Fig. 2From: Fine structure of the silk spinning system in the caddisworm, Hydatophylax nigrovittatus (Trichoptera: Limnephilidae)a-d Scanning electron micrographs of the spinneret (Sp) and silk fiber (Sk) of the caddisworm H. nigrovittatus. Sp: spinneret. Arrows indicate the marginal area between the cuticular duct and luminal silk material. Scale bars indicate 25 μm (c), 10 μm (a), and 5 μm (b, d), respectivelyBack to article page