The weather was again extremely hot and sunny as a team of fifteen conducted this week's survey. Pit vipers, along with pythons and boas, can sense infrared thermal radiation. The facial pit opening is visible between the nostril and eye of the rattlesnake shown below. Long known to help locate prey, there is now evidence this organ might also assist in thermoregulation and predator detection. Select Photos and Complete List of Sightings: Danaus gilippus (queens) photo by Harriett Wolf Papilio polyxenes (black swallowtail) photo by Michael Knox Phoebis sennae (cloudless sulphur & exuviae) photo by Julia Kenny Callophrys gryneus (juniper hairstreak wing detail) photo by Julie Shaw Camponotus texanus & Hemiargus isola (carpenter ant & Reakirt's blue larva) photo by Mika Geiger Hedriodiscus trivittatus (soldier fly) photo by Katherine Daniels Palpada vinetorum (flower fly) photo by Julie Shaw Neodiplocampta miranda (bee fly) photo by Katherine Daniels Phidippus cardinalis (cardinal jumper) photo by Mika Geiger Mecaphesa sp. & Agraulis vanillae (crab spider eating gulf fritillary) photo by Vince VanderHeijden Rabidosa rabida & Ululodes macleayanus (rabid wolf spider eating owlfly) photo by Val Bugh Cosmopepla lintneriana (stink bug) photo by Linda Crabtree Pseudatomoscelis seriatus (cotton flea hopper) photo by Linda Crabtree Lepisosteus oculatus (spotted gar) photo by George Ward Crotalus atrox (western diamondback rattlesnake) photo by Beth Kirkhart Archilochus alexandri (black-chinned hummingbird) photo by George Ward Erythemis vesiculosa (great pondhawk) photo by Katherine Daniels Orchelimum silvaticum (long-spurred meadow katydid) photo by Vince VanderHeijden Polistes rubiginosus & Unknown sp. (red wasp with twisted-wing parasites) photo by Julie Shaw Oligotoma sp. (webspinner) photo by Val Bugh Birds: American Crow (Corvus brachyrhynchos) American Robin (Turdus migratorius) Barn Swallow (Hirundo rustica) Bewick's Wren (Thryomanes bewickii) Black Vulture (Coragyps atratu) Black-bellied Whistling-duck (Dendrocygna autumnalis) Black-chinned Hummingbird (Archilochus alexandri) Black-crested Titmouse (Baeolophus atricristatus) Blue Grosbeak (Passerina caerulea) Blue Jay (Cyanocitta cristata) Blue-gray Gnatcatcher (Polioptila caerulea) Brown-headed Cowbird (Molothrus ater) Carolina Chickadee (Poecile carolinensis) Carolina Wren (Thryothorus ludovicianus) Chimney Swift (Chaetura pelagica) Common Nighthawk (Chordeiles minor) Dickcissel (Spiza americana) Eastern Bluebird (Sialia sialis) Eastern Phoebe (Sayornis phoebe) Eastern Wood-pewee (Contopus virens) Field Sparrow (Spizella pusilla) Great Crested Flycatcher (Myiarchus crinitus) Great-tailed Grackle (Quiscalus mexicanus) House Finch (Haemorhous mexicanus) House Sparrow (Passer domesticus) Indigo Bunting (Passerina cyanea) Killdeer (Charadrius vociferus) Ladder-backed Woodpecker (Dryobates scalaris) Least Flycatcher (Empidonax minimus) Lesser Goldfinch (Spinus psaltria) Mourning Dove (Zenaida macroura) Northern Cardinal (Cardinalis cardinalis) Northern Mockingbird (Mimus polyglottos) Painted Bunting (Passerina ciris) Purple Martin (Progne subis) Red-bellied Woodpecker (Melanerpes carolinus) Red-shouldered Hawk (Buteo lineatus) Red-tailed Hawk (Buteo jamaicensis) Red-winged Blackbird (Agelaius phoeniceus) Summer Tanager (Piranga rubra) Turkey Vulture (Cathartes aura) Western Kingbird (Tyrannus verticalis) White-eyed Vireo (Vireo griseus) White-winged Dove (Zenaida asiatica) Yellow-billed Cuckoo (Coccyzus americanus) Mammals: