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Sesiidae

Family of moths From Wikipedia, the free encyclopedia

Sesiidae
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The Sesiidae or clearwing moths are a diurnal moth family in the order Lepidoptera known for their Batesian mimicry in both appearance and behaviour of various Hymenoptera.

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Synanthedon tipuliformis, larva

The family consists of 165 genera spread over two subfamilies, containing in total 1525 species and 49 subspecies,[1] most of which occur in the tropics, though there are many species in the Holarctic region as well, including over a hundred species known to occur in Europe.[2]:Backcover,6

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Morphology

Sesiidae are characterized by their hymenopteriform[a] Batesian mimicry, frequently of identifiable species.[2]:11,16 Most species of Sesiidae have wings with areas where scales are nearly completely absent, resulting in partial, marked transparency.[2]:11 Forewings are commonly elongated and narrow in the basal half.[2]:11 In many species, the abdomen is elongated, with an anal tuft, and striped or ringed yellow, red or white,[2]:11 sometimes very brightly so. Legs are long, thin and frequently coloured,[2]:11 and in some species the hind-legs are elongated.[3] In European species, the wing span ranges from 8 to 48 mm.[2]:11

Larvae lack pigment. Segments of the thorax are somewhat enlarged.[2]:11

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Behaviour

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Melittia cucurbitae hovering for nectar

The larvae of the Sesiidae typically bore in wood or burrow in plant roots. Many species are serious pests of fruit-tree or timber cultivation, or crop plants (e.g. Melittia spp. on squash) (Edwards et al., 1999). Larval development lasts 1–4 years, pupal stage 10–20 days.[2]:16

Adults are diurnally active.[3][2]:16 Specimens are commonly collected using pheromone lures.[3][2]:22

Movements, including hovering flight, mimic those of Hymenoptera spp.[2]:16 [4]

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Taxonomy

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References

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