aculeus


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aculeus

(əˈkjuːlɪəs)
n
1. (Botany) a prickle or spine, such as the thorn of a rose
2. (Zoology) a sting or ovipositor
[C19: from Latin, diminutive of acus needle]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.aculeus - a stiff sharp-pointed plant processaculeus - a stiff sharp-pointed plant process
plant process, enation - a natural projection or outgrowth from a plant body or organ
pricker, prickle, spikelet, sticker, thorn, spine - a small sharp-pointed tip resembling a spike on a stem or leaf
2.aculeus - a sharp-pointed process especially a sting of a hymenopterous insectaculeus - a sharp-pointed process especially a sting of a hymenopterous insect
stinger - a sharp organ of offense or defense (as of a wasp or stingray or scorpion) often connected with a poison gland
References in periodicals archive ?
Telson: Ventral surface of the vesicle with faint pigment pattern; dorsal surface whitish due to the presence of a glandular area; reddish aculeus.
A Kruskal-Wallis test conducted for each of the variables separately showed that individuals from Florida Blanca were the smallest in 6 of the significant variables, because they significantly differed in the variables related to body size (the 2 aculeus variables, wing, and thorax size).
The biogeographic region has one of the highest coral diversity in the world, harboring threatened species like the vulnerable staghorn coral (Acropora abrolhosensis) and dana staghorn coral (Acropora aculeus), and serves as an important source and sink not only for coral larvae but also for fish and other marine species.
The identification of the genus Anastrepha was based on morphological characters; observation of standard wings, thorax, and female aculeus morphology (Alberti et al.
solidaginis egg can only be determined by dissecting the bud, and some females may choose to reject a bud after puncturing it with their aculeus (Abrahamson and Weis, 1997).
Aculeus (Figs 18-21) typical for Tephrellini, elongate, with narrow needle-like distal part.
The cloaca is located just anterior to the posterior edge of the sternite and thus lies slightly anterior to the posterior edge of the aculeus. Just prior to intromission, in the three pairs observed, the female extends the ovipositor so that the apical portion of the aculeus is exposed and the male clamps the tip of the aculeus with his surstyli.
The stinger, or aculeus, is sharp, hollow, and connected to the venom gland.