Insects of the Family Dryinidae are commonly known as dryinids, a large family under the family Chrysidoidea of the order Membranoptera, and to date, nearly 1,800 species of cetaceae have been discovered and described, divided into 15 families and 50 genera. Listed below are 11 of these subfamilys:
1. Single-clawed crayfish subfamily (Anteoninae)
2. Subfamily Aphelopinae
3. Apoaphelopinae subfamily
4. Apodryininae subfamily
5. Subfamily Ctenophoridae (Bocchinae)
6. Subfamily Homocephalus (Conganteoninae)
7. Subfamily Crayfish (Dryininae)
8. Erwiniinae subfamily
9. Gonatopodinae
10. Plesiodryininae subfamily
11. Transdryininae subfamily
Female of alpine double-pitched cetaceans ( )
Cetaceans are widely distributed throughout the world. The name Dryinidae is derived from the Greek word "Dryinus", which means rubber. The stem "Dryini-" plus the family name suffix "-dae" is Dryinidae, to denote the family Cyprinidae. The zoologist Latreille is named because the crayfish were first collected from rubber trees in Spain. The larvae of the cetaceans are mainly nymphs that parasitize insects such as the suborder Hemiptera cephalopoda, leafhopper, horned cicada, foam cicada and wax cicada.
The cet wasps are small in size, with adults growing about 0.9 to 5.0 mm long, and individual species can be up to 13 mm long. The middle of the body (between the 1st and 2nd segments of the abdomen) is shrunk into a very thin bee waist. The 5th tarsal segment of the female forefoot and claws are specialized into claws for combing, catching prey and holding hosts, so its Chinese translation is cheetfish. The filamentous antennae have 10 segments. Many species of cet bees have obvious sex dichotomy: male and female individuals have great differences in body shape and size; males have wings, females often have no wings and resemble worker ants; female bees ovipositors are free to stretch and contract, and are not easy to see when contracted.
When a female crayfish lays eggs, the host nymph is controlled by the claws of the forefoot, and then the egg layer is pierced into her body and the eggs are released into the host body. The larvae of the cetacea are footless, or have only extremely degenerate feet. They feed on the host's internal tissues in the body, and when they reach a certain time, they protrude outward from the host's body to form a hard vesicular tumor, which is called a parasitic tumor (thylacium). Parasitic tumors have the effect of protecting the larvae of the cet, and the end result of parasitism is to kill the host, leaving only a shell, and then begin to cocoon the pupae. Therefore, the crawfish is an important natural enemy insect that can be developed for the biological control of pests.
The Wye's post-crayfish in amber is an extinct fossil species
A larvae of a cet bee under the right wing bud of a nymph
A species of plesiosaur ( )
A female of the crayfish ( )