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1462-05. Galls on an oak leaf near Birch Creek Unit of Somerville Lake State Park. Texas, July 19, 2014Similar picturesLarge thumbnails | Use small thumbnails | View as slideshow |
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1462-05. Galls on an oak leaf near Birch Creek Unit of Somerville Lake State Park. Texas, July 19, 2014Similar picturesLarge thumbnails | Use small thumbnails | View as slideshow |
 Close up of galls on an oak leaf near Birch Creek Unit of Somerville Lake State Park. Texas, July 19, 2014  Galls under an oak leaf in Birch Creek Unit of Somerville Lake State Park. Texas, November 11, 2012  Small, reddish spheres of oak leaf galls (specifically from the gall wasp Belonocnema kinseyi or a related cynipid species) harvested by ants at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, December 14, 2025  Galls (hollow blisters) on leaves of common ragweed (Ambrosia artemisiifolia) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, July 30, 2021  Small dark aphids on a leaf near Birch Creek Unit of Somerville Lake State Park. Texas, July 19, 2014  Galls (numerous pale green warts) on leaves of common ragweed (Ambrosia artemisiifolia) caused by eriophyid gall mites at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, July 30, 2021  Oak leaf galls (specifically from the gall wasp Belonocnema kinseyi or a related cynipid species) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Ants harvest the galls, carry them back to the nest to consume the nutritious outer layer, and often discard the hard inner "seed" (which contains the wasp larva) unharmed. This is a newly discovered form of "myrmecochory" (ant dispersal) where the gall wasp manipulates the ants to transport its offspring to the safety of the ant nest. Texas, December 14, 2025  Insect galls on fresh oak leaves at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, April 3, 2022  Jewel beetles (Buprestidae, Agrilus) on a woolly croton leaf at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, July 30, 2021  Jewel beetles (Buprestidae, genus Agrilus) on a leaf of Croton capitatus at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, July 30, 2021  Galls caused by eriophyid mites on leaves of common ragweed (Ambrosia artemisiifolia) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 3, 2021  Leaves of common ragweed (Ambrosia artemisiifolia) with galls caused by eriophyid mites at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 3, 2021  Oak galls on a trail in Birch Creek Unit of Somerville Lake State Park. Texas, November 11, 2012  Distorted leaves of common ragweed (Ambrosia artemisiifolia) with galls caused by eriophyid mites at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 3, 2021  Accumulation of oak galls on a trail in Birch Creek Unit of Somerville Lake State Park. Texas, November 11, 2012  Brown and greenish galls of lichenicolous fungus Tremella parmeliarum on powdered ruffle lichen (Parmotrema hypotropum) on a bush of upland swamp-privet in semi-open area at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, December 20, 2021  Narrow-leaf false dragonhead (Physostegia angustifolia(?)) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, May 7, 2023  Young leaf and flower buds of mustang grape at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, April 3, 2022  Salt moth caterpillar on a leaf of giant ragweed at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, April 5, 2020  Leaf of whitestar morning-glory (Ipomoea lacunosa) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 3, 2021  Sagittaria like flowers near Birch Creek Unit of Somerville Lake State Park. Texas, July 19, 2014  Indigofera(?) flowers near Birch Creek Unit of Somerville Lake State Park. Texas, July 19, 2014  Leaf and flowers of spiderwort (Tradescantia) both in natural light and under 365 nm ultraviolet (UV-A) blacklight from Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 15, 2025  Both sides of a leaf of Ipomoea lacunosa with rust fungus Coleosporium ipomoeae at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, September 19, 2021  Close-up of a leaf of Ipomoea lacunosa with rust fungus Coleosporium ipomoeae at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, September 19, 2021  Flowers of a species of Indigofera near Birch Creek Unit of Somerville Lake State Park. Texas, July 19, 2014  Turk s cap (Malvaviscus