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TRANSLATION FROM: Title: Rios de Bizkaia ( Bizkaia rivers)

KEYS OF MACROINVERTEBRATES AT A FAMILY LEVEL Statiri X. & Lazaridou M. Lab. Of Zoology/School of Biology/A.U.Th. TRANSLATION FROM: Title: Rios de Bizkaia ( Bizkaia rivers) Edited by: Instituto de Estudios Territoriales de Bizkaia Authors: Enma Orive, Ana Rallo

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TRANSLATION FROM: Title: Rios de Bizkaia ( Bizkaia rivers)

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  1. KEYS OF MACROINVERTEBRATES AT A FAMILY LEVELStatiri X. & Lazaridou M.Lab. Of Zoology/School of Biology/A.U.Th. TRANSLATION FROM: • Title: Rios de Bizkaia ( Bizkaia rivers) • Edited by: Instituto de Estudios Territoriales de Bizkaia • Authors: Enma Orive, Ana Rallo • Coordinators : Miren Ibargutxi Erostarbe, Pedro Luis Emparanza Bereciartua • Collaborators in the definition of the keys: Ana Basaguren, Emilio Martinez • Hortal, Eugenio Rico • Illustrations: Angel Dominguez

  2. ClassCRUSTACEA Eyes are attached to the body through a stalk Eyes without a stalk OrderDECAPODA 3 first pairs of legs ending to a claw 2 first pairs of legs ending to a claw Body laterally flattened Body dorsoventrally flattened Order Order

  3. Shell consisting of one piece Shell consisting of two pieces Φύλο MOLLUSCA Shell coiled Small size, lower than 1cm Big size, more than 1cm Shell without coiling Shell flat and disc-like, coiled in one plate Shell globe-like, not coiled in one plate Apex inclined to the central axis Apex hooked to the right Aperture of the shell great, occupying at least half of its size Aperture of the shell occupying 1/3 of its size Size lower or equal to 6mm. Without operculum Size more than 6mm that can be 15mm. With operculum Shell sinistral or left handed. The aperture to the left Shell dextral or right handed. The aperture to the right Apex rounded Apex sharp

  4. adults Larval stages ClassINSECTA Elongated stomatic appendages. 1st pair of wings partially sclerotized. Stomatic appendages not elongated. 1st pair of wings completely sclerotized. Simple eyes Compound eyes Animal without jointed legs. Tails or cerci extending from the last abdominal segment Last abdominal segment without cerci or tails Animal with jointed legs. Stomatic appendages elongated Labium modified, forming a mask Neither lateral gills attached to the abdomen nor a filamentous prolongation at the extreme of the abdomen Gills present on abdominal segments. Legs ending in one claw Abdomen without gills. Legs with 2 claws Abdomen with lateral segmented gills. A filamentous prolongation at the extreme of the abdomen Last abdominal segment with 2 hooks. Last abdominal segment without hooks or with 4 hooks.

  5. Order ΕPHEMEROPTERA Gills feathery consisting of 2 branches. No feathery gills. Gills like a plate. Body dorsoventrally flattened Body not flattened dorsoventrally Gills held on the dorsal surface of the abdominal segments. Gills held on the lateral surfaces Gills attached to the sides of the abdomen. Gills on the surface of the abdomen Gills of small size. Head triangular. Gills well developed. Head more wide than long 2nd pair of gills modified to form covers All gills are visible Gills with one or more filaments Gills without filaments

  6. OrderPLECOPTERA Tarsus segments with increasing size (1<2<3) The 2nd segment of tarsus has smaller size than the rest The 1st and 2nd segment of tarsus have the same size and are smaller than the 3rd Thorax with tufted gills Thorax without tufted gills Larval wings extending at the side of the body. 3rd pair of legs long, exceeding the abdomen’ s length. Larval wings parallel to the body. 3rd pair of legs short not exceeding the abdomen’s length Last segment of labial palps reduced and more narrow than the previous Last segment of labial palps slightly narrower than the previous The tergites and sternites of the 8th and the 9th somites are united The tergites and sternites of the 8th and the 9th somites are separated by a membranous band

  7. Head partially sclerotized OrderDIPTERA Jaws in the same elongated axis of the body Jaws are in vertical position regarding the axis of the body Abdomen with various prolongations or not Last abdominal segment extended 6 or more lobes surrounding the respiratory apertures 5 or less lobes surrounding the respiratory apertures Kinetic appendages like pseudopods Kinetic appendages forming washers Anal prolongations smaller in size than the pseudopods Anal prolongations longer than the pseudopods Respiratory case surrounded by lobes more or less fragmented 4 curved anal prolongations

