Table 4.

Comparison of main characteristics in four Leptopharynx costatus populations. Those features marked with a dot define distinct morphs of L. costatus.

Characteristics	L. costatus costatus (Germany)	L. costatus costatus (Mexico)	L. costatus costatus (Austrian Alps)	L. costatus costatus (Brazil)	L. costatus gonohymen (Florida)
• Small morph with narrow oral basket	Present	Present	Present	Present	Present
• Large morph with wide oral basket	Presenta	Present	Absent	Not observed	Absent
Large morph with narrow oral basket	Absent	Absent	Does not apply	Not observed	Present
Adoral membranelle 1 in small morph with narrow oral basket	Absent	Absent	Absent	Absent	Absent
• Adoral membranelle 1 in large morph with wide oral basket	Present	Absent	Does not apply	Does not apply	Does not apply
Adoral membranelle 1 in large morph with narrow oral basket	Does not apply	Does not apply	Absent	Does not apply	Absent
Adoral membranelle 1 in dividers	Present	Present	Present	Not observed	Present
• Orientation of membranelles 2 and 3	Flat	Flat	Flat	Flat	Right-angled
Average total number of basal bodies in small morph	185b	185b	187 c	186	162
Average total number of basal bodies in large morph	265b	248b	Does not apply	Does not apply	256

^aSee Figs 33, 34.

^bFrom Table 3 in Omar and Foissner (2011).

^cSmall and large specimens together. When they are separated, 155 and 202 basal bodies are obtained, respectively.