Genus

Hackberry Gall Psyllids

Pachypsylla

2 species in our catalog · found in 2 parks

KingdomAnimalia (Animals)
PhylumArthropoda (Arthropods)
ClassInsecta (Insects)
OrderHemiptera (True Bugs, Hoppers, Aphids, and allies)
FamilyAphalaridae
GenusPachypsylla (Hackberry Gall Psyllids)

Species in this group

Endemic

Pachypsylla venusta

Daily sighting probability ~10% · With luck

Pachypsylla celtidismamma

Daily sighting probability <5% · Rare

Daily sighting probability by month

Probability-weighted average across the group's species

<5%

Jan

<5%

Feb

~10%

Mar

<5%

Apr

~10%

May

~10%

Jun

~10%

Jul

~10%

Aug

~10%

Sep

<5%

Oct

~10%

Nov

~20%

Dec

When they're spotted

When the group's species are recorded (aggregated)

Where to see Hackberry Gall Psyllids

Warmer areas are where this group is recorded most often. Our parks Our cities

Parks Ranked

#	Park	Country	Species	Daily sighting probability
1	Zion National Park	🇺🇸 United States	1 of 2	~10%
	Hackberry Petiole Gall Psyllid			~10%
2	Shenandoah National Park	🇺🇸 United States	2 of 2	~10%
	Hackberry Petiole Gall Psyllid			<5%
	Hackberry Nipplegall Psyllid			<5%

Cities Ranked

#	City	Country	Species	Daily sighting probability
1	Dallas	🇺🇸 United States	2 of 2	~20%
	Hackberry Petiole Gall Psyllid			~10%
	Hackberry Nipplegall Psyllid			~10%
2	Austin	🇺🇸 United States	2 of 2	~10%
	Hackberry Petiole Gall Psyllid			~10%
	Hackberry Nipplegall Psyllid			<5%
3	Minneapolis [Saint Paul]	🇺🇸 United States	1 of 2	~10%
	Hackberry Nipplegall Psyllid			~10%
4	Chicago	🇺🇸 United States	2 of 2	~10%
	Hackberry Nipplegall Psyllid			~10%
	Hackberry Petiole Gall Psyllid			<5%
5	San Antonio	🇺🇸 United States	2 of 2	~10%
	Hackberry Petiole Gall Psyllid			~10%
	Hackberry Nipplegall Psyllid			<5%
6	New York City	🇺🇸 United States	2 of 2	~10%
	Hackberry Nipplegall Psyllid			~10%
	Hackberry Petiole Gall Psyllid			<5%
7	Houston	🇺🇸 United States	2 of 2	~10%
	Hackberry Petiole Gall Psyllid			~10%
	Hackberry Nipplegall Psyllid			<5%
8	Washington	🇺🇸 United States	2 of 2	~10%
	Hackberry Nipplegall Psyllid			<5%
	Hackberry Petiole Gall Psyllid			<5%
9	Montreal	🇨🇦 Canada	1 of 2	~10%
	Hackberry Nipplegall Psyllid			~10%
10	Philadelphia	🇺🇸 United States	2 of 2	~10%
	Hackberry Nipplegall Psyllid			<5%
	Hackberry Petiole Gall Psyllid			<5%
11	Detroit	🇺🇸 United States	1 of 2	~10%
	Hackberry Nipplegall Psyllid			~10%
12	Boston	🇺🇸 United States	1 of 2	~10%
	Hackberry Nipplegall Psyllid			~10%
13	Denver	🇺🇸 United States	1 of 2	~10%
	Hackberry Nipplegall Psyllid			~10%
14	Toronto	🇨🇦 Canada	1 of 2	~10%
	Hackberry Nipplegall Psyllid			~10%
15	Salt Lake City	🇺🇸 United States	1 of 2	<5%
	Hackberry Nipplegall Psyllid			<5%
16	Baltimore	🇺🇸 United States	1 of 2	<5%
	Hackberry Nipplegall Psyllid			<5%

Hackberry Gall Psyllids

Species in this group

Hackberry Petiole Gall Psyllid

Hackberry Nipplegall Psyllid

Daily sighting probability by month

When they're spotted

Where to see Hackberry Gall Psyllids

Parks Ranked

Cities Ranked