Pseudozizeeria maha
In 3 days ~70% in a week ~90%
Pseudozizeeria maha, the pale grass blue, is a small butterfly found in South Asia that belongs to the lycaenids or blues family. The species was first described by Vincenz Kollar in 1844. The subspecies of Pseudozizeeria maha are-
Pseudozizeeria maha saishutonis (Matsumura, 1927) – Korea Pseudozizeeria maha argia (Ménétriès, 1857) – Japan Male. Upperside silvery light blue with a satiny sheen in certain lights. Forewing: the apical half of the costa narrowly and the terminal margin for varying widths fuscous black, bounded outwardly on the latter by an obscure anteciliary black line. Hindwing: the costa broadly, the termen somewhat more narrowly fuscous black as in the forewing, with the width of this dark edging similarly variable; in addition there is a very diffuse and ill-defined subterminal series of spots darker than the fuscous margin. Underside... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Manas National Park | 🇮🇳 India | |
| 2 | Nikko National Park | 🇯🇵 Japan | |
| 3 | Taroko National Park | 🇹🇼 Taiwan |
Possible
About 30% of wildlife watchers report a Pale Grass Blue sighting in Tokyo on a given day, based on 2,125 verified sightings from GBIF citizen-science data. It is the most-seen of the 1013 insects we can rate there. Over three days the chance rises to about 70%, and over a week to about 90%, if each day is a fresh chance.
October
In that month about 50% of wildlife watchers report a Pale Grass Blue in Tokyo on a given day, against under 5% in January to March, the lowest months. That is one of Tokyo's wettest months, with about 250 mm of rain against 75 mm in February.
Between noon and 3 pm
Across all the parks we cover, that three-hour window holds the most Pale Grass Blue sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
12th of 61
Of the 61 cities where we can rate Pale Grass Blue sightings, Tokyo ranks 12th at about 30%. The best odds are in Gwangju (South Korea, about 60%), Jamshedpur (India, about 50%) and Kanpur (India, about 40%).
Same family: Lycaenidae
The closest relatives of the Pale Grass Blue that you can see in Tokyo (family Lycaenidae, Gossamer-winged Butterflies) are Small Copper (about 20%), Pea Blue (about 10%) and Short-Tailed Blue (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Pale Grass Blue is recorded against all the insects logged in Tokyo (2,125 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.
