Back to 54 a. - Back to content

MYTILINIDA, HARRING, 1913 (family)  

MYTILINA, BORY ST. VINCENT 1826.

(syn. Diplacidium, Diplax, Salpina)

Strongly loricate. Two dorsal ridges with a
furrow between. Almost always with variable
anterior and posterior spines. Toes two,
longer than foot. Found among plants,
littoral and benthic, only as guests
in the plankton (tychoplanktonic): Pasig River.
    [2009]

55 a. Lorica transparent with three keels on the back.
Frontal edge smooth and curved. Toes thin and
straight ending in an acute point. (Littoral)
- Laguna de Bay, IRRI, Consolacion (Cebu)
   Mytilina bisulcata              
          [1978a+b, 1986]

55 b. Lorica heavily stippled in anterior region.
With small spines. Posterior ventral spines
longer than the posterior dorsal spine.
Two toes, well developed with acute points.
Size 170-225 µm. A fairly variable species.
(Littoral)
- Paoay Lake, Bustos Dam, Lake Lanao,
  Calamba River
   Mytilina ventralis, EHRENBERG, 1832
          [1986, 1999]

TRICHOTRIIDAE, HARRING, 1913 (family)

 

TRICHOTRIA, (BORY ST. VINCENT 1827)

56 a. Lorica vase-shaped, longer than broad.
Trunk, head and foot clearly defined.
Sturdy lorica facetted and pustulate,
with ridges and spines. Foot with 3 segments,
first with two dorsal triangular spines.
Two slender toes about as long as foot.
Eye single. Littoral, rarely or never
in plankton
- Laguna Lake.
   Trichotria tetractis (EHRENBERG, 1830)
          [1978a+b, 1999]

To 57 a.