drummondii) near Birch Creek Unit of Somerville Lake State Park. Texas, July 19, 2014  Slender vervain (verbena) near Birch Creek Unit of Somerville Lake State Park. Texas, July 19, 2014  Passion flower (Passiflora) near Birch Creek Unit of Somerville Lake State Park. Texas, July 19, 2014  Buttonbush (Cephalanthus occidentalis) near Birch Creek Unit of Somerville Lake State Park. Texas, July 19, 2014  Details of orange rust fungus Coleosporium ipomoeae on a leaf of Ipomoea lacunosa at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, September 19, 2021  Texture of orange rust fungus Coleosporium ipomoeae on a leaf of Ipomoea lacunosa at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, September 19, 2021  Orange spots of rust fungus Coleosporium ipomoeae on a leaf of Ipomoea lacunosa at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, September 19, 2021  Pattern of orange rust fungus Coleosporium ipomoeae on a leaf of Ipomoea lacunosa at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, September 19, 2021  Leaf-cutting (sharp-tailed) cuckoo bee Coelioxys (female) taken from bluestem grass at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 29, 2021  Orange spots of rust fungus Coleosporium ipomoeae on underside of a leaf of Ipomoea lacunosa at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, September 19, 2021  A nest of leaf-cutting ants with green and black fruits of evening primrose (Oenothera)(?) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, April 20, 2022  Kleptoparasitic leaf-cutting (sharp-tailed) cuckoo bee Coelioxys, female, on bluestem grass at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 29, 2021  Texture of orange spots of rust fungus Coleosporium ipomoeae on a leaf of Ipomoea lacunosa at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, September 19, 2021  Close-up of orange spots of rust fungus Coleosporium ipomoeae on a leaf of Ipomoea lacunosa at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, September 19, 2021  Tiny Diodia like flower on roadside near Birch Creek Unit of Somerville Lake State Park. Texas, July 19, 2014  Red firewheel flower (Gaillardia amblyodon) near Birch Creek Unit of Somerville Lake State Park. Texas, July 19, 2014  Blooming buttonbush (Cephalanthus occidentalis) near Birch Creek Unit of Somerville Lake State Park. Texas, July 19, 2014  Hooker s eryngo (Eryngium hookeri) near Birch Creek Unit of Somerville Lake State Park. Texas, July 19, 2014  Copper lily (Habranthus texanus) near Birch Creek Unit of Somerville Lake State Park. Texas, July 19, 2014  Fruits of peppervine (Ampelopsis arborea) near Birch Creek Unit of Somerville Lake State Park. Texas, July 19, 2014  Spurge (Euphorbia heterophylla) on roadside near Birch Creek Unit of Somerville Lake State Park. Texas, July 19, 2014  Flower of whitestar morning-glory (Ipomoea lacunosa) and a leaf with rust fungus Coleosporium ipomoeae at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, September 19, 2021  Underside of a leaf of whitestar morning-glory (Ipomoea lacunosa) with rust fungus Coleosporium ipomoeae at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, September 19, 2021  Unripe green and black fruits of evening primrose (Oenothera)(?) collected by leaf-cutting ants at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, April 20, 2022  Fruits of spurge (Euphorbia heterophylla) on roadside near Birch Creek Unit of Somerville Lake State Park. Texas, July 19, 2014  Jew s ear mushroom (Auricularia auricula-judae complex) near Birch Creek Unit of Somerville Lake State Park. Texas, July 19, 2014  Flower of prickly poppy (Argemone albiflora) near Birch Creek Unit of Somerville Lake State Park. Texas, July 19, 2014  Ball rolling dung beetles (Scarabeus) near Birch Creek Unit of Somerville Lake State Park. Texas, July 19, 2014  Green berries of beautyberry (Callicarpa americana) near Birch Creek Unit of Somerville Lake State Park. Texas, July 19, 2014  Flower of Copper lily (Habranthus texanus) near Birch Creek Unit of Somerville Lake State Park. Texas, July 19, 2014  Underside of a leaf of spring scorpion grass (Myosotis macrosperma) with rust fungus Puccinia eatoniae var. myosotidis(?) