Psilocorsis quercicella — Oak Leaftier

Clemens, 1860

Hodges# 0955

Etymology

Psilocorsis: Combines the Greek psilos, meaning “bare,” with Latin cor, meaning “heart,” and the Greek suffix, sis, used to form action nouns.

quercicella: The Latin quercea, meaning “oaken” or “of oak,” with the suffix ella meaning “small.”

Pronunciation

sye-loh-kor-sis kwur-kis-el-uh

Documented Occurrences

This map shows the confirmed sightings of oak leaftier in Indiana. All sightings were confirmed through photographic documentation by individuals who contributed to the Great American IN Nature Lepidoptera Project (GAIN LP).

Documented North American Sightings as of 3/24/2020

GAIN LP Sightings

Date	County	Observer	Notes	Image1	Image2
2022-07-23	Brown	Byers, Ronda
2021-08-05	Brown	Jaskula, Jeanette	Adult
2021-08-01	Hamilton	McCord, Dan	Adult
2020-08-15	Hamilton	Kant, Nancy	Adult
2020-07-31	Hamilton	McCord, Dan	Adult confirmed
2019-08-17	Porter	Joll, Chris	Adult taken at Indiana Dunes State Park
2019-08-13	Brown	Pollock, Michele	Brown

Observation Details	Images
Date: 2022-07-23 County: Brown Observer: Byers, Ronda Notes:
Date: 2021-08-05 County: Brown Observer: Jaskula, Jeanette Notes: Adult
Date: 2021-08-01 County: Hamilton Observer: McCord, Dan Notes: Adult
Date: 2020-08-15 County: Hamilton Observer: Kant, Nancy Notes: Adult
Date: 2020-07-31 County: Hamilton Observer: McCord, Dan Notes: Adult confirmed
Date: 2019-08-17 County: Porter Observer: Joll, Chris Notes: Adult taken at Indiana Dunes State Park
Date: 2019-08-13 County: Brown Observer: Pollock, Michele Notes: Brown

Oak Leaftier Sightings by Month

Conservation Status

• Global status: GNR (not yet ranked)
• National status: NNR (not yet ranked)
• Indiana status: SNR (not yet ranked)

Floral Associates

Oak leaftier larvae primarily feed exclusively on the leaves of oaks (Quercus spp.) but have been documented on a few other native trees as well.

Known Larval Food Sources in Indiana
Family	Taxonomic Name	Common Name
Order: Fagales
Fagaceae	Castanea dentata	American chestnut
	Fagus grandifolia	American beech
	Quercus spp.	oaks
Order: Salicales
Salicaceae	Populus spp.	poplars