Adult male Liphistius have dense hair pads on the ventral side of their tarsi. At first glance they appear like the adhesive scopulae, which are well known from mygalomorph spiders. However, a fine structural analysis of these scopulate hairs shows that they lack the brush-like structure with tiny “endfeet” that is typical for such adhesive hairs. Instead, the smooth hair shaft exhibits a small pore ventrally, about 8–10 µm from the blunt tip. A thin cuticular canal extends from that pore through the middle of the hair shaft and terminates about 30 µm above the hair base. Transmission electron microscopy reveals that this central canal contains about 16 delicate dendrites. The morphology of these scopulate hairs thus corresponds closely to contact chemoreceptors known from other spiders. Since these scopulate hairs occur only in adult males, they are likely involved in the perception of female pheromones.
You have requested a machine translation of selected content from our databases. This functionality is provided solely for your convenience and is in no way intended to replace human translation. Neither BioOne nor the owners and publishers of the content make, and they explicitly disclaim, any express or implied representations or warranties of any kind, including, without limitation, representations and warranties as to the functionality of the translation feature or the accuracy or completeness of the translations.
Translations are not retained in our system. Your use of this feature and the translations is subject to all use restrictions contained in the Terms and Conditions of Use of the BioOne website.
Vol. 38 • No. 3