White-tailed Deer (Odocoileus virginianus) Eastern Cottontail (Sylvilagus floridanus), fresh scat Eastern Fox Squirrel (Sciurus niger) Common Gray Fox (Urocyon cinereoargenteus), fresh scat Coyote (Canis latrans), fresh scat Northern Raccoon (Procyon lotor), fresh scat Reptiles, Amphibians & Fish: Western Diamondback Rattlesnake (Crotalus atrox) Redstripe Ribbon Snake (Thamnophis proximus rubrilineatus) Rough Green Snake (Opheodrys aestivus) Texas Spotted Whiptail (Aspidoscelis gularis gularis) Texas Spiny Lizard (Sceloporus olivaceus) Green Anole (Anolis carolinensis) Gulf Coast Toad (Incilius nebulifer), tadpoles Mosquitofish (Gambusia affinis) Rio Grande Cichlid (Herichthys cyanoguttatus) Spotted Gar (Lepisosteus oculatus) Misc.: Pillbug (Armadillidium vulgare) Slender Springtail (Seira sp.) Striped Bark Scorpion (Centruroides vittatus) Mite (Leptus sp.), on scorpion Polygyrid Land Snail (Unknown sp.) Insects & Spiders: order family genus/species common name lepidoptera   nymphalidae   Danaus gilippus   Queen       Agraulis vanillae   Gulf Fritillary (adult & pupa)       Euptoieta claudia   Variegated Fritillary       Junonia coenia   Common Buckeye       Asterocampa celtis   Hackberry Emperor       Asterocampa clyton   Tawny Emperor       Chlosyne lacinia   Bordered Patch    pieridae   Eurema nicippe   Sleepy Orange       Eurema lisa   Little Yellow       Phoebis sennae   Cloudless Sulphur    papilionidae   Papilio cresphontes   Giant Swallowtail       Papilio polyxenes   Black Swallowtail    lycaenidae   Hemiargus isola   Reakirt's Blue (adult & larva)       Hemiargus ceraunus   Ceraunus Blue       Strymon melinus   Gray Hairstreak       Callophrys gryneus   Juniper Hairstreak    hesperiidae   Burnsius philetas   Desert Checkered-skipper       Burnsius communis/albescens   Common/White Checkered-skipper       Erynnis horatius   Horace's Duskywing       Lerodea eufala   Eufala Skipper       Hylephila phyleus   Fiery Skipper       Amblyscirtes celia   Celia's Roadside-skipper    noctuidae   Galgula partita   The Wedgling       Tarache quadriplaga   Bird Dropping Moth       Tarache aprica   Exposed Bird Dropping Moth       Ponometia candefacta   Olive-shaded Bird Dropping Moth       Ponometia phecolisca   Bird Dropping Moth       Marimatha nigrofimbria   Black-bordered Lemon Moth       Amyna stricta   Eight-spot Moth       Tripudia quadrifera   Moth       Spodoptera ornithogalli   Yellow-striped Armyworm Moth       Spodoptera frugiperda   Fall Armyworm Moth       Spodoptera exigua   Beet Armyworm Moth       Micrathetis triplex   Triplex Cutworm Moth       Catabenoides terminellus   Moth       Anicla infecta   Green Cutworm Moth       Lacinipolia erecta   Moth       Xerociris wilsonii   Wilson's Wood-nymph    erebidae   Melipotis indomita   Moth       Melipotis jucunda   Merry Melipotis       Phytometra orgiae   Moth       Aon noctuiformis   Moth    arctiidae   Cisthene tenuifascia   Thin-banded Lichen Moth       Hypoprepia fucosa   Painted Lichen Moth       Pygarctia lorula   Tiger Moth    notodontidae   Hyparpax aurostriata   Prominent    sphingidae   Hemaris diffinis   Snowberry Clearwing (adult & larva)    geometridae   Digrammia pallidata   Moth       Digrammia atrofasciata   Moth       Psamatodes abydata   Dot-lined Angle       Tornos scolopacinaria   Dimorphic Gray       Euacidalia sp.   