TABLE 4.C-1
SPECIAL-STATUS SPECIES POTENTIALLY OCCURRING WITHIN THE PROJECT SITE
Common Name Scientific Name |
Listing Status USFWS/ CDFW/CNPSa |
General Habitat |
Potential for Species Occurrence Within Project Site |
Period of Identification |
SPECIES LISTED OR PROPOSED FOR LISTING
Invertebrates
San Bruno elfin butterfly Callophrys mossii bayensis |
FE/-- |
Inhabits rocky outcrops and cliffs on north-facing, often shady slopes in coastal scrub and relatively undisturbed grasslands. Larval host plant is Sedum spathulifolium. |
Low. Host plant not observed to date and not expected to occur on Project Site due to lack of suitable habitat. Species occurs on San Bruno Mountain. |
February–April |
Bay checkerspot butterfly Euphydras editha bayensis |
FT/-- |
Restricted to native grasslands on outcrops of serpentine, with dwarf plantain and owl’s clover as host plants. |
Low. No suitable habitat. Project Site. Critical habitat is located on San Bruno Mountain but not within Project Site. |
February–May |
Mission blue butterfly Plebejus icarioides missionensis |
FE/-- |
Coastal scrub and grassland habitat. Requires Lupinus albifrons, L. variicolor, or L. formosus as larval host plant. |
Moderate. One unidentified lupine species,(i.e. Lupinus sp. not keyed to the species level) was observed on Icehouse Hill during ESA’s 2011 reconnaissance site visit, and multiple occurrences of mission blue butterfly are documented on lands within 0.25 mile west of the Project Site and on San Bruno Mountain. |
March–July |
Callippe silverspot butterfly Speyeria callippe callippe |
FE/-- |
Occurs in grasslands with a native component. Host plant is Viola pedunculata. |
High. Host plant is present on Icehouse Hill where grasses are grazed by horses, and individual plants show signs of insect herbivory. Multiple occurrences are documented on lands within 0.25 mile of the Project Site and on San Bruno Mountain. |
May–July |
Myrtle’s silverspot butterfly Speyeria zerene myrtleae |
FE/-- |
Coastal dune and coastal prairie habitat. Larval food plant is Viola adunca. |
Low. Dune habitat is not present. Type locality is given as “San Mateo County,” but no location is given. Historic reference. |
June–September |
Fish
Central California coast steelhead Oncorhynchus mykiss |
|
Spawns and rears in coastal streams between the Russian River and Aptos Creek, as well as drainages tributary to San Francisco Bay, where gravelly substrate and shaded riparian habitat occur. |
Moderate. No spawning habitat available, but may occasionally stray into Brisbane Lagoon or Visitacion Creek. Juveniles are known to spend time in San Francisco Bay. |
Fall through spring |
Central Valley steelhead Oncorhynchus mykis |
FT |
Spawns in Central Valley gravel-bed streams. Adults and juveniles migrate through San Francisco Bay. No documented straying into South Bay |
Low. Juveniles may wander south of Hunters Point in small numbers, possibly present |
Fall through spring |