What is "terrestris"

Terrestris, terrestrial in Latin, is a species name present in a number of species Latin names:

• Actinochloris terrestris, an alga species
• Arvicola terrestris, the European Water Vole, a mammal species
• Blepharospora terrestris, a plant pathogen species
• Bombus terrestris, a bumblebee species
• Brodiaea terrestris, a plant species
• Bufo terrestris, a toad species
• Callitriche terrestris, a plant species
• Chiropterotriton terrestris, a salamander species
• Clubiona terrestris, a sac spider species found in Europe
• Coelotes terrestris, a tangled nest spider species in the genus Coelotes
• Ettlia terrestris, an algae species
• Euophrys terrestris, a jumping spider species
• Euptychia terrestris, a butterfly species in the genus Euptychia
• Gymnopilus terrestris, a species of mushroom in the Cortinariaceae family
• Lumbricus terrestris, a worm species
• Lycosa terrestris, a spider species in the genus Lycosa
• Lysimachia terrestris, a plant species
• Moggridgea terrestris, a spider species
• Muriella terrestris, an alga species in the genus Muriella
• Mycoleptodiscus terrestris, a plant pathogen species
• Nayalia terrestris, an alga species
• Neochloris terrestris, an alga species
• Notosuchus terrestris, an extinct crocodile species
• Oreophryne terrestris, a species of frog in the Microhylidae family endemic to Papua New Guinea
• Pedilochilus terrestris, an orchid species in the genus Pedilochilus
• Phaeotrichoconis terrestris, a plant pathogen species
• Phyllastrephus terrestris, a songbird species
• Phytophthora terrestris, a water mould species
• Pseudotetracystis terrestris, an alga species in the genus Pseudotetracystis
• Pyrenochaeta terrestris, a fungal plant pathogen species
• Scotiellopsis terrestris, an alga species
• Skvortzoviothrix terrestris, an alga species
• Tapirus terrestris, a mammal species
• Testudo terrestris, a tortoise species in the genus Testudo
• Tribulus terrestris, a plant species
• Trox terrestris, a beetle species
• Trugon terrestris, a bird species
• Warcupia terrestris, a species of fungi, the sole species in the genus Warcupia
• Zizania terrestris, a wild rice species
• Zoothera terrestris, an extinct bird species