Checklist for Subclass Pterygota Lang, 1888 (Winged insects) and region Ritter (O´Brien County, Iowa, USA)
List of families for Ritter (O´Brien County) 2 Families width 4 Species
Genera for Ritter (O´Brien County) 3 Genera with 4 Species
Species list for Ritter (O´Brien County) 4 Species
Subnodes of Pterygota with occurrences in Ritter (O´Brien County)
Links, sources and further information Pterygota at itis.gov Pterygota at marinespecies.org
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