New York Natural Heritage Program
Mocha Emerald
Somatochlora linearis (Hagen, 1861)
Insects

Habitat [-]
Mocha Emeralds inhabit small, shaded streams in forested areas that are about 1-3 yards wide with sand, gravel, or rocky substrates (Dunkle 2000, Nikula et al. 2003, Holst 2005). Larvae are aquatic and found in the water during this lifestage, whereas adults are terrestrial and are found in habitats surrounding forested streams.

Associated Ecological Communities [-]
  • Intermittent stream*
    The community of a small, intermittent or ephemeral streambed in the uppermost segments of stream systems where water flows only during the spring or after a heavy rain and often remains longer, ponded in isolated pools. These streams typically have a moderate to steep gradient and hydric soils.

    * probable association but not confirmed
  • Marsh headwater stream*
    The aquatic community of a small, marshy perennial brook with a very low gradient, slow flow rate, and cool to warm water that flows through a marsh, fen, or swamp where a stream system originates. These streams usually have clearly distinguished meanders (i.e., high sinuosity) and are in unconfined landscapes.

    * probable association but not confirmed
  • Rocky headwater stream*
    The aquatic community of a small- to moderate-sized perennial rocky stream typically with a moderate to steep gradient, and cold water that flows over eroded bedrock, boulders, or cobbles in the area where a stream system originates.

    * probable association but not confirmed

Associated Species [-]
  • Sable Clubtail (Gomphus rogersi)
  • Ocellated Emerald (Somatochlora minor)