Stefan F. Wirth<p>Below a <a href="https://biologists.social/tags/grasshopper" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>grasshopper</span></a> nymph of the <a href="https://biologists.social/tags/Chorthippus" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Chorthippus</span></a> <a href="https://biologists.social/tags/biguttulus" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>biguttulus</span></a> <a href="https://biologists.social/tags/group" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>group</span></a>, including closely related European <a href="https://biologists.social/tags/species" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>species</span></a> C. biguttulus, C. brunneus, and C. mollis. They cannot be clearly differed <a href="https://biologists.social/tags/morphologically" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>morphologically</span></a>, only by their <a href="https://biologists.social/tags/songs" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>songs</span></a>. B. Gottsberger & F. Mayer (2019) studied mechanisms of <a href="https://biologists.social/tags/speciesboundarystabilization" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>speciesboundarystabilization</span></a> between C. brunneus/C. biguttulus, which can <a href="https://biologists.social/tags/hybridize" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>hybridize</span></a>. But hybrids exhibit <a href="https://biologists.social/tags/songpreferences" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>songpreferences</span></a> of C. biguttulus females.</p><p>©<a href="https://biologists.social/tags/StefanFWirth" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>StefanFWirth</span></a> 2025</p><p>Ref<br><a href="https://doi.org/10.1111/jeb.13490" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="">doi.org/10.1111/jeb.13490</span><span class="invisible"></span></a></p><p>Photos<br>S.F. Wirth</p>