| 词条 | Trigonalidae |
| 释义 |
| fossil_range = {{fossil_range|earliest=Triassic|210|0|Triassic-Present}} | image = Trigonalid - Orthogonalys pulchella (Cresson) (15646350670).jpg | image_caption = Orthogonalys pulchella | taxon = Trigonalidae | authority = Cresson, 1887[1] | subdivision_ranks = Genera | subdivision = >15, including:
}} The Trigonalidae (sometimes spelled Trigonalyidae but the former spelling has formal precedence)[2][3] are one of the more unusual families of hymenopteran insects, of indeterminate affinity within the suborder Apocrita (though sometimes believed to be related to the Evanioidea), and presently placed in its own superfamily, Trigonaloidea. The Trigonalidae are divided into two subfamilies, Orthogonalinae and Trigonalinae. These wasps are extremely rare, but surprisingly diverse, with some 90 species in over 15 genera, and are known from all parts of the world.[4] What little is known about the biology of these insects indicates a remarkably improbable life history: in nearly all known species, females lay thousands of minute eggs, "clamping" them to the edges of, or injecting them inside leaves. The egg must then be consumed by a caterpillar. Once inside the caterpillar, the trigonalid egg either hatches and attacks any other parasitoid larvae (including its siblings) in the caterpillar, or it waits until the caterpillar is killed and fed to a vespid larva, which it then attacks. If the caterpillar is neither attacked by another parasitoid or fed to a vespid, the trigonalid larva fails to develop. Therefore, they are parasitoids or hyperparasitoids, but in a manner virtually unique among the insects, in that the eggs must be swallowed by a host. A few species are known exceptions, which directly parasitise sawflies.[5] {{-}}References1. ^Synopsis of the families and genera of the Hymenoptera of America, north of Mexico, together with a catalogue of the described species, and bibliography. ET Cresson, Transactions of the American Entomological Society …, 1887 2. ^{{cite journal |last1=Aguiar |first1=Alexandre P. |last2=Deans |first2=Andrew R. |last3=Engel |first3=Michael S.|last4=Forshage |first4=Mattias |last5=Huber|first5=John T.|display-authors=etal |title=Order Hymenoptera. In: Zhang, Z.-Q. (Ed.) Animal Biodiversity: An Outline of Higher-level Classification and Survey of Taxonomic Richness (Addenda 2013) |journal=Zootaxa |date=30 August 2013 |volume=3703 |issue=1 |pages=51 |doi=10.11646/zootaxa.3703.1.12}} 3. ^[https://www.sfu.ca/~carmean/trig/name.html Trigonalidae Website] 4. ^{{Cite journal|last=Carmean|first=David|last2=Kimsey|first2=Lynn|date=1998-01-01|title=Phylogenetic revision of the parasitoid wasp family Trigonalidae (Hymenoptera)|journal=Systematic Entomology|language=en|volume=23|issue=1|pages=35–76|doi=10.1046/j.1365-3113.1998.00042.x|issn=1365-3113}} 5. ^{{Cite book|title=Borror and DeLong's introduction to the study of insects|last=A.|first=Triplehorn, Charles|date=2005|publisher=Thompson Brooks/Cole|others=Johnson, Norman F., Borror, Donald J. (Donald Joyce), 1907-1988.|isbn=9780030968358|edition=7th|location=Belmont, CA|oclc=55793895}} External links
2 : Parasitica|Apocrita families |
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