Catocala robinsoni
kah-TOCK-uh-lah mm ROB-in-sun-eye
Grote, 1872

Catocala robinsoni by of Vernon A. Brou, Louisiana.

This site has been created by Bill Oehlke at oehlkew@islandtelecom.com
Comments, suggestions and/or additional information are welcomed by Bill.

TAXONOMY: Superfamily: Noctuoidea Family: Noctuidae Group: Noctuinina Subfamily: Catocalinae Genus: Catocala, Schrank, 1802

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DISTRIBUTION:

Catocala robinsoni, Robinson's Underwing, (wingspan: 70-80mm), flies in southern Ontario and New Hampshire south to Florida west to Oklahoma, Missouri and Arkansas and northward to Illinois, Indiana and Michigan (rare).

Robinsoni have relatively plain pale grey forwewings. The female has a basal dash which is absent in the male.

Currata French, 1882, is the female form, having a weak basal dash.

The rare form missouriensis Schwarz, 1915, has a dark, broad bar extending from the basal area to the outer margin just below the apex. The lighter grey reniform and subreniform spots break the bar in missouriensis, found from Pennsylvania to Florida.

All forms have white fringe on the hindwings, and the bands on the ventral surface are very prominent.

Robinsoni is listed as a vanishing insect in Michigan and South Carolina and is probably rare throughout the rest of its range.

FLIGHT TIMES AND PREFERRED FOOD PLANTS:

Catocala robinsoni are on the wing from late July to early October (October 11).

The Catocala robinsoni caterpillar feeds on Juglans, Carya and Quercus.

ECLOSION:

Adults eclose from pupae at soil surface.

SCENTING AND MATING:

Catocala robinsoni females emit an airbourne pheromone and males use their antennae to track the scent plume.

EGGS, CATERPILLARS, COCOONS, AND PUPAE:

Eggs are deposited on tree bark in the fall and hatch the following spring.

Larval Food Plants

Listed below are primary food plant(s) and alternate food plants. It is hoped that this alphabetical listing followed by the common name of the foodplant will prove useful. The list is not exhaustive, although some species seem very host specific. Experimenting with closely related foodplants is worthwhile.

Carya ovata Juglans Quercus alba.......

Shagbark hickory Walnut White oak

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