Draft Report on 2022's count for Mt. Diablo

Thank you to Paul for sending this on.

Mount Diablo, CA. Yr. 43, 38°, -121.8871°, center at 1 km SW of Nortonville. See 1980 report for habitats. Imminent threats to habitat: Drought and Global Warming. 01 June 2022; 0900-1700 hrs; sun AM 76-100%, PM 76-100%; 70-95°F; wind 0-11 mi/hr. 11 observers in 5 parties. Total party-hours 35; total party-miles on foot 34. Observers: C. Chang, J. Cluck, M. Echeverria, S. Eyes, D. Fitzgerald, P. Johnson, Richard Kelson (contact info removed by me, Cat. Pls reach out if you need it), G. Morris, L. O'Brien, S. Seth, K. Ueda.
Anise Swallowtail 20, W. Tiger Sw. 51, Two-tailed Sw. 36, Pale Sw. 43, Checkered White 52, 'Margined' Mustard Wh. 9, Cabbage Wh. 106, Large Marble 1, 'Pacific' Sara Orangetip 1, Orange Sulphur 144, Gr. Copper 2, Gorgon Co. 190, Gr. Purple Hairstreak 1, Mountain Mahogany Ha. 1, Hedgerow Ha. 32, Thicket Ha. 2, Gray Ha. 11, Spring Azure 50, Acmon Blue 59, Gulf Fritillary 1, Coronis Fr. 3, Callippe Fr. 40, Leanira Checkerspot 6, Mylitta Crescent 77, 'Chalcedon' Variable Ch. 109, California Tortoiseshell 4, Mourning Cloak 2, Am. Lady 1, Red Admiral 2, Com. Buckeye 52, Lorquin's Admiral 16, California Sister 81, 'California' Com. Ringlet 56, Monarch 3, Propertius Duskywing 5, Mournful Du. 8, Small Checkered- Skipper 6, Com. Checkered-Sk. 24, N. White-Sk. 2, Rural Sk. 222, Umber Sk. 20. Unidentified: Papilio sp. 3, white sp. 6, hairstreak sp. 2, blue sp. 1, nymphalid sp. 3, skipper sp. 6. Total 41 species, 1572 individuals. Immatures: 'Chalcedon' Variable Ch. 30 caterpillars on Castilleja foliolosa. Field Notes: For the entire count, 41 species, 1,572 individuals counted at a rate of 45.2 individuals per party-hour. For Mt. Diablo State Park, 38 species, 1,330 individuals, at a rate of 51.8 per party-hour. For outside the park, 19 species, 242 individuals, 26.6 per hour. Satyrium californica was also observed in the state park but prior to the count date.

Posted on May 31, 2023 02:42 PM by catchang