisms present, ''T. grallator'' demonstrates the interesting quality of diet-induced color change, in which its appearance temporarily changes as it metabolizes various food items. Description ''T. grallator'' is a small spider with a body size less than 5 millimeters long. It has characteristically long and slender legs and a translucent yellow body. These distinctly long legs lead ''T. grallator'' t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
