Dreyfusia prelli Grosmann, 1935

on Picea, primaire generation

gall

gall resembles the one of D. nordmannianae of D. merkeri, differential characters not clear.

primary host plants

Pinaceae, (narrowly?) monophagous

Picea orientalis.


on Abies, secondary generation

Dreyfusia prelli: aphids and eggs on Abies alba

Abies alba (uit Binazzi & Covassi, 1991a): aphids and eggs

gall

swelling and stunting of the branches by aphis damage; here also the differences with nordmannianae and merkeri are unclear.

secondary host plants

Pinaceae, monophagous

Abies alba, cephalonica, nordmanniana.

synonyms

Adelges prelli.

references

Binazzi & Covassi (1991a), Blackman & Eastop (2014), Buhr (1964a, 1965a), Hellrigl (2004a), Roskam (2009a), Wojciechowski, Depa, HalgoŇ° ao (2016a).

mod 13.ix.2019