Sialis Latreille, 1802
(alderflies)

Subtaxon Example images Rank Featured
subtaxa		 No of
images		 No of
ID refs
Sialis lutaria
Common Alderfly
Male (Click to open)
 		Species 7 images
Sialis (unidentified)
Unidentified Alderflies
(Click to open)
 		Unidentified 4 images
Taxonomic hierarchy:
GenusSialis (alderflies)
FamilySIALIDAE (alder flies)
OrderMEGALOPTERA (alderflies)
Division Endopterygota (bees, beetles, flies, moths and other insects with wings developing internally)
InfraclassNeoptera (bees, beetles, flies, grasshoppers, moths and other advanced insects)
SubclassPTERYGOTA (bees, beetles, dragonflies, flies, grasshoppers, moths and other winged insects)
ClassINSECTA (true insects)
SubphylumHEXAPODA (insects and other 6-legged organisms)
PhylumARTHROPODA (arthropods)
SuperphylumECDYSOZOA (skin shedders)
CladeBilateria (bilaterally symmetrical animals)
SubkingdomEUMETAZOA (metazoans)
KingdomANIMALIA (animals)
DomainEukaryota (eukaryotes)
LifeBIOTA (living things)

Sialis (alderflies) may be included in identification literature listed under the following higher taxa:

NBNNBN (data.nbn.org.uk) has a distribution map for Sialis (alderflies)
BioInfoBioInfo (www.bioinfo.org.uk) has 0 host/parasite/foodplant and/or other relationships for Sialis (alderflies)

Microscopic examination of the external genitalia is needed to identify alderflies of both sexes.

Gentle dorso-ventral squeezing of the penultimate abdominal segments of fresh male specimens usually opens the genitalia.

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