53
a. Foot with 2 sections. Most species littoral,
only one planktonic species. Size < 320 µm.
In littoral among macrophytes. Very common.
- Paoay Lake, La Mesa Dam, Naujan, Lake Mainit,
Lake Lanao, Calamba River, IRRI
rice field,
Pasig River (rare).
Euchlanis
dilatata, (EHRENBERG, 1832)
[1941, 1978a,b,
1986, 1999, 2009]
53
b. In pelagic (limnetic) zone, with relatively shorter
toes and higher dorsal plate.
- Laguna de Bay (form lucksiana, HAUER, 1931, planktonic),
Euchlanis dilatata. var. lucksiana
[1941]
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c. Similar to E. dilatata, but with high crested
dorsal lorica plate and lateral extensions or
"wings". Ventral planar. Dorsal anteroposterior
keel prominent. Toes strong, pointed.
Body oval shaped. The 'V' shaped notch at
the posterior end of the dorsal plate is
characteristic. Size 175-210 µm. Littoral.
- Calamba River.
Euchlanis
incisa, CARLIN, 1939
(syn. Euchlanis
triquetra)
[1999]
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d. Foot with 3 jointed segments.
Strictly litoral.(Dipleuchlanis)..............................54
DIPLEUCHLANIS,
de Beauchamp, 1910
Foot with 3 jointed
segments. Strictly litoral.
54.
a. Dorsal plate
concave and smaller than ventral.
Lateral edges of the two plates nearly parallel.
Toes very long an slender (Mamaril 1978a).
A strictly littoral genus similar to Euchlanis.
- Calamba River, Laguna Lake, IRRI Rice field.
Dipleuchlani