 Caterpillar of black swallowtail butterfly (Papilio polyxenes) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 23, 2010
 Disturbed caterpillar of black swallowtail butterfly (Papilio polyxenes) in defensive pose showing orange horns (osmeterium) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 23, 2010
 Caterpillar of black swallowtail butterfly (Papilio polyxenes) in defensive pose retracting orange horns (osmeterium) and showing three pairs of front legs in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 23, 2010
 Caterpillar of black swallowtail butterfly (Papilio polyxenes) in dew in Lick Creek Park. College Station, Texas, May 4, 2010
 Inactive black swallowtail butterfly (Papilio polyxenes) in dew in Lick Creek Park. College Station, Texas, May 4, 2010
 Field of prairie parsley (Polytaenia texana), home of many black swallowtail caterpillars, in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 16, 2010
 Black swallowtail butterfly (Papilio polyxenes) on Iron Bridge Trail in Lick Creek Park. College Station, Texas, June 4, 2010
 Black swallowtail butterfly (Papilio polyxenes) on Post Oak Trail at morning in Lick Creek Park. College Station, Texas, June 4, 2010
 Ventral surface of Black swallowtail butterfly (Papilio polyxenes) on Iron Bridge Trail in Lick Creek Park. College Station, Texas, June 4, 2010
 Earlier instar (dark with a white saddle) of Black swallowtail caterpillar (Papilio polyxenes) on an island in Lake Bryan Park. Bryan, Texas, April 22, 2010
 Tail part of black swallowtail butterfly (Papilio polyxenes) in Lake Bryan Park. Bryan, Texas, June 2, 2010
 Black swallowtail butterfly (Papilio polyxenes) on woodoats (Chasmanthium latifolium) on Iron Bridge Trail in Lick Creek Park. College Station, Texas, June 4, 2010
 Tail area of wings of Black swallowtail butterfly (Papilio polyxenes) on Iron Bridge Trail in Lick Creek Park. College Station, Texas, June 4, 2010
 Black swallowtail butterfly (Papilio polyxenes) at morning on a stalk of Slender bush clover in Lake Bryan Park. Bryan, Texas, June 2, 2010
 Stick caterpillar on black-eye susan flower in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 27, 2008
 Phaon(?) Crescent butterfly in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 29, 2010
 Salt Marsh Moth caterpillar (Estigmene acrea) feeding on Engelmann s daisy in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 9, 2010
 Butterfly in dew (ventral view) in Washington-on-the-Brazos State Historic Site. Washington, Texas, August 21, 2010
 Common Buckeye butterfly (Junonia coenia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 29, 2010
 Variegated Fritillary (Euptoieta claudia) butterfly in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 29, 2010
 Common Buckeye butterfly (Junonia coenia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, October 9, 2010
 Sleeping Buckeye butterfly (Junonia coenia) in dew in Washington-on-the-Brazos State Historic Site. Washington, Texas, October 9, 2010
 Black-eyed susan (Rudbeckia hirta) flowers in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 16, 2010
 Black-eyed susan (Rudbeckia hirta) with Scudder s Bush Katydid in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 16, 2010
 Beebalm (Monarda punctata) and black-eyed susan (Rudbeckia hirta) flowers in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 16, 2010
 Phaon Crescent (Phyciodes phaon) butterfly in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 23, 2010
 Striped caterpillar in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 4, 2012
 Brown caterpillar in Washington-on-the-Brazos State Historic Site. Washington, Texas, June 28, 2014
 Salt moth caterpillar in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 27, 2012
 Bull nettle flowers with a caterpillar(?) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 18, 2008
 Close up of salt moth caterpillar in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 27, 2012
 Small green caterpillar hanging on a net strand in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 16, 2009
 Mexican hat flower (Ratibida columnaris) with a caterpillar in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 3, 2020
 Frightened caterpillar spitting green fluid in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 4, 2012
 Buckeye caterpillar on purple gerardia(?) in Washington-on-the-Brazos State Historic Site. Washington, Texas, August 8, 2014
 Leaf of maypop (Passiflora foetida) with a Gulf fritillary caterpillar in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 25, 2020
 Green caterpillar on flowers of wild carrot (Daucus pusillus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 21, 2018
 Crescent(?) butterfly in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 7, 2011
 Butterfly in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 19, 2009
 Cardinal butterfly in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 19, 2012
 Skipper butterfly in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 7, 2011
 Buckeye butterfly in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 27, 2012
 Brown butterfly in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 19, 2012
 Orange butterfly in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 27, 2012
 Orange butterfly in Washington-on-the-Brazos State Historic Site. Washington, Texas, June 9, 2012
 Buckeye butterfly in Washington-on-the-Brazos State Historic Site. Washington, Texas, June 9, 2012
 Butterfly near a pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 12, 2014
 Close up of a butterfly in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 19, 2009
