{"product_id":"fossil-water-strider-family-gerridae-100-natural-green-river-formation-2","title":"Fossil Water Strider | Family Gerridae | 100% Natural | Green River Formation","description":"\u003cp style=\"text-align: center;\"\u003e\u003cstrong\u003eFamily Gerridae (Water Striders)\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eEocene (51.98 Million Years Ago)\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003ePrivate Quarry, Green River Formation, Wyoming, USA\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003ePreparation by Jim Tynsky\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eSpecimen approx. size: 1.25\" x 1.5\"\u003c\/p\u003e\n\u003cp\u003eMatrix approx. size: 5\" x 4\"\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFamily Gerridae (Water Striders)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eCommonly known as water striders, Gerridae are a family of semi-aquatic insects in the order Hemiptera (true bugs). They are best known for their ability to walk and glide across the surface of water, a skill made possible by specialized physical adaptations.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGeneral Description\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWater striders have elongated, slender bodies and long, delicate legs. Their middle and hind legs are greatly elongated and used for rowing and steering, while the shorter front legs are adapted for grasping prey. Adults typically range from 2 to 12 mm in length, depending on the species.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSurface-Walking Adaptations\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eTheir legs are covered with dense, microscopic hydrophobic hairs that trap air and repel water. This creates enough surface tension to support their weight, allowing them to remain on the water surface without breaking it. The legs also distribute body mass efficiently, preventing sinking.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHabitat\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWater striders inhabit freshwater environments worldwide, including ponds, lakes, slow-moving streams, marshes, and calm river margins. Some species occur in brackish water, and a few even live on the open ocean surface (Halobates).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeeding and Behavior\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWater striders are predatory, feeding on insects and small invertebrates, like mosquitoes (especially larvae), flies, gnats, and spiders that fall onto the water surface. They detect prey through surface vibrations and capture it using their forelegs. They pierce their prey with their needle-like mouthparts (proboscis), inject salivary enzymes that break down the prey's insides, and then suck out the liquefied nutrients. Water striders prefer living prey but will scavenge matter that falls onto the water surface. In times of necessity, they may also engage in cannibalism.\u003c\/p\u003e\n\u003cp\u003eThey are strong skaters and can quickly dart away from predators. Many species are territorial, especially males, and display courtship behaviors involving surface tapping and vibration signals.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWings and Life Cycle\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSpecies may be winged or wingless, with wing development often influenced by environmental conditions such as habitat stability. Water striders undergo incomplete metamorphosis, progressing from egg to nymph to adult. Nymphs resemble smaller, wingless adults.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eEcological Role\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eGerridae play an important role in aquatic ecosystems by controlling insect populations and serving as prey for fish, amphibians, and birds.\u003c\/p\u003e","brand":"In Stone Fossils","offers":[{"title":"Default Title","offer_id":48405404778718,"sku":"WTRSTRD3*JT*","price":75.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0466\/5117\/9163\/files\/rn-image_picker_lib_temp_865d26ba-6d42-46e6-9dc7-3711c67b52ae.jpg?v=1783635212","url":"https:\/\/instonefossils.com\/products\/fossil-water-strider-family-gerridae-100-natural-green-river-formation-2","provider":"In Stone Fossils ","version":"1.0","type":"link"}