spiculum

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spiculum

[′spik·yə·ləm]
(invertebrate zoology)
A bristlelike copulatory organ in certain nematodes. Also known as copulatory spicule.
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I thank Max Reinhart for bringing to my attention a symbolic interpretation of the "Parthian shot" in Georg Philipp Harsdorffer, Auloea romana contra Peristromata Turcica expansa: sive, Dissertatio coneordice Christianae omen repraesentans (Nuremberg: Wolfgang Endter, 1641) H2v, 60: Veluti Scythae & Parthi hostes; ita Emblemata Apodosim, vel in ipsa fuga ingeniose insinuant, & spicula quasi retrospiciendo vibrare debent.
6x as long as wide and almost smooth; funicle (excluding 4 anelli, second anellus very short) 3-segmented, F1 the longest funicle segment, slightly longer than pedicel, F2 about as long as F3; clava 2-segmented, apical claval segment with a spicula and about 1.
Andropogon lateralis similis sed gluma prima inter nervos sulco longitudinali profunde canaliculata praedita, laminae ensiformes et spicula pedicellata brunnea differt.
1 tendentem spicula and O Phoebe have no representative in the Greek, and in 4.