| Aircraft Index | 01/30/2013 |
| Arborvitae: Genus Thuja | 03/03/2013 |
| Bed Bugs in U.S. Resurgence | 04/28/2013 |
| Bees, Wasps and Ants of North America - Order Hymenoptera | 04/19/2013 |
| Bees, Wasps and Ants of North America Index | 04/19/2013 |
| Beetles of North America - Order Coleoptera | 05/03/2013 |
| Beetles of North America Index | 04/19/2013 |
| Bugs of North America - Order Hemiptera | 03/03/2013 |
| Bugs of North America Index | 04/28/2013 |
| Butterflies of North America | 04/22/2013 |
| Butterflies of North America - Index | 04/25/2013 |
| Chicago Illinois - The Windy City | 04/28/2013 |
| Classes Diplopoda (Millipedes) and Chilopoda (Centipedes) | 04/28/2013 |
| Common Woodlouse, Sow Bug, Pillbug | 04/19/2013 |
| Copyright Information - Red Planet Incorporated | 02/22/2013 |
| Crabapples for Home Landscape | 02/12/2013 |
| Crickets, Grasshoppers & Katydids Index | 03/15/2013 |
| Damselflies of North America | 04/28/2013 |
| Dragonflies and Damselflies Index - Order Odonata | 04/30/2013 |
| Dragonflies of North America | 04/30/2013 |
| Families Rutaceae and Cercidiphyllum | 02/23/2013 |
| Family Aceraceae - Maples | 02/28/2013 |
| Family Adoxaceae - Viburnums and Allies | 01/22/2013 |
| Family Anacardiaceae - Cashew or Sumac Family | 02/28/2013 |
| Family Aquifoliaceae – Holly & Winterberry | 03/02/2013 |
| Family Araliaceae - Ivy and Ginseng Family | 01/31/2013 |
| Family Betulaceae - Alder, Birch & Hornbeam | 02/28/2013 |
| Family Bombyliidae - Bee Flies | 05/03/2013 |
| Family Celastraceae - Bittersweets, Spindle Trees | 02/22/2013 |
| Family Cerambycidae - Longhorned Beetles | 04/16/2013 |
| Family Cornaceae - Dogwoods | 01/31/2013 |
| Family Cupressaceae - Redwood, Cypress, Arborvitae, Juniper | 02/19/2013 |
| Family Fabaceae - Legumes | 01/07/2013 |
| Family Fabaceae Index | 01/07/2013 |
| Family Fagaceae - Beech, Chinkapin and Oak | 01/22/2013 |
| Family Fagaceae Index - Beech, Chinkapin and Oak | 02/28/2013 |
| Family Hamamelidaceae: Witch Hazel, Gum Trees | 01/31/2013 |
| Family Hippocastanaceae - Horse-Chestnuts & Buckeyes | 02/28/2013 |
| Family Juglandaceae - Nut Trees; Walnut, Hickory, Butternut, Pecan | 02/28/2013 |
| Family Lycaenidae - Blues, Coppers, Hairstreaks & Harvesters | 04/25/2013 |
| Family Magnoliaceae - Magnolias | 01/18/2013 |
| Family Magnoliaceae Index | 02/28/2013 |
| Family Meloidae - Blister Beetles | 04/16/2013 |
| Family Moraceae - Mulberries and Figs | 02/28/2013 |
| Family Nymphalidae - Brush-Footed Butterflies | 04/26/2013 |
| Family Oleaceae - Olive Family | 02/28/2013 |
| Family Papilionidae - Swallowtail and Parnassian Butterflies | 04/25/2013 |
| Family Pieridae - White, Sulphur, and Yellow Butterflies | 04/25/2013 |
| Family Pinaceae Index | 01/31/2013 |
| Family Pinaceae: The Pines, Cedars, Spruce, and Firs | 01/06/2013 |
| Family Rosaceae - Fruit Trees | 02/12/2013 |
| Family Rosaceae Index | 02/12/2013 |
| Family Salicaceae - Willow, Poplar and Aspen | 02/21/2013 |
| Family Scarabidae - Scarab Beetles | 04/16/2013 |
| Family Syrphidae: Hover Flies, Flower Flies | 03/24/2013 |
| Family Tachinidae - Tachinid Flies | 03/24/2013 |
| Family Taxaceae - Yews | 02/28/2013 |
| Family Tiliaceae - Basswood, Linden, Lime | 01/15/2013 |
| Family Ulmaceae - Zelkovas, Hackberries and Elms | 01/31/2013 |
| Family Ulmaceae Index | 02/05/2013 |
| Flies of North America - Order Diptera | 05/01/2013 |
| Flies of North America - Orphan Species | 05/01/2013 |
| Flies of North America Index | 05/16/2013 |
| Flowering Plants | 05/14/2013 |
| Flowering Plants Index | 05/16/2013 |
| Fungi, Mushrooms, Puffballs, Truffles, Morels and More | 03/21/2013 |
| Garden Slugs - Taxonomy, Anatomy, and Control | 02/06/2013 |
| Hackberry Psyllid - Pachysylla sp. | 02/12/2013 |
| Jumping Spiders - Family Salticidae | 02/01/2013 |
| Kingdom Fungi Index | 03/21/2013 |
| Moths of North America - Index | 03/17/2013 |
| Moths of North America - Order Lepidoptera | 02/13/2013 |
| North American Insects and Spiders / Tree Encyclopedia | 05/03/2013 |
| North American Insects and Spiders Index | 05/16/2013 |
| Order Ephemeroptera - Mayflies | 05/14/2013 |
| Order Isopoda - Pillbug - Armadillidium vulgare | 04/19/2013 |
| Order Mecoptera - Scorpionflies | 04/19/2013 |
| Order Odonata - Dragonflies and Damselflies | 04/28/2013 |
| Order Orthoptera - Crickets, Grasshoppers & Katydids | 03/13/2013 |
| Ordovician Fossils in Ogle County, Illinois | 03/14/2013 |
| Orphan Pages | 05/16/2013 |
| Orphan Tree Species | 03/02/2013 |
| Praying Mantis - Tenodera aridifolia sinensis | 04/22/2013 |
| Rock Bristletail - Family Meinertellidae | 04/22/2013 |
| Skipper Butterflies of North America | 03/12/2013 |
| Spiders of North America | 03/11/2013 |
| Spiders of North America Index | 03/21/2013 |
| Steve Goodman at Harry Hope's in Cary, Illinois | 04/05/2012 |
| Stone Centipede - Order Lithobiomorpha | 04/28/2013 |
| Subfamily Arctiinae - Tiger and Lichen Moths | 03/11/2013 |
| Suborder Auchenorrhyncha - Cicadas, Hoppers and Aphids | 02/12/2013 |
| Suborder Sternorrhyncha - Aphids, scales, mealybugs, and jumping plant lice | 03/11/2013 |
| Superfamily Pyraloidea - Pyralid and Snout Moths | 03/15/2013 |
| Symphyta - Sawflies, Horntails, and Wood Wasps | 04/19/2013 |
| Tree Encyclopedia | 03/11/2013 |
| Tree Encyclopedia Index | 03/21/2013 |
| Weevils - Family Curculionidae | 04/16/2013 |