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25 <br /> <br />INVERTEBRATES <br />Crotch bumble bee (Bombus crotchii). California Candidate for Endangered. <br />This native species of bee occurs primarily in California, including the Mediterranean climate <br />region of the state, Pacific coast, western desert, the Great Valley, and adjacent foothills <br />throughout most of southwestern California. It has also been documented in southwest Nevada, <br />near the California border. There are a few scattered observations around the Bay Area, but most <br />are confined to coastal southern California. Habitat for this species includes open grassland and <br />scrub areas, and this species is able to persist in semi-natural habitats surrounding by intensely <br />modified landscapes. This species usually nests underground. Food plants for the Crotch bumble <br />bee include Asclepias, Chaenactis, Lupinus, Medicago, Phacelia, and Salvia. <br />The CNDDB lists one occurrence of Crotch bumble bee within five miles of the Property. <br />Occurrence #17 was observed approximately 1 mile east of the Property in the vicinity of the <br />City of Pleasanton. The specimen was collected in 1932 but the occurrence is presumed extant. <br />The Xerces Society manages the Bumble Bee Watch (Xerces 2022), which maps the location of <br />native bee species throughout North America. The Bumble Bee Watch does not have any <br />sightings of this species in the vicinity of the Property. Potential food plants for this species, <br />including silver lupine (Lupinus albifrons) and California burclover (Medicago polymorpha), <br />were observed growing on the Property. Given the information above, it was determined that <br />there is a low potential for the crotch bumble bee to occur on the Property within the annual <br />grassland habitat areas. <br />Western bumble bee (Bombus occidentalis). California Candidate for Endangered. <br />This species of bee occurs in Canada and the USA from southern British Columbia to central <br />California, northern Arizona and northern New Mexico, and east into southern Saskatchewan <br />and northwestern Great Plains. This species is found in a range of habitats including mixed <br />woodlands, farmlands, urban areas, montane meadows, and into the western edge of the prairie <br />grasslands. This species usually nests underground. Food plants include Ceanothus, Centaurea, <br />Chrysothamnus, Cirsium, Geranium, Grindellia, Lupinus, Melilotus, Monardella, Rubus, <br />Solidago, and Trifolium. <br />The CNDDB lists one occurrence of Western bumble bee within five miles of the Property. <br />Occurrence #230 was observed approximately 1 mile east of the Property in the vicinity of the <br />City of Pleasanton. The specimen was collected in 1952 but the occurrence is still presumed <br />extant. The Xerces Society manages the Bumble Bee Watch (Xerces 2022), which maps the <br />location of native bee species throughout North America. The Bumble Bee Watch does not have <br />any sightings of this species in the vicinity of the Property. Potential food plants for this species,