Favoritos de swbirder

I searched very hard for F. wislizeni this trip, and documented every Ferocactus found, but found none, and I would have called this one F. cylindraceus but the AI is calling it wislizeni on most of the pics.

One valve found in the extensive shore deposits of barnacles, Balanus amphitrite, with Tilopia bones in 15 minutes of looking. Nearly 30 species of marine invertebrates were deliberately introduced into the Salton Sea, including at least 14 bivalves (Carpelan & Linsley 1961), and others were accidently introduced with other species. I don't believe any bivalve species survive today.

In leaflets of Olneya tesota. Each gall contained a single larva - photo #2. The galls are bladder-like with a very thin wall and pretty much occupy an entire leaflet. I collected several in a clear plastic container. Within an hour many larvae had exited the galls and were crawling about. After five days they appear to be alive but affixed tightly to the container wall. My guess is that they would be seeking to pupate/estivate in or near the soil. Galled leaflets soon abort from the leaf.

ID provided by R. Gagne
Reared from galls on Desert Ironwood, Olneya tesota.

Adult emerged 9 days after larvae exited the leaf gall:
https://www.inaturalist.org/observations/88486346
Length approx. 2 mm.

Adult emerged from apparent l-tridentata-fringed-cup-galls from this observation. First five photos through glass. Fifth photo includes exuviae. Last four are from December 17 - looks to be on its last legs.

First observed this individual on Feb 10, 2018 and my nephew was along this time so was able to better determine a height of about 16 feet. Easily the largest specimen I've seen. https://www.inaturalist.org/observations/10052128