Alydus eurinus
In 3 days ~10% in a week ~20%
Alydus eurinus is a species of broad-headed bug in the family Alydidae. It is found in North America. Alydus eurinus is mostly dark in color with lighter markings sometimes observed on the legs and abdomen. However, coloring on the side of the head is absent. Fine hairs cover the body. The corners of the posterior pronotum plate are rounded, while in a similar species, Alydus pilosulus, the corners are more angular. Their wings are dark in color and possess many longitudinal veins, which distinguish them from the morphologically similar family, Lygaeidae.
Alydus uses ridges, or stridulitrum, on the forewing and nodes, or plectrum, on the femur to produce stridulation. These structures are present on both sexes. The stridulitrum consists of a series of equidistant ridges which are the longest at the midsection of the corium. The plectrum consists of nodes found on the legs which are a project of bone or stiff tissue which are along and across the femur. The sound which is produced is theorized to be of low intensity due to the small size of the plectrum's nodes and to be an assortment of notes rather than one.
Alydus eurinus feeds mostly... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Montreal | 🇨🇦 Canada | |
| 2 | Boston | 🇺🇸 United States | |
| 3 | Toronto | 🇨🇦 Canada | |
| 4 | Washington | 🇺🇸 United States | |
| 5 | New York City | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report an Alydus eurinus sighting in Montreal on a given day, based on 31 verified sightings from GBIF citizen-science data. It is the 282nd most-seen of the 926 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 20%, if each day is a fresh chance.
September
In that month about 10% of wildlife watchers report an Alydus eurinus in Montreal on a given day, against under 5% in October to August, the lowest months.
Yes
Of the 5 cities where we can rate Alydus eurinus sightings, Montreal has the highest daily chance: under 5%. Next come Boston (United States, under 5%) and Toronto (Canada, under 5%).
Same order: Hemiptera
The closest relatives of the Alydus eurinus that you can see in Montreal (order Hemiptera, True Bugs, Hoppers, Aphids, and allies) are Eastern Boxelder Bug (about 10%), Northern Dog-Day Cicada (about 10%) and Brown Marmorated Stink Bug (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Alydus eurinus is recorded against all the insects logged in Montreal (31 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.
