Abstract
Sununary Helerodera arenana Cooper, 1955 is redescribed from marram grass (Ammophila arenana) from Gibraltar Point, Eastern England. The same species was also found on marram grass from seven other dune sites in Britain. H. arenana belongs to the H. avenae group of Helerodera species, the cyst cone is bifenestrate with prominent bullae but no underbridge. H. arenana differs from H. avenae in having a shoner vulval slit, longer second stage juveniles and larger females; in juveniles and males of H. arenana the stylet basal knobs are indented more anteriorly.
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Claims 6
Claim · model-written summary
The cyst cone of Heterodera arenaria is bifenestrate with prominent bullae but no underbridge.
Verbatim
e0“H. arenana belongs to the H. avenae group of Helerodera species, the cyst cone is bifenestrate with prominent bullae but no underbridge”
e1“Helerodera arenana Cooper, 1955 is redescribed from marram grass (Ammophila arenana) from Gibraltar Point, Eastern England”
Claim · model-written summary
Heterodera arenaria has a shorter vulval slit than H. avenae.
Verbatim
e1“Helerodera arenana Cooper, 1955 is redescribed from marram grass (Ammophila arenana) from Gibraltar Point, Eastern England”
e3“H. arenana differs from H. avenae in having a shoner vulval slit, longer second stage juveniles and larger females”
Claim · model-written summary
Heterodera arenaria has longer second stage juveniles than H. avenae.
Verbatim
e1“Helerodera arenana Cooper, 1955 is redescribed from marram grass (Ammophila arenana) from Gibraltar Point, Eastern England”
e3“H. arenana differs from H. avenae in having a shoner vulval slit, longer second stage juveniles and larger females”
Claim · model-written summary
Heterodera arenaria has larger females than H. avenae.
Verbatim
e1“Helerodera arenana Cooper, 1955 is redescribed from marram grass (Ammophila arenana) from Gibraltar Point, Eastern England”
e3“H. arenana differs from H. avenae in having a shoner vulval slit, longer second stage juveniles and larger females”
Claim · model-written summary
In juveniles and males of Heterodera arenaria the stylet basal knobs are indented more anteriorly.
Verbatim
e1“Helerodera arenana Cooper, 1955 is redescribed from marram grass (Ammophila arenana) from Gibraltar Point, Eastern England”
e4“in juveniles and males of H. arenana the stylet basal knobs are indented more anteriorly”
Claim · model-written summary
Heterodera arenaria was found on marram grass from seven other dune sites in Britain.
Verbatim
e2“The same species was also found on marram grass from seven other dune sites in Britain”