Explanation of Names
Strauzia noctipennis Stoltzfus 1988
Body length: Male: 5.8-8.0 mm. Female: 6.0-8.1 mm. (Stoltzfus 1988)
Adults are found on the sawtooth sunflower Helianthus grossesrratus. Males have yellow or yellowish brown bodies with dark spots on the mesonotum near wings. Male wings have a very dark coalesced pattern. Females have yellow bodies and may also have small spots on mesonotum. Female wings have an "F" shaped pattern. Female Strauzia noctipennis and Strauzia arculata may be too morphologically similar to identify without genetic data.
Parasitizes the sawtooth sunflower, Helianthus grosseserratus.
Adults are present in June and July. Larvae mine the pith of the plant stems in the fall and pupae overwinter in the root or soil.
Univoltine life cycle (1 generation per year). Adults meet and mate on their host plant Helianthus grosseserratus in June and July.
Male Strauzia noctipennis can be identified by their dark coalesced wing patterns. Females may be impossible to identify from Strauzia arculata females using morphological characteristics. Both Strauzia noctipennis and Strauzia arculata are found on the sawtooth sunflower Helianthus grosseserratus.
is also found on Helianthus grosseserratus
and can be identified by different wing markings. See https://bugguide.net/node/view/1094085
varieties look similar to Strauzia noctipennis
but are found on a different host plant species, the Jerusalem artichoke Helianthus tuberosus
. See https://bugguide.net/node/view/1094085
1. Stoltzfus, W. B. "The taxonomy and biology of Strauzia (Diptera: Tephritidae)." Journal of Iowa Academy of Science 95.4 (1988): 117-126.
2. Foote, Richard Herbert, Francis Louis Blanc, and Allen Lee Norrbom. Handbook of the fruit flies (Diptera: Tephritidae) of America north of Mexico. Comstock Pub. Associates, 1993. Handbook of the fruit flies (Diptera: Tephritidae) of America north of Mexico