Dicromantispa sayi
In 3 days ~10% in a week ~20%
Dicromantispa sayi, or Say's mantidfly is a species of mantidfly in the family Mantispidae. It is found in the Caribbean Sea, Central America, and North America. Head: Brown to black with pale yellow marks. Face has a longitudinal yellow stripe each side of center; middle dark area appearing as a dark stripe, sometimes incomplete. Pattern of yellow oblong spots on top of head; can be obscure. Eyes multi-colored.
Antenna: Brown except segment 1 yellowish, more so on underside. Thorax: Neck (prothorax) long and slender, more cone-shaped at head. Cream-colored patch at base and end of neck; rest yellowish-brown to dark brown. Usually with a light or dark colored longitudinal stripe down center. Thorax side on female dark with cream, curved lines. Male sides mostly pale.
Wings: Wings clear with brown veins; no brown spots at wing tips. Base and outside edge of wings dark brown (costa area), with a faint yellowish streak. Stigma at end of costa also dark brown. Legs: Front legs modified, similar to praying mantis; dark brown with light streaks. Usually folded up and not used, except for eating. Mid and hind legs pale yellow with brown streaks; females have joint to... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Everglades National Park | 🇺🇸 United States | |
| 2 | Cumbres de Monterrey National Park | 🇲🇽 Mexico |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Boston | 🇺🇸 United States | |
| 2 | Chicago | 🇺🇸 United States | |
| 3 | Austin | 🇺🇸 United States | |
| 4 | Toronto | 🇨🇦 Canada | |
| 5 | Minneapolis [Saint Paul] | 🇺🇸 United States | |
| 6 | New York City | 🇺🇸 United States | |
| 7 | Washington | 🇺🇸 United States | |
| 8 | Houston | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Say's Mantidfly sighting in Boston on a given day, based on 26 verified sightings from GBIF citizen-science data. It is the 406th 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 20%, if each day is a fresh chance.
July
In that month about 10% of wildlife watchers report a Say's Mantidfly in Boston on a given day, against under 5% in August to June, the lowest months.
Between 9 pm and midnight
Across all the parks we cover, that three-hour window holds the most Say's Mantidfly sightings with a recorded time, and about 9 in 10 of them come between 6 pm and 6 am: it is mostly seen at night.
Yes
Of the 8 cities where we can rate Say's Mantidfly sightings, Boston has the highest daily chance: under 5%. Next come Chicago (United States, under 5%) and Austin (United States, under 5%).
GBIF citizen-science records
It is estimated from how often the Say's Mantidfly is recorded against all the insects logged in Boston (26 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.
