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Treebeard: Umber Skipper (Poanes melane, Hesperia, Hesperiidae) butterfly in a classic "jet plane" pose
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Treebeard: Syrphid Flower Fly (Syrphidae, Diptera) perched on Western Bracken Fern (Pteridium aquilinum var. pubescens, Polypodiaceae)
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Treebeard: Cute little Treehopper (Membracidae, Homoptera) - maybe genus Cyrtolobus?
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Treebeard: Snipe Fly (Rhagionidae, Diptera) - maybe genus Rhagio - on Coffee Berry (Rhamnus tomentella or Rhamnus californica, Rhamnaceae)
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Treebeard: Fantastic nymph of a Bush Katydid (Scudderia, Tettigoniidae, Orthoptera) on Caterpillar Phacelia (Phacelia cicutaria var. hispida, Hydrophyllaceae or Boraginaceae)
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Treebeard: Tiny fly (Diptera) on a single petal of native Canyon Sunflower (Venegasia carpesioides, Asteraceae)
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Treebeard: Pollen-dusted Bumble Bee (Bombus, Anthophila, Hymenoptera) on flower of native Canyon Sunflower (Venegasia carpesioides, Asteraceae)
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Treebeard: Beautiful little Wasp (Hymenoptera) - maybe a Sawfly in the family Tenthredinidae?
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Treebeard: "Stink Bug" (Pentatomidae, Hemiptera) - maybe the Green Stink Bug (Chinavia, Nezarini)
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Treebeard: Variable Checkerspot (Euphydryas chalcedona) butterfly on native Mugwort (Artemisia douglasiana, Asteraceae)
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Treebeard: Wild Bee (Anthophila, Hymenoptera) working a flower of native Southern California Dudleya (Dudleya lanceolata, Crassulaceae)
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Treebeard: Mating pair of unusual "Timema" insects (Timematidae, Timematodea, Phasmatodea)
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Treebeard: Bee Assassin (Apiomerus californicus, Reduviidae, Hemiptera) under white flower of California Thistle (Cirsium occidentale var. californicum, Asteraceae)
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Treebeard: Hedgerow Hairstreak (Satyrium saepium) butterfly on Holly-leaved Cherry (Prunus ilicifolia, Rosaceae)
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Treebeard: Wild Bee (Anthophila, Hymenoptera) on California Figwort aka California Bee Plant (Scrophularia californica, Scrophulariaceae)
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Treebeard: Caterpillars of Variable Checkerspot (Euphydryas chalcedona) butterfly on foliage of Climbing Penstemon (Keckiella cordifolia, Scrophulariaceae or Plantaginaceae)
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Treebeard: Issid Planthopper insect (Issidae, Fulgoroidea, Homoptera) - probably Danepteryx robustad
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Treebeard: Wild Bee (Anthophila, Hymenoptera) on native California Figwort aka California Bee Plant (Scrophularia californica, Scrophulariaceae)
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Treebeard: Variable Checkerspot (Euphydryas chalcedona) butterfly on Canyon Sunflower (Venegasia carpesioides, Asteraceae)
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Treebeard: Variable Checkerspot (Euphydryas chalcedona) butterfly, on Wild Blackberry (Rubus ursinus, Rosaceae)
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Treebeard: Grasshopper (Acrididae, Orthoptera) - another Pallid-winged Grasshopper (Trimerotropis pallidipennis, Oedipodinae)
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Treebeard: Common Buckeye (Junonia coenia) butterfly on non-native flowers of Saltcedar or Tamarisk (Tamarix ramosissima, Tamaricaceae)
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Treebeard: Cute nymph of a Grasshopper (Acrididae, Orthoptera)
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Treebeard: Silvery Blue (Glaucopsyche lygdamus) butterfly working flowers of Deerweed (Lotus scoparius aka Acmispon glaber, Fabaceae)
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Treebeard: Brown Elfin (Callophrys augustinus) butterfly on Golden Yarrow (Eriophyllum confertflorum, Asteraceae)
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Treebeard: Native ants (Formicidae, Hymenoptera) tending a slug-like caterpillar on Wild Sweetpea (Lathyrus vestitus, Fabaceae)
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Treebeard: Native ant (Formicidae, Hymenoptera) tending a slug-like caterpillar on Wild Sweetpea (Lathyrus vestitus, Fabaceae)
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Treebeard: New flowers of California Honeysuckle (Lonicera hispidula, Caprifoliaceae) - with a Wild Bee (Anthophila, Hymenoptera)
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Treebeard: Bumble Bee (Bombus, Anthophila, Hymenoptera) on flower of Wild Sweetpea (Lathyrus vestitus, Fabaceae)
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Treebeard: California Sister (Adelpha bredowii) butterfly on foliage of Climbing Penstemon (Keckiella cordifolia, Scrophulariaceae or Plantaginaceae)