Moth       Glena quinquelinearia   Five-lined Glena       Synchlora frondaria   Southern Emerald (adult & larva)       Euchlaena marginaria   Ochre Euchlaena       Pimaphera sparsaria   Moth       Iridopsis defectaria   Brown-shaded Gray Moth       Glenoides texanaria   Texas Gray Moth    limacodidae   Apoda rectilinea   Slug Moth    crambidae   Urola nivalis   Snowy Urola       Pyrausta laticlavia   Southern Purple Mint Moth       Pyrausta pseuderosnealis   Pyrausta Moth       Microtheoris vibicalis   Whip-marked Snout Moth       Ommatospila narcaeusalis   Moth       Lipocosma polingi   Moth    pyralidae   Peoria bipartitella   Grass-veneer Moth       Anderida peorinella   Grass-veneer Moth       Homoeosoma electella   Sunflower Moth (adult & larva)       Eurythmia angulella   Moth       Amyelois transitella   Navel Orangeworm Moth       Zamagiria australella   Moth    tortricidae   Pelochrista salaciana   Leafroller Moth       Cydia latiferreana   Filbertworm Moth       Crocidosema plebejana   Cotton Tipworm Moth       Paralobesia viteana   Grape Berry Moth       Sparganothis demissana   Moth       Platphalonidia magdalenae   Moth    gelechiidae   Isophrictis similiella   Moth       Anacampsis paltodoriella   Moth       Polyhymno luteostrigella   Moth       Coleotechnites sp.   Moth       Sophronia roseicrinella   Moth       Gnorimoschema saphirinella   Moth    blastobasidae   Blastobasis glandulella   Acorn Moth       Hypatopa punctiferella   Moth       Unknown sp.   Moth    autostichidae   Glyphidocera lactiflosella   Five-spotted Glyphidocera    pterophoridae   Adaina simplicius   Three-dotted Plume Moth       Pselnophorus belfragei   Plume Moth    scythrididae   Scythris trivinctella   Moth    heliodinidae   Aetole tripunctella   Moth    cosmopterigidae   Melanocinclis lineigera   Moth       Siskiwitia sp.   Moth    bucculatricidae   Bucculatrix sp.   Ribbed Cocoon-maker Moth    nepticulidae   Stigmella apicialbella   Pygmy Moth       Stigmella plumosetaeella   Pygmy Moth coleoptera   chrysomelidae   Asphaera lustrans   Flea Beetle       Altica sp.   Flea Beetle       Syphrea nana   Flea Beetle       Glyphuroplata pluto   Leaf Beetle    coccinellidae   Cycloneda sanguinea   Red Lady Beetle       Exochomus childreni   Lady Beetle       Olla v-nigrum   Ashy Gray Lady Beetle    tenebrionidae   Eleodes goryi   Desert Stink Beetle       Eleodes fusiformis   Desert Stink Beetle    hydrophilidae   Berosus sp.   Water Scavenger Beetle       Enochrus sp.   Water Scavenger Beetle       Hydrochus sp.   Water Scavenger Beetle    carabidae   Bembidion impotens   Ground Beetle    staphylinidae   Carpelimus sp.   Rove Beetle    bostrichidae   Xylobiops sp.   Powder-post Beetle       Dendrobiella sericans   Powder-post Beetle    nitidulidae   Stelidota coenosa   Sap Beetle    elateridae   Diplostethus texanus   Click Beetle       Melanotus sp.   Click Beetle hemiptera   coreidae   Acanthocephala terminalis   Coreid Bug       Leptoglossus phyllopus   Easter Leaf-footed Bug (adult & nymph)       Chelinidea vittiger   Opuntia Bug (adult & nymph)       Narnia femorata   Cactus Bug       Hypselonotus punctiventris   Coreid Bug       Chariesterus antennator   Euphorbia Bug    largidae   Largus sp.   Largus Bug    lygaeidae   Oncopeltus fasciatus   Large Milkweed Bug    rhyparochromidae   Neopamera bilobata   Seed Bug    rhopalidae   Niesthrea louisianica   Scentless Plant Bug    berytidae   Jalysus wickhami   Stilt Bug    miridae   Keltonia tuckeri   Plant Bug       Reuteroscopus ornatus   Plant Bug       Ceratocapsus apicalis   Plant Bug       Pseudatomoscelis seriatus   Cotton Flea Hopper    reduviidae   Zelus renardii   Assassin Bug       Apiomerus spissipes   Bee Assassin    scutelleridae   Diolcus chrysorrhoeus   Shield Bug    pentatomidae   Banasa euchlora   Stink Bug       Chinavia hilaris   Green Stink Bug (nymph)       Euschistus servus   Brown Stink Bug       Euschistus obscurus   Stink Bug       Thyanta custator   Stink Bug       Mecidea major   Grass Stink Bug       Cosmopepla lintneriana   Stink Bug       Brochymena cariosa   Rough Stink Bug homoptera   cicadellidae   Paraphlepsius sp.   