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 12, 2022  Sand mounds of Texas leaf cutting ants Atta texana at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, December 4, 2020  Whitestar morning-glory (Ipomoea lacunosa) with a flower and a leaf with orange spots from rust fungus Coleosporium ipomoeae at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, September 19, 2021  Rust fungus Puccinia eatoniae var. myosotidis(?) on underside of a leaf of spring scorpion grass (Myosotis macrosperma, Boraginaceae) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, April 3, 2022  Green and white spurge (Euphorbia heterophylla) on roadside near Birch Creek Unit of Somerville Lake State Park. Texas, July 19, 2014  Katydid nymph on prickly poppy (Argemone albiflora) near Birch Creek Unit of Somerville Lake State Park. Texas, July 19, 2014  Close up of a flower of prickly poppy (Argemone albiflora) near Birch Creek Unit of Somerville Lake State Park. Texas, July 19, 2014  Katydid nymph on a petal of prickly poppy (Argemone albiflora) near Birch Creek Unit of Somerville Lake State Park. Texas, July 19, 2014  Leaf cutting ant s highway on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, October 12, 2022  Purple clematis (leatherflower, Clematis pitcheri) near Birch Creek Unit of Somerville Lake State Park. Texas, July 19, 2014  Dung beetles (Scarabeus) on dung like substrate near Birch Creek Unit of Somerville Lake State Park. Texas, July 19, 2014  Buttonbush on Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, July 12, 2026  Leaf of watershield (Brasenia schreberi)? on a sandy shore near Birch Creek Unit of Somerville Lake State Park. Texas, April 19, 2026  Dayflower (Commelina) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, July 14, 2019  Grasshopper ona plant at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, July 30, 2021  Ruellia flower at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, July 30, 2021  Dayflower (Commelina) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, July 30, 2021  Antlion pit traps at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, July 31, 2022  Dry seeds of mallow(?) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, July 19, 2020  Dead oak skeleton at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, July 31, 2022  Vervain (Verbena) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, July 14, 2019  Drying vegetation at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, July 31, 2022  Shells on dry bottom of Somerville Lake in Birch Creek Unit of Somerville Lake State Park, July 14, 2013  Rattlebush growing on dry bottom of Somerville Lake in Birch Creek Unit of Somerville Lake State Park, July 14, 2013  Skeleton of alligator gar on dry bottom of Somerville Lake in Birch Creek Unit of Somerville Lake State Park, July 14, 2013  Petrified wood on dry bottom of Somerville Lake in Birch Creek Unit of Somerville Lake State Park, July 14, 2013  Tree root on dry bottom of Somerville Lake in Birch Creek Unit of Somerville Lake State Park, July 14, 2013  Turnsole (Heliotropium indicum) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, July 14, 2019  Path with dried grass at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, July 31, 2022  Buttonbush (Cephalanthus occidentalis) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, July 19, 2020  Scorched bush of beautyberry at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, July 31, 2022  Dodder (Cuscuta) on eryngo at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, July 19, 2020  Drying leaves of elm on the ground at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, July 31, 2022  Slender vervain (verbena) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, July 30, 2021  Horseweed (Conyza canadensis) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, July 19, 2020  Dried leaves of box elder(?) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, July 31, 2022  Tickseed sunflower (Bidens) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, July 14, 2019  Dry curled leaves of beautyberry at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, July 31, 2022  Shoot of sumpweed (Iva annua) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, July 19, 2020  Buttonbush (Cephalanthus occidentalis) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, July 30, 2021  Various dry brown leaves on the ground at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, July 31, 2022  Dried leaves of post oak on the ground at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, July 31, 2022  Morning glory (Ipomoea cordatotriloba) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, July 30, 2021 |