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 ?
Aculeus (Figs 18-21) typical for Tephrellini, elongate, with narrow needle-like distal part.
Of course, Neosilba species have a less sclerotized aculeus in comparation to that of Anastrepha and Ceratitis species (tephritids), but further studies are needed to clarify if the females of Neosilba species are able to use muscular power to insert their eggs inside the fruit pulp or if the newly-hatched larvae are able to bore the fruit peel to reach and feed inside the fruits.
Elapsed time from first contact of the probe with the scorpion's body to the moment when the scorpion's aculeus (stinger) touched the target was recorded as sting latency.
Pyrgotidae Schiner, 1868 are medium to large-sized (4-18 mm) acalyptrate flies, which usually can be recognized by a rather slender (often wasp-like) body, pictured or hyaline wings with short lobate cell bcu, oblique face, genal groove prolongated postero-dorsally to the middle of occiput height, and stiletto-like aculeus that is much shorter than the oviscape.
Characters of the females, primarily of the aculeus, and body and wing markings, were considered in identifying species of Anastrepha (Zucchi 2000) identified by Garcia and Zucchi.
In males, the telson gland is light yellow; slightly pigmented near the lateral margins; ventral and lateral surfaces densely pigmented; aculeus dark brown.
The specific name, aculeus, means 'spine' or 'thorn' in reference to the sharp spine-like projections on the apices of the uncal lobes.
Coloration: entire body light yellow or light tan; carapace sometimes with variable dusky markings around median ocular tubercle, interocular triangle and carinae; ocular tubercle dark; telson aculeus and denticles of chelicerae and pedipalp fingers black.