Leafhopper       Excultanus excultus   Leafhopper       Illinigina illinoiensis   Leafhopper       Xerophloea viridis   Leafhopper       Norvellina helenae   Leafhopper       Erasmoneura vulnerata   Leafhopper       Homalodisca vitripennis   Glassy-winged Sharpshooter (adult & nymph)       Oncometopia orbona   Leafhopper       Osbornellus clarus   Leafhopper       Balclutha sp.   Leafhopper       Atanus sp.   Leafhopper       Cetexa sp.   Leafhopper       Daltonia sp.   Leafhopper       Chlorotettix sp.   Leafhopper       Empoasca sp.   Leafhopper       Eratoneura sp.   Leafhopper       Eutettix sp.   Leafhopper       Graminella nigrifrons   Leafhopper       Graminella sonorus   Leafhopper       Scaphoideus sp.   Leafhopper       Texananus sp.   Leafhopper       Xestocephalus brunneus   Leafhopper       Xestocephalus superbus   Leafhopper       Polyamia sp.   Leafhopper    cixiidae   Melanoliarus sp.   Planthopper    delphacidae   Tagosodes orizicolus   Rice Delphacid       Sogatella kolophon   Planthopper       Pissonotus sp.   Planthopper    membracidae   Tortistilus abnorma   Treehopper    cicadidae   Hadoa texana   Cicada       Neotibicen superbus   Superb Cicada    aphididae   Tinocallis sp.   Aphid    dactylopiidae   Dactylopius sp.   Cochineal Insect hymenoptera   apidae   Apis mellifera   Honey Bee       Bombus sonorus   Sonoran Bumble Bee       Bombus pensylvanicus   American Bumble Bee       Centris atripes   Digger Bee       Exomalopsis sp.   Digger Bee       Xylocopa micans   Southern Carpenter Bee       Xylocopa virginica   Eastern Carpenter Bee    halictidae   Augochloropsis metallica   Green Sweat Bee       Lasioglossum sp.   Sweat Bee       Unknown sp.   Green Sweat Bee    megachilidae   Heriades sp.   Resin Bee       Dianthidium sp.   Resin Bee       Megachile exilis   Slender Resin Bee       Megachile sp.   Leafcutter Bee    vespidae   Polistes rubiginosus   Red Wasp       Polistes metricus   Paper Wasp       Polistes exclamans   Paper Wasp       Polistes dorsalis   Paper Wasp       Polistes bellicosus   Paper Wasp       Vespula squamosa   Southern Yellowjacket    sphecidae   Chlorion cyaneum   Cockroach Hunter    pompilidae   Pepsis sp.   Tarantula-hawk Wasp    formicidae   Leptogenys elongata   Ant       Camponotus texanus   Carpenter Ant       Camponotus festinatus   Carpenter Ant       Camponotus decipiens   Carpenter Ant       Solenopsis sp.   Fire Ant       Pheidole sp.   Big-headed Ant       Brachymyrmex patagonicus   Rover Ant       Unknown sp.   Ant    braconidae   Unknown sp.   Braconid Wasp    ichneumonidae   Unknown sp.   Ichneumon diptera   syrphidae   Palpada vinetorum   Flower Fly    bombyliidae   Poecilanthrax lucifer   Bee Fly       Neodiplocampta miranda   Bee Fly    stratiomyidae   Hedriodiscus trivittatus   Soldier Fly    asilidae   Efferia sp.   Robber Fly       Atomosia melanopogon   Robber Fly    sarcophagidae   Sphenometopa sp.   Satellite Fly    tachinidae   Peleteria sp.   Tachinid Fly       Phasia sp.   Tachinid Fly       Archytas sp.   Tachinid Fly       Trichopoda lanipes   Feather-legged Fly    lauxaniidae   Neodeceia sp.   