Download Tree of Life: Aquatic Collembola Species and Their Characteristics - Prof. John Abbott and more Study notes Entomology in PDF only on Docsity! Tree of Life
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University of Arizona
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Approximate #’s of Aquatic Species Order Number of Aquatic Species Total Number Species Collembola Ephemeroptera Odonata Plecoptera Hemiptera Megaloptera Neuroptera Coleoptera Trichoptera Lepidoptera Diptera Hymenoptera 50* (8%) 711 (100%) 435 (100%) 537 (100%) 400* (11%) 50 (100%) 6 (2%) 1,000* (4.3%) 1,261 (100%) 50 (0.4%) 3,500* (19%) 64* (0.3%) 677 711 435 537 3,587 50 300 23,701 1,261 11,286 18,200 17,200 *Includes semiaquatic species. Incomplete Metamorphosis (Hemi/Paurometabolous) • Distinguishing Characteristics of Larvae – 3 readily distinguished body segments – 1 pair of compound eyes – 1 pair of antennae – Most with 2 pair of developing wings – 3 pair of segmented legs Complete Metamorphosis (Holemetabolous) • Distinguishing Characteristics of Larvae – 3 body segments often indistinguishable – Simple eyes (stemmata) – 1 pair of small/indistinguishable antennae – No evidence of developing wings – 3 pair of segmented legs often absent – Short, fleshy appendages may be present on abdomen Collembola Common Name Springtail Derivation coll, glue; embola, bolt Size minute, 0.25-6 mm Development Ametabolous Distribution World Wide No. of families 7 North America No. of Species 677 N.A.; 6,000 WW HEXAPODA
Pterygota
Neoptera
Polyneoptera
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Thysanura s. lato
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Phasmatodea
Paraneoptera
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Endopterygota
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Embiidina
Orthoptera
Dermaptera
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Sto Phthiraptera
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SSP Neuroptera
Megaloptera
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Non-Insect Hexapods • Sometimes each Order given Class status • Entognathous mouthparts • Muscle articulation to each antennomere Aquatic Collembola • 50 species/29 genera • most common species, Podura aquatica • Neustonic Forms 1° Aquatic Associates – found exclusively in aquatic habitats 2° Aquatic Associates – found in & around aquatic habitats, – also moist areas of high humidity 3° Aquatic Associates – found in rain or temporary pools Poduridae: Podura aquatica Collembola Assortment Poduridae Hypogastruidae Onychiuridae Entomobryidae Isotomidae Entomobryidae Neelidae Sminthuridae
