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Soil Investigations for Data Collection in the Delta Initial Study/Proposed Mitigated Negative Declaration 81 cysts that lie buried in the soil until winter rains trigger hatching. Individuals reach maturity in 3 to 4 weeks, at approximately 0.4 inches or more in carapace length. Multiple hatchings within a single wet season allow the vernal pool tadpole shrimp to persist within pools as long as the habitat remains inundated, though hatching rates become significantly lower once water temperatures reach 68 degrees Fahrenheit (USFWS 2007d). Vernal pool tadpole shrimp has moderate potential to occur within the Study Area based on the presence of suitable habitat. Implementation of Mitigation Measures MM BIO-1 and MM BIO-12 would avoid and minimize adverse impacts to suitable habitat and would reduce potential impacts to vernal pool tadpole shrimp to: Less than Significant with Mitigation Incorporated. California linderiella (Linderiella occidentalis) California linderiella has a NatureServe ranking of G2G3S2S3 and is included on CDFW’s Special Animals List but is not listed under FESA or CESA. This species is a 9 to 10 mm long, short-lived aquatic crustacean found in ephemeral freshwater habitats. It is endemic to California, and its known range is limited to the Central Valley. It occurs in vernal pools that vary widely in size but are generally found in deeper pools with clear to turbid water. California fairy shrimp are the longest-lived fairy shrimp species in the Central Valley, having been observed to live up to 168 days, and requiring a minimum of 31 days to reach maturity. They are also highly tolerant of high water temperatures and have been found in pools ranging from 41 to 85 degrees Fahrenheit. This species frequently co-occurs with vernal pool fairy shrimp and is usually numerically dominant (CDFW 2019c). California linderiella has moderate potential to occur within the Study Area based on the presence of suitable habitat. Implementation of Mitigation Measures MM BIO-1 and MM BIO-12 would avoid and minimize adverse impacts to suitable habitat and would reduce potential impacts to California linderiella to: Less than Significant with Mitigation Incorporated. Molestan blister beetle (Lytta molesta) Molestan blister beetle has a NatureServe ranking of G2S2 and is included on CDFW’s Special Animals list but is not listed under FESA or CESA. This species is a ground nesting beetle that feeds on flowers. It is endemic to California, and its current known range includes the Central Valley. The species occurs in grasslands and vernal pools. Very little is known about the life history or behavior of this species. Other species in the genus Lytta oviposit in the underground nests of solitary bees, where their larvae consume pollen stores, and sometimes bee larvae. It has been collected from early April through early July (CDFW 2019c). Molestan blister beetle has the potential to occur in the Study Area; however, this potential is low because the closest known occurrence of this species is