Cupressatia siskiyou (Felt, 1917)

on Chamaecyparis

Cupressatia siskiyou: gall in Chamaecyparis spec. cone

Chamaecyparis spec., Belgium, prov. Antwerp, Mol © Carina Van Steenwinkel

Cupressatia siskiyou: gall in Chamaecyparis spec. cone

the larva forms itself a cavity in the developing seed

Cupressatia siskiyou: gall in Chamaecyparis spec. cone

several larvae in a cone

Cupressatia siskiyou: cocoon in gall

Chamaecyparis lawsoniana, Denmark © Simon Haarder: cocoon in opened, galled cone

Cupressatia siskiyou: larva and disfigured seed

larva and disfigured seed

Cupressatia siskiyou: spatula

spatula

gall

The cones are somewhat malformed and discoloured. The seeds are distorted, because a cavity has been formed in which a larva lies. The young larva is pale yellow, later it turns orange. The larva hibernates in a coccon in the gall, and pupates there in spring.

hostplants

Cupressaceae, monophagous

Chamaecyparis lawsoniana.

synonyms

Jaapiella, Janetiella, siskiyou; Craneiobia lawsonianae de Meijere, 1935.

notes

Like its hostplant originally a North American species. The first European records were in the Netherlands in 1931 (de Meijere, 1935a).

references

Barnes (1951a), Dauphin & Aniotsbehere (1997a), Gagné (2010a, 2013a), Gagné & Jaschhof (2014a), Haarder, Bruun, Harris & Skuhravá (2016a), Harris (2004a), de Meijere (1935a), Redfern & Shirley (2011a), Roskam (2009a), Roskam & Carbonnelle (2015a), Skuhravá & Skuhravý (2009b), Skuhravá, Skuhravý, Dauphin & Coutin (2005a), Skuhravá, Skuhravý & Jørgensen (2006a), Skuhravá, Skuhravý & Meyer (2014a), Skuhravá, Skuhravý, Skrzypczyńska & Szadziewski (2008a).

23/05/2017

mod 12.xi.2017