Below is a working checklist of Mount Desert Island's cockroaches. Procter (1946) included the species below in Order Orthoptera. Please send corrections and updates to info@vfthomas.com. Photographs are welcome. Thank you.
| Family | Genus | Specific Epithet | authority | common name | Source (full citation given after this table) |
| Blattidae | Blatta | orientalis | L. | Oriental Cockroach | Bar Harbor: Procter (1946, p. 36., "grocery store") |
| Blattelidae [see note 1 below] |
Blatella | germanica | (L.) | German Cockroach | town not given: Procter (1946, p. 37., "present in very large numbers owing to unsanitary conditions in some places") |
| Blattelidae [see note 1 below] |
Nyctibora | laevigata | (Beauvois) | ? | Southwest Harbor: Procter (1946, p. 37., "market ... probably introduced on bananas" [see note 2 below]) |