Meloidogyne hapla Chitwood, 1949

northern root-knot nematode

on all sorts of plants, mainly herbaceous dicotyledons

Meloidogyne cf hapla: root galls on Papaver rhoeas

Papaver rhoeas, Belgium, prov. Namur, Couvin, Aublain © Sébastien Carbonnelle: identification tentative!

gall

Attached at the roots are fusiform bodies of 1-6 x 0.5-5 mm. Embedded in the tissue are the strongly enlarged, more or less globular female eel worms.

host plants

broadly polyphagous

Achillea millefolium; Allium ascalonicum, cepa; Ammi visnaga; Antennaria dioica; Antirrhinum majus; Artemisia maritima; Atriplex hortensis; Begonia; Bellis; Berberis aquifolium, sargentiana; Beta vulgaris; Bidens tripartitus; Bosea amherstiana; Brassica napus, oleracea; Carum carvi; Chelidonium majus; Chelone glabra; Chenopodium album; Cichorium endivia, intybus; Clematis viticella; Consolida ajacis; Coriandrum sativum; Cota tinctoria; Cucumis melo, sativus; Cyanus segetum; Dahlia pinnata; Daucus carota; Dianthus barbatus, caryophyllus; Digitalis lanata, purpurea; Dipsacus fullonum; Dysphania ambrosioides; Erodium cicutarium; Eruca vesicaria; Erysimum cheiranthoides; Euphorbia helioscopia; Fallopia convolvulus; Forsythia x intermedia; Fragaria; Galeopsis tetrahit; Galinsoga parviflora; Geranium pyrenaicum; Gladiolus; Glycine max; Gnaphalium uliginosum; Hemerocallis fulva; Hepatica nobilis; Hordeum vulgare; Hylotelephium telephium; Hyoscyamus niger; Impatiens; Kickxia spuria; Lactuca sativa; Lamium amplexicaule, purpureum; Lapsana communis; Lathyrus odoratus; Ligustrum vulgare; Linum usitatissimum; Lipandra polysperma; Lobelia erinus; Lomelosia caucasica; Lonicera x purpusii; Lotus; Lupinus luteus; Lycopersicon esculentum; Lycopsis arvensis; Lysimachia nummularia; Matricaria chamomilla; Medicago sativa; Mentha arvensis; Myosotis micrantha; Noccaea brachypetala; Ornithopus sativus; Oxalis stricta; Paeonia; Papaver argemone, rhoeas; Persicaria maculosa; Phacelia; Phaseolus vulgaris; Phlox; Picris hieracioides; Pimpinella anisum; Pisum sativum; Plantago lanceolata, major, media; Polygonum aviculare; Portulaca oleracea; Primula obconica; Pulicaria dysenterica; Pulsatilla vulgaris; Raphanus raphanistrum, sativus; Rhodiola rosea; Ribes rubrum; Rosa; Rudbeckia laciniata; Rumex acetosella, crispus; Salpiglossis; Salvia; Scopolia carniolica; Scorzonera hispanica; Secale cereale; Sedum acre; Silene atropurpurea, coelirosa, gallica, vulgaris; Sinapis alba, arvensis; Solanum tuberosum; Spergula arvensis; Spinacia oleracea; Stachys arvensis; Stellaria media; Succisa pratensis; Tagetes patula, tenuifolia; Taraxacum officinale; Tragopogon porrifolius; Trifolium hybridum; Trigonella; Tripleurospermum inodorum; Valeriana Valeriana excelsa subsp. sambucifolia, officinalis; Valerianella locusta; Verbena officinalis; Veronica hederifolia; Vicia; Vinca; Viola; Vitis vinifera; Xanthium; Zinnia elegans.

Despite this extreme polyphagy (almost) not on grasses.

references

Bongers (1988a), Buhr (1964a, 1965a), Coulianos & Holmåsen (1991a), Dauphin & Aniotsbehere (1997a), Grosscurt (2017a), Ortuño & Oros (2002a), Redfern & Shirley (2011a), Roskam (2009a, 2019a), Tomasi (2014a).