sea aster

synonym: Aster tripolium

organ parasitic mode stage note taxonomic group parasite
stem borer Agromyzidae Melanagromyza tripolii
fruit vagrant Coleophoridae Coleophora halophilella
fruit vagrant rarely Coleophoridae Coleophora virgaureae
fruit vagrant Coleophoridae Coleophora asteris
flower borer Tephritidae Ensina sonchi
flower borer Tephritidae Trupanea stellata
flower gall Tephritidae Campiglossa plantaginis
leaf miner Agromyzidae Calycomyza humeralis
leaf miner doubtful Agromyzidae Phytomyza erigerophila
leaf miner Bucculatricidae Bucculatrix maritima
leaf pustule aecia Pucciniales Puccinia extensicola
stem gall Tortricidae Eucosma aspidiscana
root vagrant summer generation Aphididae Pemphigus trehernei
leaf vagrant summer generation Aphididae Brachycaudus helichrysi
systemic vagrant summer generation Aphididae Aphis triglochinis
systemic vagrant Aphididae Aphis tripolii
stem vagrant Aphididae Macrosiphoniella asteris

Organ

the part of the plant that most conspicuously is hit by the parasite

all buds: both flower buds and leaf buds
flower: also inflorescence
leaf: also needle, phyllodium, petiole
leaf bud: also unfolding young leaf
fruit: also seed
root: also root stock, runners
root collar: also the lowest part of the stem
stem: also culm, the lower part of the peduncle, in grasses also leaf sheath
systemic: the entire above-ground plant.

PARASITIC MODE

borer: larva living internally, almost no outwards signs
down: 0.5-2 mm high fungal down
film: very thin cover of fungal tussue
gall: swelling and/or malformation
grazer: feeding at the outside of the plant
leaf spot discoloured, often ± necrotic, generally not galled, sign of a fungus infection
miner-borer: larve initially makes a mine, lives as a borer later
pustule: plug of fungal tissue, generally brown-black and < 2 mm
stripe: longitudinal line of fungal tissue in a grass leaf
vagrant: (aphids, mites) living freely on the plant, at higher densitiy causing malformations.

IMPORTANT

The host plant spectre of a parasite is rarely known exhaustively; this applies in particular at the species level. It is advisable therefore to check at least also the list of all parasites of this genus.

 

mod 16.iii.2018