Keywords: chelostoma chelostoma philadelphi chelostomaphiladelphi taxonomy:binomial=chelostoma philadelphi taxonomy:binomial=chelostomaphiladelphi megachilidae prochelostoma baltimore county baltimorecounty towson biml droege pwrc usgs barc maryland apoidea anthophila bee bees pollinator philadelphus bug bugs pollinators animal animals animalia arthropod arthropods arthropoda insect insects insecta hymenoptera aculeata megachilinae osmiini face portrait eye eyes compound eyes compoundeyes ommatidia ommatidium ocelli antenna antennae sensory array sensoryarray sensor array sensorarray sensory organs sensoryorgans labrum mandible mandibles scape pedicel flagellum black tegula tegulae md zerene zerene stacker zerenestacker stacked head compound eye compoundeye macro macro photography macrophotography stackshot usgsbiml black background texture people photo border drawing Chelostoma philadelphi, Towson, Maryland, Baltimore County Chelostoma philadelphi, Towson, Maryland, Baltimore County |