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Topic: Alderflies

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	Megaloptera - dobsonflies, alderflies
		Alderflies and dobsonflies can be distinguished from lacewings by the absence of terminal branching wing veins and from the later as stoneflies possess abdominal
		Female alderflies and dobsonflies may lay up to 3000 eggs on rocks or debris close to the stream but not in the water.
		Alderflies and dobsonflies are not strong fliers and are therefore found close by freshwater streams due to their aquatic
	www.ento.csiro.au /education/insects/megaloptera.html (337 words)

	Discover Life - Insecta: Megaloptera - Dobsonflies, Alderflies, Snakeflies, Fishflies
		Alderflies and dobsonflies have well developed mandibles, but do not feed in the adult stage.
		All stages in snakeflies are terrestrial, but alderflies and dobsonflies have aquatic, gilled larvae.
		Alderflies and dobsonflies have larvae that are very intolerant of pollution and their presence in a stream is therefore a good indicator of its health.
	www.discoverlife.org /mp/20o?search=Megaloptera&guide=Insect_orders (353 words)

	Alderfly (Site not responding. Last check: )
		Alderflies (family Sialidae) are cousins to Dobsonflies, with whom they form a small INSECT order called Megaloptera.
		Adults have two pairs of strongly veined, membranous wings that fold over their bodies like a kind of roof when they are rest.
		Alderflies may be flish or greyish in colour, sometimes with white spots.
	thecanadianencyclopedia.com /PrinterFriendly.cfm?Params=J1ARTJ0000129 (199 words)

	Bright Minds: The Challenge (Site not responding. Last check: )
		Alderflies and dobsonflies have well developed mandibles, but do not feed in the adult stage.
		All stages in snakeflies are terrestrial, but alderflies and dobsonflies have aquatic, gilled larvae called nymphs that prefer freshwater streams with clear, running water.
		Alderflies and dobsonflies have larvae that are very intolerant of pollution and their presence in a stream is therefore a good indicator of its health.
	www.brightminds.uq.edu.au /thechallenge/whatami/HTML/Megaloptera.html (259 words)

	EPA - Benthic Macroinvertebrates - Alderflies
		Food: larvae are aggressive predators, feeding on other adult aquatic macroinvertebrates; as secondary consumers, they are eaten by other larger predators.
		Indicator Role: Alderflies are generally intolerant of pollution.
		Alderfly from Westbrook Elementary School, Maryland, Macroinvertebrate Menu
	www.epa.gov /bioindicators/html/alderflies.html (134 words)

	Discover Life - Insecta: Megaloptera - Dobsonflies, Alderflies, Snakeflies, Fishflies (Site not responding. Last check: )
		Alderflies and dobsonflies have well developed mandibles, but do not feed in the adult stage.
		All stages in snakeflies are terrestrial, but alderflies and dobsonflies have aquatic, gilled larvae.
		Alderflies and dobsonflies have larvae that are very intolerant of pollution and their presence in a stream is therefore a good indicator of its health.
	pick4.pick.uga.edu /mp/20q?search=Megaloptera&guide=Insecta (341 words)

	MEGALOPTERA
		Alderflies are placed in the Family Sialidae, while the dobsonflies and fishflies both belong the Family Corydalidae.
		In the larval stage, alderflies differ from dobsonflies and fishflies chiefly in having a single terminal filament and seven pairs of lateral filaments on the abdomen, instead of a pair of hooked anal proleg and eight pairs of lateral abdominal filaments.
		Alderfly adults, with few exceptions, are fairly large, fl, broad insects, rather sluggish in their movements.
	www-personal.umich.edu /~mjwiley/www516/doc_leonard_mega-neur.htm (1778 words)

	Gordon's Neuroptera Page
		Alderfly females lay between 200-500 eggs but as several females may lay on the same leaf you can often find thousands of eggs together.
		The larvae are actively predatory and feed by sucking up the body fluids of their prey through a hollow tube formed by a groove on the inside of their mandibles and their maxillae.
		Alderflies occur all over the world but Dobsonflies are restricted to North America and Asia.
	www.earthlife.net /insects/neurop.html (1422 words)

	westfly--Alderflies
		Alderfly larvae live in the shallow, debris-strewn margins of lakes.
		Once they're on the water their fate is sealed: being even less unsinkable then the Titanic, they slowly submerge until they either drown or are eaten by a trout.
		An alderfly imitation can be useful in areas where the insects are found.
	www.westfly.com /ento/others/alderflies.htm (133 words)

