California vs Great Spreadwing

Two species of stream spreadwings (Archilestes sp.) live in Arizona: the Great (A. grandis) and the California (A. californicus) Spreadwings. These species are easily separated from pond spreadwings (Lestes sp. ) by their considerably larger sizes.

New Arizona species: Neotropical Bluet, Enallagma novaehispaniae, Maricopa

On 16 November 2010 Richard Bailowitz discovered two mature male Neotropical Bluets, Enallagma novaehispaniae, at an artificial pond in an agricultural area along the Painted Rock Dam in western Maricopa County, and collected one of these individuals.

One male (presumably the same individual as seen 16 Nov.) was relocated the next day at the same spot and photographed.

The Neotropical Bluet is found South of Arizona in Sonora, Mexico and in Texas, but had until now never been observed in Arizona.

Tezpi Dancer, Argia tezpi at Wild Horse Pass, Maricopa

The Tezpi Dancer, Argia tezpi, in Arizona is usually found at rocky shallow streams and rivers in the Southeast corner of the state (Paulson 2009). It has been found as far north as Kelvin Bridge, Pinal, along the Gila River approx. 65 miles E. of Phoenix, Maricopa.

On 10 November 2010 a mature male was observed along the Wild Horse Pass stream just south of Phoenix, apparently providing a first county record for the species. What is probably the same individual was found at the same location on 14 November 2010

More "low elevation" Canyon Rubyspots, Hetaerina vulnerata, Pinal Co.

Canyon Rubyspots, Hetaerina vulnerata, in Arizona are usually found along wooded canyon streams (Paulson 2009) and at elevations above 850 m (Bailowitz, personal communication). Several individuals were, however, recently observed at Spur Cross Conservation Area, Maricopa (elevation: 680 m; see 24 Oct. 2010 News item), the lowest elevation to date at which the species has been recorded in the state.

Desert Forktail, Ischnura barberi, in Maricopa Co.: new late flying date for Arizona

Two forktail species, the Rambur’s (Ischnura ramburii) and the Desert (I. barberi) Forktails are commonly found in the southern half of Arizona (Paulson 2009). The two species use various habitats including ponds, lakes, marshes, etc, and they are often encountered at a same site. Despite this similarity in habitat choice, the Rambur’s and Desert Forktails have different phenologies: the Rambur’s Forktail in Arizona flies year-round whereas the Desert Forktail is normally not seen flying between November and early February.


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