A sample of images from the MZB Families Key

01. Argulidae - habitus ventral
02. Pectinatellidae - statoblast
03. Clavidae - polyp, tentacles
04. Gammaridae - habitus lateral
05. Aeshnidae (larvae) - head fronto-lateral
06. Hydrachnidae - genital field
07. Chaoboridae (larvae) - head lateral
08. Triopsidae - phyllopod
09. Hirudinidae - pharyngeal teeth
10. Blephariceridae (larvae) - anterior body ventral
11. Artemiidae - anterior body ventral
12. Nepidae (adult) - foreleg
13. Palingeniidae (larvae) - head dorsal
14. Limnadiidae - habitus lateral
15. Melanopsidae - shell frontal, aperture
16. Cambaridae - anterior body lateral
17. Hydryphantidae - anterior body frontal
18. Lestidae (larvae) - labial palp
19. Tubificidae - palmate chaetae
20. Prosopistomatidae - habitus ventral