Definition of haustellum in English:

haustellum

nounPlural haustella hɔːˈstɛləmhôˈsteləm

Zoology

The sucking organ or proboscis of an insect or crustacean.
〔动〕（昆虫或甲壳纲动物的）吸喙
Example sentencesExamples
- It is about 4-5 cm long, and has a kind of ‘hook’ at the head, which is where the moth's tongue, or haustella, is formed.
- Adult mouthparts are reduced, with mandibles essentially absent, but the maxillary and labial palps, and often the haustellum, are prominent.
- The feeding structures of lice are complex, including the haustellum, a proboscis-like tube with teeth, which is used to pierce the host's skin.

Derivatives

haustellate

adjective ˈhɔːstələtˈhɔːstəleɪt

Zoology

Sucking lice have stylate haustellate mouthparts (piercing-sucking).
Example sentencesExamples
- In the haustellate type, it is the mandibular and maxillary appendages that are similar, whereas the labial appendages exhibit a completely different structure.
- They are distinguished from the other major group of insects with haustellate mouthparts, the Order Hemiptera or true bugs, in that Homopteran beaks arise on the back of the head, while Hemipteran beaks arise from the front of the head.
- Haustellate mouthparts are primarily used for sucking liquids and can be broken down into two subgroups: those that possess stylets and those that do not.
- A second branch of the hemipteroid lineage includes insects in which the haustellate mouthparts contain feeding stylets derived from both the mandibles and maxillae.

Origin

Early 19th century: modern Latin diminutive of haustrum 'scoop', from haust- 'drawn in', from the verb haurire.

Definition of haustellum in US English:

haustellum

nounhôˈsteləm

Zoology

The sucking organ or proboscis of an insect or crustacean.
〔动〕（昆虫或甲壳纲动物的）吸喙
Example sentencesExamples
- Adult mouthparts are reduced, with mandibles essentially absent, but the maxillary and labial palps, and often the haustellum, are prominent.
- The feeding structures of lice are complex, including the haustellum, a proboscis-like tube with teeth, which is used to pierce the host's skin.
- It is about 4-5 cm long, and has a kind of ‘hook’ at the head, which is where the moth's tongue, or haustella, is formed.

Origin

Early 19th century: modern Latin diminutive of haustrum ‘scoop’, from haust- ‘drawn in’, from the verb haurire.

单词	haustellum
释义	Definition of haustellum in English: haustellum nounPlural haustella hɔːˈstɛləmhôˈsteləm Zoology The sucking organ or proboscis of an insect or crustacean. 〔动〕（昆虫或甲壳纲动物的）吸喙 Example sentencesExamples It is about 4-5 cm long, and has a kind of ‘hook’ at the head, which is where the moth's tongue, or haustella, is formed. Adult mouthparts are reduced, with mandibles essentially absent, but the maxillary and labial palps, and often the haustellum, are prominent. The feeding structures of lice are complex, including the haustellum, a proboscis-like tube with teeth, which is used to pierce the host's skin. Derivatives haustellate adjective ˈhɔːstələtˈhɔːstəleɪt Zoology Sucking lice have stylate haustellate mouthparts (piercing-sucking). Example sentencesExamples In the haustellate type, it is the mandibular and maxillary appendages that are similar, whereas the labial appendages exhibit a completely different structure. They are distinguished from the other major group of insects with haustellate mouthparts, the Order Hemiptera or true bugs, in that Homopteran beaks arise on the back of the head, while Hemipteran beaks arise from the front of the head. Haustellate mouthparts are primarily used for sucking liquids and can be broken down into two subgroups: those that possess stylets and those that do not. A second branch of the hemipteroid lineage includes insects in which the haustellate mouthparts contain feeding stylets derived from both the mandibles and maxillae. Origin Early 19th century: modern Latin diminutive of haustrum 'scoop', from haust- 'drawn in', from the verb haurire. Definition of haustellum in US English: haustellum nounhôˈsteləm Zoology The sucking organ or proboscis of an insect or crustacean. 〔动〕（昆虫或甲壳纲动物的）吸喙 Example sentencesExamples Adult mouthparts are reduced, with mandibles essentially absent, but the maxillary and labial palps, and often the haustellum, are prominent. The feeding structures of lice are complex, including the haustellum, a proboscis-like tube with teeth, which is used to pierce the host's skin. It is about 4-5 cm long, and has a kind of ‘hook’ at the head, which is where the moth's tongue, or haustella, is formed. Origin Early 19th century: modern Latin diminutive of haustrum ‘scoop’, from haust- ‘drawn in’, from the verb haurire.
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