Gryllus pennsylvanicus
In 3 days ~10% in a week ~30%
Gryllus pennsylvanicus is known as the fall field cricket. G. pennsylvanicus is widespread across much of North America from southern Ontario into parts of northern Mexico. It tends to be absent in most of the southwestern United States including southern California. Within its geographic range this field cricket will burrow into soil in fields and forest edges. Individuals inhabit grassy disturbed areas and are often found around areas of human habitation.
Adults reach 15–25 millimetres (0.6–1.0 in) and coloration ranges from dark black to dark brown, although some specimens show a slight reddish tint. The black antennae tend to be longer than the body span of the species. The cerci are longer than the head and prothorax, and the wings do not extend past the cerci.
During the breeding season, the number of adult female G. pennsylvanicus captured in pitfall traps peaks approximately two weeks after the peak in the number of adult males captured, which seems to indicate protandry. Breeding in some areas also coincides with the seed rain from certain agricultural weeds, possibly providing females with food resources to increase their fecundity.... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Acadia National Park | 🇺🇸 United States | |
| 2 | Great Bear Rainforest | 🇨🇦 Canada |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Montreal | 🇨🇦 Canada | |
| 2 | Toronto | 🇨🇦 Canada | |
| 3 | Boston | 🇺🇸 United States | |
| 4 | Minneapolis [Saint Paul] | 🇺🇸 United States | |
| 5 | Baltimore | 🇺🇸 United States | |
| 6 | Philadelphia | 🇺🇸 United States | |
| 7 | Vancouver | 🇨🇦 Canada | |
| 8 | Washington | 🇺🇸 United States | |
| 9 | Denver | 🇺🇸 United States | |
| 10 | Chicago | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Fall Field Cricket sighting in Boston on a given day, based on 33 verified sightings from GBIF citizen-science data. It is the 336th most-seen of the 1200 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 30%, if each day is a fresh chance.
September and October
In those months about 10% of wildlife watchers report a Fall Field Cricket in Boston on a given day, against under 5% in November to August, the lowest months.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Fall Field Cricket sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
3rd of 11
Of the 11 cities where we can rate Fall Field Cricket sightings, Boston ranks 3rd at under 5%. The best odds are in Montreal (Canada, about 10%) and Toronto (Canada, under 5%).
GBIF citizen-science records
It is estimated from how often the Fall Field Cricket is recorded against all the insects logged in Boston (33 verified sightings), calibrated against known sighting rates. Figures are rounded to the nearest 10% because citizen-science data supports honest approximations, not decimals, and months with records from fewer than five people show "—". How it works.
