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- ›Horntails
- ›Siricinae

Sirex
Sirex is a genus of sawfly in the family Siricidae, the horntails or wood wasps. Their bodies are black with a dark blue or green metallic reflection with some species having reddish-brown portions.
They inject eggs with fungal endosymbionts into wood. The larvae of Sirex are unable to digest the wood on their own and rely on the fungus for nutrition, either eating the fungus or wood partially digested by the fungus. Female Sirex have a mycangium which is used to carry arthrospores of the fungus.
23 branches of this genus, most-observed first

Steely-blue Woodwasp
speciesSirex juvencus

European Woodwasp
speciesSirex noctilio

Areolate Woodwasp
speciesSirex areolatus

Sirex varipes
speciesSirex varipes

Sirex longicauda
speciesSirex longicauda

Sirex californicus
speciesSirex californicus

Sirex behrensii
speciesSirex behrensii

Sirex nigricornis
speciesSirex nigricornis

Sirex abietinus
speciesSirex abietinus

Sirex nitidus
speciesSirex nitidus

Blue Horntail
speciesSirex cyaneus

Grim Woodwasp
speciesSirex torvus

Sirex nitobei
speciesSirex nitobei

Sirex obesus
speciesSirex obesus

Sirex ermak
speciesSirex ermak

Sirex mexicanus
speciesSirex mexicanus

Sirex imperialis
speciesSirex imperialis

Sirex hispaniola
speciesSirex hispaniola

Sirex carinthiacus
speciesSirex carinthiacus
Sirex piceus
speciesSirex piceus
Sirex sinicus
speciesSirex sinicus
Sirex tianshanicus
speciesSirex tianshanicus
Sirex atricornis
speciesSirex atricornis
Where it lives
Recorded sightings
—
geo-referenced records in GBIF, from museums, herbaria and field observers.
Drag the globe to turn it. Dots are where records exist, not a range map; darker means more records.
In the stacks
Searching the stacks…
Every page naming Sirex in the Biodiversity Heritage Library →
This page is assembled live from iNaturalist, GBIF, Wikipedia, the Source Library and the Internet Archive. It is not yet part of the hand-edited codex. iNaturalist taxon 202630.