Rivellia coquilletti
Hendel, 1914
Rivellia coquilletti is a of signal in the , first described by Hendel in 1914. Signal flies in this are associated with leguminous plants, with feeding on nitrogen-fixing root nodules. The species is closely related to R. quadrifasciata and R. colei, with which it shares distributions in parts of North America. signal flies are recognized by their characteristic -waving used for intraspecific communication.
Pronunciation
How to pronounce Rivellia coquilletti: /rɪˈvɛl.i.ə koʊˈkiː.jə.ti/
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Identification
Reliable separation from the closely related and largely R. colei requires examination of male . Members of the Rivellia can be distinguished from other by their relatively unmodified structure (lacking the extreme stalks seen in some Australasian signal ) and association with legume root nodules.
Habitat
Associated with leguminous plants; occur in soil where they feed on root nodules.
Distribution
North America; distribution details are poorly documented but the occurs in regions where it is with R. colei.
Diet
feed on nitrogen-fixing Rhizobium root nodules of leguminous plants. feeding habits are not documented for this , though related Rivellia species have been observed consuming nectar, , sap, and other liquid foods.
Life Cycle
are deposited in soil near roots. are small, , and -like, living in soil and feeding on root nodules. occurs in soil. emerge and are active on host plant foliage.
Behavior
exhibit the characteristic -waving typical of , in which wings are kept in constant motion while on leaves. This behavior functions in intraspecific signaling for mate recruitment, with -specific wing patterns and movement sequences.
Ecological Role
are consumers of nitrogen-fixing root nodules, potentially affecting nitrogen acquisition. The is considered a minor pest with limited economic impact due to the compensatory growth abilities of plants.
Human Relevance
Minor agricultural pest on leguminous . Damage to soybean and other legumes is generally considered insignificant because plants can withstand considerable nodule injury without yield reduction.
Similar Taxa
- Rivellia coleiClosely related and largely ; reliable separation requires examination of male
- Rivellia quadrifasciataMore common and widespread with similar biology and appearance; often cited in literature in association with soybean