Lauxaniid Fly    dolichopodidae   Condylostylus sp.   Long-legged Fly    chironomidae   Unknown sp.   Midge    culicidae   Aedes albopictus   Asian Tiger Mosquito       Culex sp.   Mosquito    cecidomyiidae   Unknown sp.   Gall Midge odonata   coenagrionidae   Argia funebris   Springwater Dancer       Telebasis salva   Desert Firetail       Ischnura ramburii   Rambur's Forktail       Ishnura posita   Fragile Forktail    aeshnidae   Anax junius   Common Green Darner    libellulidae   Pachydiplax longipennis   Blue Dasher       Libellula croceipennis   Neon Skimmer       Dythemis fugax   Checkered Setwing       Orthemis ferruginea   Roseate Skimmer       Erythemis vesiculosa   Great Pondhawk       Erythemis simplicicollis   Eastern Pondhawk       Plathemis lydia   Common Whitetail       Tramea lacerata   Black Saddlebags       Tramea onusta   Red Saddlebags       Pantala flavescens   Wandering Glider orthoptera   acrididae   Melanoplus differentialis   Differential Grasshopper (adult & nymph)       Melanoplus ponderosus   Ponderous Grasshopper       Melanoplus plebejus   Plebeian Grasshopper       Melanoplus discolor   Contrasting Spurthroat Grasshopper       Melanoplus femurrubrum   Red-legged Grasshopper       Melanoplus sanguinipes   Migratory Grasshopper       Aidemona azteca   Aztec Spurthroat (nymph)       Hesperotettix speciosus   Showy Grasshopper       Schistocerca lineata   Spotted Bird Grasshopper       Schistocerca obscura   Obscure Bird Grasshopper       Schistocerca americana   American Bird Grasshopper       Mermiria bivittata   Two-striped Mermiria       Syrbula admirabilis   Handsome Grasshopper (nymph)       Boopedon gracile   Graceful Range Grasshopper       Lactista azteca   Aztec Bandwing       Chortophaga viridifasciata   Northern Green-striped Grasshopper       Hippiscus ocelote   Wrinkled Grasshopper (adult & nymph)       Arphia simplex   Plains Yellow-winged Grasshopper (adult & nymph)    tettigoniidae   Scudderia furcata   Fork-tailed Bush Katydid (nymph)       Orchelimum silvaticum   Long-spurred Meadow Katydid       Conocephalus strictus   Straight-lanced Meadow Katydid (nymph)       Pediodectes bruneri   Bruner Shieldback    tetrigidae   Paratettix mexicanus   Pygmy Grasshopper mantodea   mantidae   Stagmomantis carolina   Carolina Mantis (adult & nymph) isoptera   rhinotermitidae   Reticulitermes sp.   Subterranean Termite neuroptera   chrysopidae   Unknown sp.   Green Lacewing (adult & eggs)    hemerobiidae   Sympherobius barberi   Brown Lacewing    myrmeleontidae   Peruveleon dorsalis   Antlion       Myrmeleon sp.   Antlion (larva)    ascalaphidae   Ululodes macleayanus   Owlfly    coniopterygidae   Unknown sp.   Dustywing trichoptera   leptoceridae   Triaenodes sp.   Long-horned Caddisfly    hydropsychidae   Potamyia flava   Netspinning Caddisfly embioptera   oligotomidae   Oligotoma sp.   Webspinner strepsiptera   stylopidae   Unknown sp.   Twisted-wing Parasite araneae   salticidae   Phidippus audax   Bold Jumper       Phidippus cardinalis   Cardinal Jumper       Anasaitis canosa   Jumping Spider    araneidae   Argiope aurantia   Black and Yellow Garden Spider    tetragnathidae   Tetragnatha laboriosa   Silver Longjawed Orbweaver    oxyopidae   Peucetia viridans   Green Lynx    thomisidae   Mecaphesa sp.   Crab Spider    dictynidae   Dictyna sp.   Meshweb Weaver    pisauridae   Dolomedes triton   Fishing Spider       Pisaurina mira   Nursery Web Spider    lycosidae   Rabidosa rabida   Rabid Wolf Spider