Scanning electron microscopic (SEM) images of various love-darts. Upper image is love dart from side view while the measure is 500 μm (0.5 mm). Lower image is cross-section while the measure is 50 μm.
<p>upper row:
</p>
<ul><li><i><a href="//commons.wikimedia.org/wiki/Trichia_hispida" class="mw-redirect" title="Trichia hispida">Trichia hispida</a></i></li>
<li><i><a href="//commons.wikimedia.org/w/index.php?title=Xerarionta_kellettii&amp;action=edit&amp;redlink=1" class="new" title="Xerarionta kellettii (page does not exist)">Xerarionta kellettii</a></i></li>
<li><i><a href="//commons.wikimedia.org/wiki/Bradybaena_similaris" title="Bradybaena similaris">Bradybaena similaris</a></i></li>
<li><i><a href="//commons.wikimedia.org/wiki/Chilostoma_cingulatum" title="Chilostoma cingulatum">Chilostoma cingulatum</a></i></li></ul><p>lower row:
</p>
<ul><li><i><a href="//commons.wikimedia.org/w/index.php?title=Humboldtiana_nuevoleonis&amp;action=edit&amp;redlink=1" class="new" title="Humboldtiana nuevoleonis (page does not exist)">Humboldtiana nuevoleonis</a></i></li>
<li><i><a href="//commons.wikimedia.org/wiki/Leptaxis_erubescens" title="Leptaxis erubescens">Leptaxis erubescens</a></i></li>
<li><i><a href="//commons.wikimedia.org/wiki/Cepaea_hortensis" title="Cepaea hortensis">Cepaea hortensis</a></i></li>
<li><i><a href="//commons.wikimedia.org/w/index.php?title=Monachoides_vicinus&amp;action=edit&amp;redlink=1" class="new" title="Monachoides vicinus (page does not exist)">Monachoides vicinus</a></i></li></ul>
Joris M. Koene and Hinrich Schulenburg
CC BY 2.0
Joris M. Koene and Hinrich Schulenburg: <a rel="nofollow" class="external text" href="http://www.biomedcentral.com/1471-2148/5/25">Shooting darts: co-evolution and counter-adaptation in hermaphroditic snails</a>. - BMC Evolutionary Biology, 2005, 5:25 <a href="//doi.org/10.1186/1471-2148-5-25" class="extiw" title="doi:10.1186/1471-2148-5-25">doi:10.1186/1471-2148-5-25</a>. Figure 2 <a rel="nofollow" class="external free" href="http://www.biomedcentral.com/1471-2148/5/25/figure/F2?highres=y">http://www.biomedcentral.com/1471-2148/5/25/figure/F2?highres=y</a> - The source TIFF: <a rel="nofollow" class="external free" href="http://www.biomedcentral.com/content/download/figures/1471-2148-5-25-2.TIFF">http://www.biomedcentral.com/content/download/figures/1471-2148-5-25-2.TIFF</a>