	New Page 1 (Site not responding. Last check: )
		Adult alderflies are only active for a few days, and are themselves not a significant part of the ecosystem, although predators such as dragonflies and damselflies that live near aquatic habitats occasionally eat them.
		Alderfly larvae can be found on the bottom of clear, cool slow-flowing freshwater streams.
		Alderfly larvae are active predators of other water bugs and have strong jaws (mandibles), which they use to grasp their prey.
	pilgrims.net /plymouth/schools/Science/fieldguides/bayou/williek04/thealderflies.htm (112 words)

	Visual Stream Invertebrate Guide
		Fishflies and Alderflies (order Megaloptera): Three pairs of legs (6 total); filaments along the body starting just below the legs; variable tails at the end of the abdomen.
		Alderflies (family Sialidae) have a long tapered tail; dobsonflies “also called hellgrammites” and fishflies have hooked-tails (family Corydalidae).
		The hellgrammites has gill-tufts under each of their filaments, fishflies and alderflies do not.
	www.rappflow.org /guide.html (1007 words)

	Printable Life History
		Ecological Role: Adult alderflies are only active for a few days, and are themselves not a significant part of the ecosystem, although predators such as dragonflies and damselflies that live near aquatic habitats occasionally eat them.
		The disappearance of wetlands and the pollution of rivers and streams are a potential threat to this and all aquatic organisms.
		Because of their sensitivity to pollution, alderflies are biological indicators of stream health.
	www.kentuckyawake.org /plantswildlife/helperFiles/print.cfm?Exclude=0&ID=184 (227 words)

	[No title]
		Adults of Corydalidae are particularly noteworthy for their frequently large size, and, in many species of the genera Corydalus and Acanthacorydalis, for the extremely elongated mandibles of adult males.
		Occurrence of alderfly larvae (Megaloptera) in a West Virginia population of the purple pitcher plant, Sarracenia purpurea L. (Sarraceniaceae).
		Typically, alderfly larvae are associated with lentic habitats (sediments of lakes and depositional zones of streams), while corydalid larvae (hellgrammites) mostly occur in lotic environments (riffles and other erosional zones, from small mountain streams to large rivers).
	ag.arizona.edu /tree/eukaryotes/animals/arthropoda/hexapoda/megaloptera/Megaloptera.nex (2188 words)

	Insect Order Diptera - True Flies - Cirrus Digital Imaging
		The common housefly is a true fly and is one of the most widely distributed animals.
		The presence of a single pair of wings distinguishes true flies from other insects with "fly" in their name, such as mayflies, dragonflies, damselflies, stoneflies, whitefly, fireflies, alderflies, dobsonflies, snakeflies, sawflies, caddisflies, butterflies or scorpionflies.
		Some true flies have become secondarily wingless, especially in the superfamily Hippoboscoidea, or among those that are inquilines in social insect colonies.
	www.cirrusimage.com /flies.htm (810 words)

	El Enigma de las Alderflies
		Las alderflies casi en su totalidad requieren de un año para completar su ciclo, en el cual pasan un promedio de 5 a 10 días como huevo, luego en estado larval se pasan los siguientes 8 ó 10 meses, llegando a su estado de pupa durante una semana aproximadamente.
		Los peces notan esta actividad y están absolutamente atentos a cualquier desdichada o distraída alderfly que se atreva a posarse o caer cerca de la superficie del agua.
		En resumen, existen las alderflies en estas tierras.
	www.riosysenderos.com /baul/alderflies.htm (1390 words)

	Fishflies, Dobsonflies, and Alderflies (order Megaloptera) (Site not responding. Last check: )
		Fishflies, Dobsonflies, and Alderflies (order Megaloptera) are perhaps the most ferocious of the aquatic insects.
		Fishflies and Dobsonflies belong to the family Corydalidae and the Alderflies belong to the family Sialidae.
		Alderflies are also very similar to Dobsonflies and Fishflies but where the Dobsonflies and Fishflies have two terminal claws, Alderflies have a single terminal filament without claws and they are much smaller.
	www.montgomerycountymd.gov /deptmpl.asp?url=/content/dep/csps/watersheds/biomon/bugs/megaloptera.asp (165 words)