 Salt Marsh Moth caterpillar (Estigmene acrea) on Senecio(?) flower in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 12, 2018
 Orange butterfly near a pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, September 1, 2012
 Brown butterfly near a pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, October 6, 2012
 Question Mark Butterfly (Polygonia interrogationis) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 8, 2012
 Common Buckeye butterfly (Junonia coenia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 19, 2012
 Checkered skipper butterfly (Pyrgus communis) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 8, 2012
 Question Mark butterfly (Polygonia interrogationis) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 19, 2012
 Common Buckeye butterfly (Junonia coenia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 16, 2009
 Common Buckeye butterfly (Junonia coenia) on beebalm in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 19, 2012
 Question Mark butterfly (Polygonia interrogationis) on beebalm in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 19, 2012
 Common Buckeye butterfly (Junonia coenia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, June 28, 2014
 Gulf fritillary (Agraulis vanillae) butterfly in Washington-on-the-Brazos State Historic Site. Washington, Texas, September 6, 2009
 Cowpen daisy (Verbesina encelioides) with skipper butterfly in Washington-on-the-Brazos State Historic Site. Washington, Texas, September 7, 2008
 Gulf fritillary (Agraulis vanillae) butterfly on a tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, October 20, 2012
 Wing texture of Gulf fritillary (Agraulis vanillae) butterfly in Washington-on-the-Brazos State Historic Site. Washington, Texas, September 6, 2009
 Bark of black willow in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 8, 2012
 Black eyed susan with tachinid fly in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 4, 2012
 Black eyed susan and blue phlox in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 4, 2012
 Rough bark of black willow in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 8, 2012
 Black-eyes susan flower in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 27, 2008
 Black-eyed susan (Rudbeckia hirta) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 17, 2014
 Opening flower of black-eyed susan (Rudbeckia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 9, 2009
 Black Eyed Susan and beebalm near Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 4, 2012
 Insects on petals of black-eyed susan in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 24, 2012
 Black-eyed susan (Rudbeckia hirta) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 19, 2012
 Opening flower of black-eyed susan (Rudbeckia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 3, 2009
 Flowers of black eyed susan (Rudbeckia hirta) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 20, 2018
 Medallion lichen (Dirinaria confusa) with black apothecia in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 23, 2019
 Dense field of Black Eyed Susan near Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 4, 2012
 Black Eyed Susan and field parsley near Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 4, 2012
 Bark at the base of large black willow tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 8, 2012
 Field of black eyed susan flowers (Rudbeckia hirta) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 20, 2018
 Black apothecia of medallion lichen (Dirinaria confusa) in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 23, 2019
 Black eye susan flowers carpeting a field near Visitor complex in Washington-on-the-Brazos State Historic Site. Washington, Texas, June 2, 2007
 Sooty black mold (fungal growth) on hackberry leaves in Washington-on-the-Brazos State Historic Site. Washington, Texas, November 12, 2020
 Sooty black mold fungus on leaves of a hackberry tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, November 3, 2020
 Pepper-like lichen Sarcogyne regularis(?) with black cyanobacteria on sandstone in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 1, 2020
 Bahia grass (Paspalum notatum) with black anthers on a lawn in Washington-on-the-Brazos State Historic Site. Washington, Texas, August 2, 2020
 Field of Black Eyed Susan (Rudbeckia hirta) on Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 4, 2012
 Caloplaca together with a black lichen Endocarpon pusillum on a sandstone rock in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 21, 2020
 Blooming poison ivy in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 1, 2010
 Pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, November 28, 2010
 Crane fly in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 19, 2010.
 Lichens on a tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 16, 2010
 Black velvet leatherleaf slug Belocaulus angustipes on Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, August 2, 2020
 Early blooming black eyed susan flower (Rudbeckia hirta) in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 8, 2021
 Phacelia flowers in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 19, 2010.
 Tree bark texture in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 16, 2010
 Blooming plum(?) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 19, 2010.
 Buttercup (Ranunculus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 19, 2010.
 Lichens covering a tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 16, 2010
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