baccharis galls

(coyote brush galls)

Member of insects (class Insecta)
hexapods (subphylum Hexapoda)
arthropods (phylum Arthropoda)
animals (kingdom Animalia)
galls

coyote brush bud gall midge
Rhopalomyia californica

coyote brush bud gall midge
Rhopalomyia californica

forms in place of buds on coyote brush (Baccharis pilularis)
a lumpy gall up to 20 mm wide at the tip of a branch
often has leaves growing through the gall

coyote brush twisted stem gall midge
Rhopalomyia baccharis

coyote brush twisted stem gall midge
Rhopalomyia baccharis

forms within branches of coyote brush (Baccharis pilularis)
a swelling and slight bending of the twig
adults look the same as coyote brush bud gall midge (Rhopalomyia californica), but galls and pupae are different

coyote brush stem gall moth
Gnorimoschema baccharisella

coyote brush stem gall moth
Gnorimoschema baccharisella

forms within branches of coyote brush (Baccharis pilularis)

desert broom gallfly
Aciurina thoracica

desert broom gallfly
Aciurina thoracica

forms within branches of coyote brush (Baccharis pilularis)

4 observed taxons / 1 key

Chris’s observations: 48 (25 are research grade)

Locations:

Bear Creek Redwoods OSP: 7
Edgewood Park & Natural Preserve: 4
Fremont Older OSP: 3
Santa Teresa CP: 3
Windy Hill OSP: 3
Lake Chabot RP: 2
Monte Bello OSP: 2
Murray Ranch SP: 2
Russian Ridge OSP: 2
Sibley Volcanic RP: 2
Waterdog Lake & Open Space: 2
Calero CP
Coyote Valley OSP
El Corte de Madera OSP
Henry Cowell Redwoods SP
Huckleberry Botanic RP
Jacks Peak CP
Mt. Madonna SP
Nisene Marks SP
Pescadero Creek CP
Picchetti Ranch OSP
Quicksilver CP
San Bruno Mountain State & County Park
San Pedro Valley CP
Sanborn CP
Sweeney Ridge National Recreation Area
Wunderlich CP

Months:

Jan.: 2
Feb.: 5
Mar.: 2
Apr.: 1
May: 3
Jun.: 3
Jul.: 3
Aug.: 6
Sep.: 5
Oct.: 1
Nov.: 12
Dec.: 5

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