  8. OrderDIPTERA Head completely sclerotized 9 or more corporal segments behind the head 6 corporal segments behind the head Presence of one and only pseudopode Presence of 2 pseudopods Absence of pseudopods One thoracic and one anal pseudopod 2 abdominal pseudopods Thorax more wide than the abdomen Thorax as wide as the abdomen Pseudopod present on 1st thoracic segment One anal pseudopod Head as long as wide Head twice longer than broad 12 corporal segments More than 15 corporal segments

  9. Only the 1st thoracic segment completely sclerotized. 2nd and 3rd segments are soft OrderTRICHOPTERA 1st and 2nd thoracic segments sclerotized, 3rd soft 9th abdominal segment with one dorsal sclerotized patch 9th abdominal segment without a sclerotized patch 3rd pair of legs long. Femur divided in two parts Femur of the 3rd pair of legs not divided, consisting of one segment Small anal hooks. Some of them have sclerotized patches on the 2nd and 3rd thoracic segments Protuberances of 1st abdominal segment rounded. Lateral protuberances of 1st abdominal segment compressed Anal legs consisting of one segment Anal legs consisting of 2 segments Strong anal hooks Claws of thoracic legs are longer or have the same size as tarsus Claws of thoracic legs are short

  10. 1st and 2nd thoracic segment completely sclerotized. 3rd thoracic segment with sclerotized patches Order TRICHOPTERA All 3 thoracic segments completely sclerotized Absence of ventral gills Presence of gills on thorax and abdomen Absence of protuberances on 1st abdominal segment Presence of protuberances on 1st abdominal segment Abdomen wider than head and thorax. Anal legs short consisting of one segment Abdomen cylindrical. Anal legs long 1st abdominal segment with 3 lateral protuberances (1 dorsal & 2 laterals 2 lateral protuberances. Absence of dorsal protuberance 2nd thoracic segment consisting of 2 sclerotized patches 2nd thoracic segment consisting of various sclerotized patches 3rd thoracic segment with 2 or more small patches in different position. 3rd thoracic segment consisting of two big transverse patches

  11. Body wide. Abdomen ending in 5 short fully sclerotized appendages. OrderODONATA Body narrow. Abdomen ending in 3 long branchial laminas Mask flat without filaments Mask hollow with filaments 1st article of the antennas has the same size or is longer than the rest. prementon with an elongated aperture 1st article of the antennas smaller than the rest. prementon without an elongated aperture Antennas with 4 articles Back legs shorter than the length of the abdomen Back legs longer than the length of the abdomen Antennas with 7 articles prementon without an incision in the center prementon with an incision in the center Cerci longer than the branchial laminas Cerci shorter than the branchial laminas prementon with 6 filaments at least. Branchial laminas without a threadlike apex prementon with 4 filaments. Branchial laminas ending in a threadlike apex

  12. OrderCOLEOPTERA (larvas) Legs with 4 articles Legs with 5 articles 9 abdominal segments 8 abdominal segments Last abdominal segment with 4 hooks Last abdominal segment without hooks Head not visible Long antennas. Body compressed Short antennas. Body not compressed Head visible Legs with 2 claws. Last abdominal segment with 2 cerci Legs with 1 claw Last abdominal segment with gills that are retiring to an operculum Last segment without gills

  13. Metacoxas united together. Their hind part exceeds the 1st visible sternite Τάξη COLEOPTERA Ενήλικα υδρόβια άτομα Metacoxas not united. Their hind part does not exceed the 1st visible sternite Labial palpsof the same size or bigger than the antennas Labial palps shorter than the antennas Short and strong antennas. Middle and back legs forming sculls. Eyes divided in two parts Long antennas. Normal legs, 3rd pair of legs with long filaments. Eyes not divided. Short antennas like a club Short and thin antennas Hind part of the pronotum broader than the front one Hind part of the pronotum not broader than the front Antennas with 10 parts. Broad metacoxal plates covering part of the femurs of the 3rd pair of legs Antennas with 11 parts. Metacoxal plates narrow, do not cover part of the femurs of the 3rd pair of legs Pronotum with 5 elongated lines Pronotum without elongated lines Elytrons truncated at the hind part of the body Elytrons not truncated

  14. Antennas longer than the head Τάξη HETEROPTERA Antennas not longer than the head Head narrow and long Head normal Triangular structure behind of the pronotum visible Triangular structure behind of the pronotum not visible Antennas with 4 articles Antennas with 5 articles Abdomen with a long respiratory siphon Abdomen without a respiratory siphon Femurs of 2nd and 3rd pair of legs long, longer than the abdomen Femurs of 2nd and 3rd pair of legs not longer than the abdomen Body compressed Body not compressed Size > 5mm. Hind legs long. Size < 3mm. Hind legs short Tibia without hooks. Color brown-black Tibia with hooks. Color green-yellow

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