Genus Aglenchus
Andrassy, 1954
(Andrassy, 1954) Meyl, 1961
Diagnosis of Geraert, 1991
Atylenchinae. Body 0.4-0.7mm long, straight to slightly curved. Cuticle
distinctly annulated, annuli usually 1.5 - 2um wide (extreme values:
1.3 - 2.4um). Lateral field with two ridges that are usually close
to each other giving three lateral lines; when the two ridges are slightly
separated four lines are visible, the two inner ones closer together. More
or less rounded amphidial apertures on head front (subfamily character),
with lateral offshoot in Aglenchus dakotensis male. Head
smooth. Stylet 9 - 13 um long, anterior conical part always slightly
smaller than posteior cylindrical part. Advulval papillae dorsosublateral,
anterior to vulva. Vulva sunken with smaller inner lips and usually with
large lateral flaps. Vagina obliquely forward, walls usually thickened;
no postvulval uterine sac. Spermatheca offset, oval to rounded, usually
with sperm. tail filiform. Males with adanal bursa, spicules slightly curved;
cloacal lips form an elongate tube (slightly offset in some A. agricola
males).
Biotic notes: Aglenchus agricola is cosmopolitan. Very common
and widespread in Europe, it feeds on grasses and clover (Bongers, 1988);
it is not only found in arable soil and meadows but in all kinds of noncultivated
soils, in mountain regions, and even in freshwater. A. muktii is
known from India and USA (California), A. mardanensis from Pakistan,
and A. dakotensis from USA (North Dakota). It could be that these
species are more widespread but because of their overall resemblance with
the type species have been considered as A. agricola.
Species found:
at:
Species
list from Ebsary, 1991
