Ranatra montezuma

J. Polhemus, 1976

Montezuma waterscorpion

Ranatra montezuma is a waterscorpion to Montezuma Well, a thermally constant, fishless spring in Yavapai County, Arizona. It was described by J. Polhemus in 1976 and represents a highly localized with specific dietary to its unique aquatic environment. The species exhibits foraging and maintains high supported by abundant endemic .

Ranatra montezuma by (c) Matthew Pintar, some rights reserved (CC BY), uploaded by Matthew Pintar. Used under a CC-BY license.

Pronunciation

How to pronounce Ranatra montezuma: /rəˈneɪtrə ˌmɒntɪˈzuːmə/

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Identification

to Montezuma Well; distinguished from other Ranatra by geographic restriction to this single spring system. As with other , possesses elongated body with long, thin at end and forelegs adapted for capturing . Specific morphological diagnostic features distinguishing it from not documented in available sources.

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Habitat

Montezuma Well, a thermally constant, fishless spring environment in central Arizona. Occupies littoral vegetation zones where are elevated. The spring maintains stable thermal conditions year-round, supporting a distinctive aquatic .

Distribution

to Montezuma Well, Yavapai County, Arizona, United States. No other known.

Diet

First- feed primarily on copepods. preferentially consume the amphipod Hyalella montezuma. Also preys upon (Telebasis salva), though less frequently due to their sedentary .

Behavior

forager; feeds more actively at night when are elevated in littoral vegetation. Prey strongly influences capture success: actively swimming prey (Hyalella montezuma) are captured more frequently than sedentary prey ( ).

Ecological Role

in a simplified, fishless aquatic . High standing maintained by abundant resources.

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