There are many different species of ticks in New Brunswick, Nova Scotia and PEI. Those that we have collected in the Maritimes and archived in the Mount Allison tick bank are: Ixodes scapularis, Ixodes cookei, Ixodes hexagonus, Dermacentor variablis, Dermacentor andersoni, Amblyomma americanum among others. Ixodes scapularis, the black legged tick or the deer tick, and Ixodes cookei or the groundhog tick or woodchuck tick, are the primary vectors for Lyme disease.
Whether a given tick can infect a human or other animal depends on whether it is infected and how long it feeds. However, all ticks can carry multiple pathogens so any tick bite should be recorded.
Each species of tick looks a bit different but the extent of engorgement (feeding), life stage, sex and other factors can make them look different. The "Tick Gallery" page has various pictures of each species.
These links provide good resources for identifying ticks.
We are happy to identify any ticks submitted by mail (see "submitting your tick" or high resolution images (many cell phones will take good close up pictures).
The Mount Allison Tick Bank is a resource of ticks, tick DNA, protein, images and metadata that is available to other researchers and community groups.