Acrobeles complexus
Thorne, 1925
12. 11.
|
1.7
|
14.3
|
25.8
|
58.
|
90.
|
.4 mm
|
1.7
|
4.4
|
5.5
|
6.0
|
2.7
|
12. 11.
|
1.7
|
14.3
|
25.8
|
58.
|
90.
|
.4 mm
|
1.7
|
4.4
|
5.5
|
6.0
|
2.7
|
The heavy annules of the cuticle form crenate margins along the single
submerged wing. A cutinous band, indicated by a bright line, traverses
the ends of the annules along each side of the wing-area. The expanded
lip region bears three pairs of cephalic probolae that extend forward to
a point opposite the middle of the labial probolae. The cephalic
probolae are fringed with triangle, acute membranes. The labial probolae
are bifurcate half their length and the prongs end in short, blunt, terminal
branches. The prongs bear pointed triangular membranes. Heavy
cutinous points are present in the cephalic axils at the bases of the labial
probolae. When viewed laterally the amphids appear as transverse, flattened
oval markings but from a dorsal or ventral view they appear as sac-like
organs with long inner extensions which apparently end in glands lying
close to the esophagus caudad to the base of the pharynx. The three
posterior sets of pharyngeal plates are usually difficult to see although
the dorsal plate of the fourth set sometimes is developed distinctly.
The cardiac bulb is half the neck width. The renette pore lies almost
opposite the nerve-ring, the renette itself apparently being a small gland
located in front of the cardiac bulb. Lips of the vulva elevated
and symmetrical. Tail convex-conoid to the acute terminus.
The tail of the male is similar to that of the female and bears three
pair of pre-anal and two of post-anal sub-median papillae and two lateral
papillae, the cephalated spicula are strongly arcuate with slender, linear
accessory pieces half as long as themselves.
This is the most common Acrobeles found and is usually present in considerable
numbers in soil and decaying plant roots.
(Description- Thorne, 1925)