It was formerly considered to be conspecific with the paltry tyrannulet ( Zimmerius vilissimus ) .
The spectacled tyrannulet was described in 1871 by the English naturalists Philip Sclater and Osbert Salvin under the binomial name Tyranniscus improbus .
tyrannulet was formerly considered to be conspecific with the paltry tyrannulet ( Zimmerius vilissimus ) .
The spectacled tyrannulet was described in 1871 by the English naturalists Philip Sclater and Osbert Salvin under the binomial name Tyranniscus improbus .