Sticky situation: The tiny barbs (top) coating the tips of the quills from North American porcupines (bottom) make it more difficult to extract a quill from flesh, but they also help the quill penetrate the flesh in the first place, a new study suggests. Credit: Woo Kyung Cho
A spider that builds elaborate, fake spiders and hangs them in its web has been discovered in the Peruvian Amazon. Believed to be a new species in the genus Cyclosa, the arachnid crafts the larger spider from leaves, debris and dead insects. Though Cyclosa includes other sculpting arachnids, this is the first one observed to build a replica with multiple, spidery legs.
Illustration of behavioral task and prefrontal cortical recording localization. (F) Dimensionally relevant illustration of the conformal MEA positioned for simultaneous recording from neurons in both layers in adjacent minicolumns (1 and 2), each minicolumn consisting of a 'pair' of L2/3 and L5 PFC cells.