Checklist for Tribe Willowsiini Yoshii & Yayuk, 1989 and region Pennsylvania (USA)
Class | Entognatha Stummer-Traunfels, 1891 Entognathids | 17 44 60 | Families Genera Species | Taxom | Subclass | Ellipura Börner, 1910
| 16 43 59 | Families Genera Species | Taxom | Order | Collembola Lubbock, 1870 Collembolans, Snow flies, Springtail, Springtails | 16 43 59 | Families Genera Species | Taxom | Suborder | Entomobryomorpha Börner, 1913 Elongate-bodied Springtails | 4 18 32 | Families Genera Species | Taxom | Superfamily | Entomobryoidea Womersley, 1934
| 2 9 21 | Families Genera Species | Taxom | | Family | Entomobryidae Schäffer, 1896 Damp grain springtails, Entomobryid Springtails | 8 20 | Genera Species | Taxom | | Subfamily | Lepidocyrtinae Wahlgren, 1906
| 4 5 | Genera Species | Taxom | | Tribe | Willowsiini Yoshii & Yayuk, 1989
| 1 2 | Genus Species | Taxom |
Genera for Pennsylvania 1 Genera with 2 Species
Species list for Pennsylvania 2 Species
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