Olcella parva

(Adams, 1904)

chloropid fly, frit fly

Olcella parva is a of in the Chloropidae, first described by Adams in 1904 under the basionym Siphonella parva. It belongs to the New World Olcella, which exhibits high diversity in South America. The species has been documented engaging in kleptoparasitic , attracted to chemical cues from damaged or preyed-upon insects.

Pronunciation

How to pronounce Olcella parva: /ɔlˈsɛl.la ˈpar.va/

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Identification

Small fly in the Chloropidae. Members of the Olcella can be distinguished by features including a long geniculate , which likely facilitates feeding on fluids from prey. Specific diagnostic features for O. parva are not detailed in available sources.

Distribution

New World distribution; Olcella has high diversity in South America including Argentina.

Diet

Kleptoparasitic; feeds on fluids from prey of other . Has been observed feeding on stink bugs (Piezodorus guildinii) being preyed upon by assassin bugs. Attracted to chemical cues from defensive sprays of pentatomid and coreid .

Behavior

Engages in kleptoparasitism, congregating around and their prey to steal food resources. Attracted to damaged insects and defensive chemical secretions of prey . Has been observed crawling upon predators (including assassin bugs and spiders) and their prey during feeding events.

Ecological Role

Kleptoparasite that exploits -prey interactions, potentially serving as a food source indicator for conspecifics and facilitating mate location through at food sources.

Similar Taxa

Milichiella lacteipennisSimilar kleptoparasitic and ; both (Chloropidae and Milichiidae) are attracted to chemical cues from prey insects and congregate at feeding events. Distinguished by family-level morphological characters.
Other Chloropidae (Oscinellinae) members share general body plan and small size; Olcella distinguished by New World distribution and long geniculate .