Summary description from Wikipedia:

Erynnis tristis in languages:

English

Mournful Duskywing

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Parent Taxon

• Erynnis

Sibling Taxa

• Erynnis afranius
• Erynnis baptisiae
• Erynnis brizo
• Erynnis funeralis
• Erynnis horatius
• Erynnis icelus
• Erynnis invisus
• Erynnis juvenalis
• Erynnis lassauxi
• Erynnis lucilius
• Erynnis marloyi
• Erynnis martialis
• Erynnis mercurius
• Erynnis meridianus
• Erynnis montanus
• Erynnis pacuvius
• Erynnis pelias
• Erynnis persius
• Erynnis popoviana
• Erynnis propertius
• Erynnis scudderi
• Erynnis tages
• Erynnis telemachus
• Erynnis tristis
• Erynnis zarucco

Child Taxa

• Erynnis tristis pattersoni
• Erynnis tristis tatius
• Erynnis tristis tristis

Top Observation Places

• Harlingen
• Encinitas
• Santa Barbara
• Monterrey
• Guadalupe
• Lodi
• Riverside
• Moreno Valley
• Corona
• Redlands
• Highland
• Colton
• El Cajon
• Mira Mesa
• La Mesa
• Rancho Penasquitos
• Santee
• Poway
• Santa Ana
• Irvine
• Orange
• Mission Viejo
• Lake Forest
• Tustin
• Laguna Niguel
• Aliso Viejo
• McAllen
• Edinburg
• Mission
• Pharr
• San Jose
• Sunnyvale
• Santa Clara
• Daly City
• San Mateo
• Redwood City
• Mountain View
• South San Francisco
• Palo Alto
• Santa Cruz
• Cupertino
• Sacramento
• Roseville
• Arden-Arcade
• Citrus Heights
• Folsom
• Rancho Cordova
• Davis
• Carmichael
• West Sacramento