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Helicopsychidae
Helicopsychidae (snail-case caddisflies) are a family of Trichoptera. The name refers to the helix shaped larval cases and they should not be confused with Limnephilidae which sometimes inhabit the snail shells. Their shells range from and are crafted from mineral grains. Their typical habitat is in slow-flowing water in ditches. Helicopsychidae larvae have a comb-like anal hook. Helicopsychidae is divided into two extant genera, ''Rakiura'' and ''Helicopsyche ''Helicopsyche'' is a genus of Trichoptera, the caddisflies. ''Helicopsyche'' contains more than 230 species and are represented on all major faunal regions with highest diversity in tropical and sub-tropical regions. The genus was first describe ...'', and two fossil genera '' Electrohelicopsyche'' and '' Palaeohelicopsyche''. The family contains more than 270 species and are present on all major faunal regions. References Integripalpia {{Trichoptera-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Helicopsyche
''Helicopsyche'' is a genus of Trichoptera, the caddisflies. ''Helicopsyche'' contains more than 230 species and are represented on all major faunal regions with highest diversity in tropical and sub-tropical regions. The genus was first described by Siebold, 1856. The abundance and wide distribution of the genus makes it important to fly fishing anglers, who know it as the "Speckled Peter". Diagnosis Larva: The case is dextrally coiled, with coils usually completely fused. Head is oval in dorsal view and smooth except for long setae and lateral carina. In lateral view the head has a trianguloid shape with the dorsal margin straight or slightly concave. Pronotum is strongly sclerotized while meso-and metantoum are weakly sclerotized. Anal claw with a single row of comb shaped hooks. Abdominal gills either are present or absent. Adult: maxillary palps 2-, 3-, or 4-jointed. Antennae as long as fore wing or two times longer than fore wing length. Cephalic warts variable. One pa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rakiura (insect)
''Rakiura'' is a genus of Trichoptera (caddisfly). The genus contains only one species, ''Rakiura vernale'', which is endemic to New Zealand. ''Rakiura vernale'' represents the most basal taxon within the Helicopsychidae. Identification Larvae have a case that is dextrally coiled, with the coils incompletely fused. The head, in dorsal view, is rounded with marginal carina and covered by loosely distribute setae. The posterior part of frontoclypeal is slender. In lateral view, the head is dorsally straight with eyes erected dorsad. Larvae have a strongly sclerotized pronotum with anterior-pointing megasetae. The mesonotum and metanotum are weakly sclerotized. No abdominal gills are present. An anal claw is present with a single row of comb-shaped accessory hooks. Adults have 2-jointed maxillary palps Pedipalps (commonly shortened to palps or palpi) are the second pair of appendages of chelicerates – a group of arthropods including spiders, scorpions, horseshoe cra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trichoptera
The caddisflies, or order Trichoptera, are a group of insects with aquatic larvae and terrestrial adults. There are approximately 14,500 described species, most of which can be divided into the suborders Integripalpia and Annulipalpia on the basis of the adult mouthparts. Integripalpian larvae construct a portable casing to protect themselves as they move around looking for food, while Annulipalpian larvae make themselves a fixed retreat in which they remain, waiting for food to come to them. The affinities of the small third suborder Spicipalpia are unclear, and molecular analysis suggests it may not be monophyletic. Also called sedge-flies or rail-flies, the adults are small moth-like insects with two pairs of hairy membranous wings. They are closely related to the Lepidoptera (moths and butterflies) which have scales on their wings; the two orders together form the superorder Amphiesmenoptera. The aquatic larvae are found in a wide variety of habitats such as streams, r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Limnephilidae
__NOTOC__ Limnephilidae is a family of caddisflies with about 100 genera. They belong to the main lineage of case-constructing caddisflies, the Integripalpia or tube-case caddisflies. The Limnephilidae is one of the most species-rich Trichoptera families of northern temperate regions, but only a few are known from tropical areas and the Southern Hemisphere. For this reason they are often known as northern caddisflies. Description and ecology The adults are usually brown in colour, often with narrow mottled or patterned forewings and much broader, transparent hindwings. The aquatic larvae construct portable cases from a wide variety of plant and mineral materials, sometimes even snail shells. Cases of young larvae often looking completely different from those of larger instars. Larvae tend to be eruciform (with a thickset head and thorax), rather slow-moving, and usually feed by browsing algae or scavenging animal remains. They pupate within the larval case, the pupa swimming to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
