Tryblionella hungarica has a ratio of nearly 2:1 of fibulae to striae (T. apiculata has a 1:1 ratio) and the central constriction is less apparent.

LM scalebar = 10 µm
Length Range
32-47 µm
Width Range
5-7 µm
Striae in 10 µm
15-18
Tryblionella apiculata LM4
Tryblionella apiculata LM3
Tryblionella apiculata LM2
Tryblionella apiculata LM1
Tryblionella apiculata LM5
Tryblionella apiculata LM4 Tryblionella apiculata LM3 Tryblionella apiculata LM2 Tryblionella apiculata LM1 Tryblionella apiculata LM5

Tryblionella hungarica

(Grunow) Freng. 1942

Length Range
35-100 µm
Width Range
5-9 µm
Striae in 10 µm
16-19
Tryblionella hungarica LM1 Tryblionella hungarica LM5 Tryblionella hungarica LM3 Tryblionella hungarica LM2 Tryblionella hungarica LM4 Tryblionella hungarica LM2 Tryblionella hungarica LM1