	Insect ABCs
		They can be idenified by their blunt heads with no tong-like mandables and an antenna half the length of it's body.
		Alderflies mate among the plants near ponds or streams.
		After the larvae have filled themselves, they form a silk coccoon on the water line and remain in the cocoon as a pupa until they emerge as adult alderflies.
	www.cornellcollege.edu /biology/insects2003/erinmorgan/a.htm (135 words)

	Alderflies and Dobsonflies (Order Megaloptera)
		Lacewings can be separated from alderflies and dobsonflies by their forked veins along the margin of their wings.
		Stoneflies can be distinguished from alderflies or dobsonflies by cerci extending from their abdomen.
		Many stoneflies wrap their wings around their body at rest and hold their legs (which are bent at the 'elbows') out from their body.
	www.bugwise.net.au /guide/alderflies.htm (152 words)

	Neuroptera
		The name Neuroptera is derived from the Greek word "neuron" meaning sinew and "ptera" meaning wings.
		The order Neuroptera includes the lacewings and antlions (suborder Planipennia), dobsonflies and alderflies (suborder Megaloptera) and snakeflies (suborder Raphidoidea).
		Sialidae (Alderflies) -- adults are smaller than dobsonflies
	www.cals.ncsu.edu /course/ent425/compendium/neurop~1.html (778 words)

	[No title] (Site not responding. Last check: )
		Alderflies have no gill tufts and a smooth underside.
		Alderflies have one branched tail filament extending straight back.
		The alderfly has three pairs of segmented legs attached to the middle section of its body.
	www.mcps.k12.md.us /schools/westbrookes/macro/alderf.html (177 words)

	Neuroptera (including Megaloptera)
		Spongillaflies, alderflies, dobsonflies, and fishflies have aquatic larvae, snakeflies, lacewings, antlions and owlflies have terrestrial larvae.
		Whiting, M.F. Cladistic analysis of the alderflies of America north of Mexico (Megaloptera, Sialidae).
		Megaloptera- larvae with normal mandibulate mouthparts, digestive tract complete, adults with hind wings with an enlarged anal area, which is folded fanwise.
	www.esg.montana.edu /aim/neurop/neurop.html (593 words)

	AllRefer.com - dobsonfly (Zoology: Invertebrates) - Encyclopedia
		The large aquatic larvae, called hellgrammites and much used by fishermen as bait, feed on aquatic insects for three years and then emerge to pupate on land.
		The closely related alderflies differ from the dobsonflies in their smaller size and diurnal habits.
		Dobsonflies are classified in the phylum Arthropoda, class Insecta, order Neuroptera, family Corydalidae.
	reference.allrefer.com /encyclopedia/D/dobsonfl.html (211 words)

	Neuroptera (Site not responding. Last check: )
		The wings of the adult neuropteran are distinguishable from the wings of the other orders because front and rear wings are similar in size and the netlike composition of veins characterizes the two pairs of wings.
		The young of this order are entirely unlike the adults and are grublike, often with massive, menacing jaws.
		For dobsonflies and alderflies, sweep and beat vegetation near streams, lakes, or ponds.
	www.inhs.uiuc.edu /cwe/wwwtest/collect/HTML/neuroptera.html (135 words)

	Benthic Macroinvertebrate Page (Site not responding. Last check: )
		Megalopteran larvae are predacious and exhibit strong mandibles which can inflict a painful bite (when handling these larvae be sure to hold them directly behind the head in order to prevent being pinched).
		Dobsonflies and Fishflies (both Family Corydalidae) and Alderflies (Family Sialidae) are all grossly similar in morphology, but can be distinguished based on a few characteristics.
		The abdomen of both dobsonflies and fishflies terminates in a pair of anal prolegs, each with two hooks, while the abdomen of alderflies terminates in a single median filament without hooks.
	kywater.org /ww/bugs/megaloptera.htm (149 words)

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