Silkspanner

The Silkspanner is a flightless dragon first seen in Burning Midnight. Its name was revealed in Dragonvine in which it will appear.

Hatchling to Adult
The Silkspanner is a six-legged wingless dragon. It has four eyes, a bigger pair and a smaller pair. It has chelicereaes, similar to a spider's. Its body is green with yellow underbelly and light purple legs. IS has a row of long sharp spines along its back and a long tail. It has long thin claws ad a small membranae between its fingers. It has a lot of thin spines on its head and under the chin.

Spitting Webs
As mentioned in the overview of Dragonvine, this dragon can create webs, similar to those of a spider, and trap its victims in them.

Climbing
As seen in Burning Midnight, these dragons can climb a vertical rock wall and trees with their long claws.

Burning Midnight
At the end of this comic, when Hiccup and Toothless get out of a cave, multiple Silkspanners are surrounding them.

Dragonvine
Their name and ability was revealed in the overview of this comic. They will later appear in it.

Trivia

 * It is the second dragon with more than a pair of eyes, the first being the Red Death.
 * The Silkspanners from Burning Midnight do not have chelicereaes like the ones from Dragonvine.
 * It is the fourth flightless dragon and the second one without wings.
 * It is also the fourth dragon with more than two pairs of legs, the others being the Fireworm, the Hackatoo, and the Thunderpede.