Figure 4. Selected frames from a 30 in A trap door jumping spider from Brazil (Araneae: Salticidae: Marpissina: Balmaceda sp.)

Figure 4. Selected frames from a 30fps video showing the retreat of Balmaceda into the lower end of its vertical retreat. At the end of this sequence the spider quickly pulled the lid (or entrance) of its retreat down (arrow, frame 113). This is barely perceptible in the image shown here, but is quite evident in the video.