Diatoms of North AmericaDiatoms of North America
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Compare Amphora pediculus

(Kütz.) Grunow in Schmidt 1875

Compare

Amphora pediculus should be compared with A. indistincta and A. inariensis. Amphora indistincta is similar in size, but differs by the presence of a dorsal ridge and with each stria composed of a single areola. Amphora inariensis has a silicious flap extending from the dorsal marginal ridge and dorsal areolae with expanded ends. Amphora inariensis, however, has not been verified in North America.

Amphora copulata is larger in size, has a curved raphe and 'closed' dorsal fascia as compared to A. pediculus.

LM scalebar = 10 µm
Amphora pediculus LM8 Amphora pediculus LM4 Amphora pediculus LM1 Amphora pediculus LM7 Amphora pediculus LM2 Amphora pediculus LM5
Length Range
6-16 µm
Width Range
2.5-4 µm
Striae in 10 µm
18-24

Amphora copulata

(Kütz.) Schoeman and R.E.M.Archibald 1986

Amphora copulata LM6 Amphora copulata LM4 Amphora copulata LM7 Amphora copulata LM5 Amphora copulata LM1 Amphora copulata LM3 Amphora copulata LM2
Length Range
12-62 µm
Width Range
4-10 µm
Striae in 10 µm
14-17

Amphora minutissima

W.Sm. 1953

Amphora minutissima LM1 Amphora minutissima LM3 Amphora minutissima LM5 Amphora minutissima LM2 Amphora minutissima LM4
Length Range
13-20 µm
Width Range
3.5-5 µm
Striae in 10 µm
17-18

Also compare to

Amphora inariensis

Krammer

Amphora indistincta

Levkov