CHALLENGES AND LIMITATIONS FOR THE RECOVERY OF THE RARE AND UNDERSTUDIED SAN JOAQUIN VALLEY GIANT FLOWER-LOVING FLY (RHAPHIOMIDAS TROCHILUS)

Mario E Gaytan; Algas Ecological Services; megaytan123@icloud.com;

The recovery of endangered species often relies on extensive research and persistent efforts by enthusiasts, scientists, and governmental organizations. However, some species, such as the San Joaquin Valley giant flower-loving fly (Rhaphiomidas trochilus; SJVF), face significant challenges that leave them at risk of extinction. Once inhabiting inland dunes as far north as Antioch, CA, the SJVF is now only found on a small dune preserve, 15 miles east of Bakersfield, CA. This rare species, one of the largest flies in North America, is difficult to study due to its deep underground larval stage, brief adult lifespan, and limited yearly “flight season” of only 4-7 weeks. These factors, compounded by the species' activity during the hottest part of the year and limited funding or interest, hinder the collection of important natural history data. Without sufficient research, protection, and recovery efforts, the long-term survival of the SJVF remains uncertain. Continued efforts are crucial, as they not only benefit the SJVF but could also support the restoration of other inland sand dune ecosystems and enhance recovery strategies for the federally endangered Delhi Sands flower-loving fly (R. terminatus abdominalis), found in Riverside County, CA.

Natural History of Invertebrates