''Rachicerus obscuripennis'' is a North American

Diptera Flies are insects of the order Diptera, the name being derived from the Greek δι- ''di-'' "two", and πτερόν ''pteron'' "wing". Insects of this order use only a single pair of wings to fly, the hindwings having evolved into advance ...

of the Rachicerinae family. It is the only North American species with pectinate (comblike)

flagellomeres An antenna (plural: antennae) is one of a pair of appendages used for sensing in arthropods. Antennae are sometimes referred to as ''feelers''. Antennae are connected to the first one or two segments of the arthropod head. They vary widely in ...

(antenna segments).

Distribution

United States The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 ...

References

Xylophagidae Insects described in 1863 Taxa named by Hermann Loew Diptera of North America {{Xylophagomorpha-stub