H habitat n. [L. habitare, to dwell] The particular kind of environment where a race, species or individual lives. habitat selection The capability of a dispersing individual to select a particular (species-specific) environment. habitat type The ecotype. | H habitat n. L. habitare to dwell The particular kind of environment where a race species or individual lives. habitat selection The capability of a dispersing individual to select a particular species-specific environment. habitat type The ecotype. habitude n. L. habitus condition General appearance or conformation of an animal. habroderes . Gr. habros graceful deire neck KINOR In Echinoderidae the fourth juvenile stage to adulthood in which the midterminal spine is missing and a series of molts results in the loss of posterior middorsal spines until the adult complement is reached. hackled band ARTHRO Chelicerata In cribellate spiders composite threads spun by the cribellum and combed by the calamistrum setae. haem- for words not found here see hem- haemocoele see hemocoel haemocyte see hemocyte haemolymph see hemolymph haemostatic diaphragm or membrane ARTHRO In some arthropods an obstruction device between femur and trochanter preventing fluid loss after autotomy an occlusive diaphragm. haemoxanthine n. Gr. haima blood xanthos yellow AR-THRO Insecta An albuminoid protein in the hemolymph providing oxygen and nutritive materials. haft organ see frontal organ hair n. . haer hairy Seta chaeta trichome. see pubescence. hair pads ARTHRO Insecta 1. A group of sensory hairs combined to form pads near joints together with internal pro- Online Dictionary of Invertebrate Zoology 417 prioceptors that are involved in the normal bearing of the limbs also involved for measuring the vector of external forces and contributing to orientation of the animal. 2. A pad on the compound eyes of the honey bee and between the eyes of locusts controlling the self-generated flight speed. hair plates see hair pads haliotoid a. Gr. hals salt sea otos ear eidos like Earshaped. Haller s organ ARTHRO Insecta A complex sensory setal field within one or more pits on the dorsal aspect of tarsus I of ticks and mites providing sites for contact or olfactory chemoreception. .