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Definition of prothorax in English: prothoraxnoun prəʊˈθɔːraks Entomology The anterior segment of the thorax of an insect, not bearing any wings. Example sentencesExamples - Relative to the foundress, soldiers have an enlarged prothorax and fore femora, reduced wings and antennae, and a pale exoskeleton.
- The prothorax is small, the legs slender, the first pair elongate.
- This expansion of the posterior expression boundaries was examined in detail and correlated with derived morphological structures of the prothorax as compared with the most primitive apterygote species.
- Next, the head separates from the prothorax from 30 weeks.
- The head is analogous to a statolith, the movements of which are monitored by fields of hair sensilla located on the head, neck, and prothorax.
- In comparison, Drosophila Polycomb mutant embryos have ectopic denticles on the dorsal head, and the second thoracic segment is anteriorly transformed to prothorax while abdominal segments are posteriorly transformed.
Derivatives adjective Entomology A typical male will clasp the lateral edges of the female's elytra with his prothoracic and mesothoracic legs, while his metathoracic legs are extended behind to serve as stabilizers when they drag on the substrate. Example sentencesExamples - The relative speeds of the three species were found to be correlated with leg length and muscle mass, as well as with prothoracic temperature during activity.
- These steroid hormones are produced by the crustacean Y-organs and the insect prothoracic glands.
- Progress in this field is the subject of a recent review in which signaling systems so far known in vertebrate steroidogenic glands (ovaries, testes, adrenal cortex), insect prothoracic glands and crustacean Y-organs are compared.
- Flying mantids that hear ultrasound perform a bat evasion behavior that comprises a head roll, complete prothoracic leg extension, wing beat changes, and abdomen dorsiflexion.
Definition of prothorax in US English: prothoraxnounproʊˈθɔrˌæksprōˈTHôrˌaks Entomology The anterior segment of the thorax of an insect, not bearing any wings. Example sentencesExamples - This expansion of the posterior expression boundaries was examined in detail and correlated with derived morphological structures of the prothorax as compared with the most primitive apterygote species.
- The head is analogous to a statolith, the movements of which are monitored by fields of hair sensilla located on the head, neck, and prothorax.
- Relative to the foundress, soldiers have an enlarged prothorax and fore femora, reduced wings and antennae, and a pale exoskeleton.
- In comparison, Drosophila Polycomb mutant embryos have ectopic denticles on the dorsal head, and the second thoracic segment is anteriorly transformed to prothorax while abdominal segments are posteriorly transformed.
- The prothorax is small, the legs slender, the first pair elongate.
- Next, the head separates from the prothorax from 30 weeks.
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