Hackberry Nipple Gall
Pachypsylla celtidismamma
Pachypsylla celtidismamma, known generally as the hackberry nipplegall maker or hackberry psylla, is a species of plant-parasitic hemipteran in the family Aphalaridae. Source
Where it is now
In the last 8 weeks this insect was recorded 15 times across 3 areas (each area is a 5 degree square).
See the Hackberry Nipple Gall on the live map
Arrival dates
The week it was first heard regularly in each region, after at least six weeks away. Dates differ from south to north, so a region has a range.
| Region | First arrival | Last arrival | Typical peak | Areas |
|---|---|---|---|---|
| North America | 13 April 2026 | 13 April 2026 | 4 May 2026 | 1 |
Figures are effort corrected and come from automatic sound identification, which makes mistakes. How this is measured and how it compares with human observers.