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Hyalophora gloveri (Sonoran group) - Hyalophora columbia - male

Hyalophora gloveri (Sonoran group) - Hyalophora columbia - Male
Santa Rita Mountains, Box Canyon, Santa Cruz County, Arizona, USA
August 2, 1999
Collected at lights (Attracted to virgin Hyalophora sp. Females)
~4:00 am
~5,000 ft. a.s.l.
Coll. Bill Reynolds, Scott Smith & R. Otto

These moths are a bit divergent and distinct from other gloveri. Particularly regarding their coloration, larger size and development of red postmedial scaling, a strange character atypical of gloveri/columbia, but diagnostic in cecropia.

Final Note: These moths may be an ancient blend of several Hyalophora "species", part of the gloveri species cline or a remnant complex more closely allied to ancestral forms(???)

Examples from this locality

Additional examples from the Sonoran region of se. AZ

Also worth mention is the fact that adults of this type
can fly late in the summer with summer rains; there is either a staggered emergence of adults through spring and summer, or there is more than one brood per year (?which?). North and east of the Sonoran region there is one flight with adults in spring.

flight times
Agreed! Good Point.

Usually north of the Sonoran region in Arizona, "gloveri" fly earlier (March-early May). In the Sonoran region, there appears to be a small emergence early in the season provided rains and vegetation for the larvae are adequate to support them; however, for the most part, these populations seem to be staggered from most others and occur much later than those to the north and east.

There is still debate as to how many generations occur per year in this region (I personally think they are "opportunistically" bivoltine). It is thought, the early summer emergence may be from the previous late summer/fall brood, and some of these may even complete their cycle producing "split broods" (~partially bivoltine) provided there is sufficient vegetation and water.

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