hemolymph

Hemolymph is the scientific name for insect "blood." The circulatory system of insects differs from that of vertebrates and many other invertebrates in being "open". In insects, "blood" is confined to vessels during only a portion of its circuit through the body. The remainder of its journey takes place within the body cavity (called the hemocoel)
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Hemolymph /he·mo·lymph/ 1. blood and lymph. 2. the bloodlike fluid of those invertebrates having open blood-vascular systems. he·mo·lymph n. [more]Hemolymph - Community and Resources