TABLE 7. Measurements [in µm] of selected morphological structures of sexually immature life stages of Echiniscus lapponicus mounted in Hoyer’s medium. Abbreviations: sp —the proportion between the length of a given structure and the length of the scapular plate.
| CHARACTER |
Juvenile 1 |
Juvenile 2 |
Larva |
|
µm |
sp |
µm |
sp |
µm |
sp |
| Body length |
157 |
485 |
136 |
466 |
121 |
535 |
| Scapular plate length |
32.4 |
– |
29.2 |
– |
22.6 |
– |
| Head appendage lengths |
| Cirrus internus |
7.4 |
22.8 |
|
|
6.0 |
26.5 |
| Cephalic papilla |
5.5 |
17.0 |
4.6 |
15.8 |
4.3 |
19.0 |
| Cirrus externus |
11.2 |
34.6 |
10.2 |
34.9 |
10.0 |
44.2 |
| Clava |
5.0 |
15.4 |
4.3 |
14.7 |
3.6 |
15.9 |
| Cirrus A |
37.9 |
117.0 |
32.5 |
111.3 |
21.7 |
96.0 |
| Cirrus A /Body length ratio |
24% |
– |
24% |
– |
18% |
– |
| Body appendage lengths |
| Cirrus B |
23.0 |
71.0 |
? |
? |
lacking |
| Cirrus C |
28.0 |
86.4 |
21.0 |
71.9 |
lacking |
| Cirrus Ccd |
16.0 |
49.4 |
? |
? |
9.0 |
39.8 |
| Cirrus Cd |
23.0 |
71.0 |
19.0 |
65.1 |
10.0 |
44.2 |
| Cirrus D |
25.0 |
77.2 |
19.0 |
65.1 |
lacking |
| Cirrus Dcd |
19.0 |
58.6 |
14.0 |
47.9 |
lacking |
| Spine Dd |
4.0 |
12.3 |
4.0 |
13.7 |
1.0 |
4.4 |
| Cirrus E |
30.0 |
92.6 |
25.0 |
85.6 |
14.0 |
61.9 |
| Spine on leg I length |
2.0 |
6.2 |
1.8 |
6.2 |
1.9 |
8.4 |
| Papilla on leg IV length |
2.8 |
8.6 |
2.9 |
9.9 |
2.8 |
12.4 |
| Number of teeth on the collar |
5.0 |
– |
6.0 |
– |
5.0 |
– |
| Claw I heights |
| Branch |
9.1 |
28.1 |
8.1 |
27.7 |
6.9 |
30.5 |
| Spur |
2.0 |
6.2 |
1.7 |
5.8 |
1.9 |
8.4 |
| Spur/branch height ratio |
22% |
– |
21% |
– |
28% |
– |
| Claw II heights |
| Branch |
8.6 |
26.5 |
7.6 |
26.0 |
6.5 |
28.8 |
| Spur |
2.2 |
6.8 |
1.7 |
5.8 |
1.9 |
8.4 |
| Spur/branch height ratio |
26% |
– |
22% |
– |
29% |
– |
| Claw III heights |
| Branch |
9.1 |
28.1 |
7.4 |
25.3 |
6.4 |
28.3 |
| Spur |
2.2 |
6.8 |
? |
? |
1.6 |
7.1 |
| Spur/branch height ratio |
24% |
– |
? |
– |
25% |
– |
| Claw IV heights |
| Branch |
10.7 |
33.0 |
8.3 |
28.4 |
7.5 |
33.2 |
| Spur Spur/branch height ratio |
?? |
? – |
2.1 25% |
7.2 – |
?? |
? – |