Celatoria

Species-level identification within Celatoria requires examination of morphological characters not detailed in available sources. The genus is distinguished from other tachinid genera by parasitoid associations with chrysomelid beetles, though this is not unique to Celatoria. Adult flies are typical of Tachinidae in general body plan.

Agricultural systems, particularly those involving cucurbit crops and maize. Documented from diverse farm locations in central New York State and evaluated for biological control in European maize systems.

New World distribution with species recorded from North America (central New York State), South America (Argentina, Brazil), and evaluated for introduction to Europe. Specific range varies by species: C. setosa in northeastern USA, C. bosqi in South America, C. compressa in regions where its host Diabrotica virgifera virgifera occurs.

Activity coincides with host beetle presence during growing seasons. In central New York State, documented occurrence spans at least two growing seasons with parasitism rates tracked seasonally.

• Acalymma vittatum (striped cucumber beetle) - parasitoid hostDocumented for C. setosa; adult parasitism with larval development inside host
• Diabrotica virgifera virgifera (western corn rootworm) - parasitoid hostDocumented for C. compressa; females insert eggs containing fully-developed first instars directly into adult hosts
• Diabrotica spp. - parasitoid hostDocumented for C. bosqi; South American species with broader Diabrotica host range

Females are larviparous, depositing eggs containing fully-developed first instars directly into host adults. In C. compressa, newly emerged 1-hour-old females mate successfully with 2- to 5-day-old males. A pre-larviposition period of 4 days follows mating. Total developmental time from egg insertion to puparium is approximately 25 days under laboratory conditions (25°C daytime, 15°C night, 14:10 L:D). Females produce on average 30 puparia over a mean larviposition period of 15 days. Mean larviposition success rate is 24% per female, with many host attacks unsuccessful due to difficulties inserting eggs through host intersegmental sutures or leg membranes.

Adult parasitism strategy involves direct attack on host beetles. Parasitized hosts exhibit reduced performance, including decreased feeding (49.6% less leaf tissue consumption in female hosts), reduced oviposition, and diminished pheromone emission (52.5% reduction in male-specific aggregation pheromone vittatalactone). Non-consumptive effects occur: exposure to parasitoids alone reduces host foliar damage. These effects disrupt host mating communication and suppress pest populations.

Biological control agent of chrysomelid agricultural pests. Parasitism rates reach up to 43% with mean rates around 8.67% in field populations. Contributes to natural pest suppression in cucurbit and maize agroecosystems through both consumptive and non-consumptive effects on host populations.

Evaluated and utilized as a biological control agent for invasive and native agricultural pests. C. compressa assessed for introduction to Europe against western corn rootworm. C. setosa studied for management of striped cucumber beetle in North American cucurbit production. Small-scale rearing techniques developed, though labor-intensive; maintained for at least 20 successive generations in laboratory conditions without sex ratio distortion.

• Centistes (Syrrhizus) diabroticaeCo-occurring adult parasitoid of Acalymma vittatum in New York State; both species parasitize the same host, requiring field identification to distinguish parasitoid species responsible for observed parasitism
• Other Tachinidae (Blondeliini)Share general body plan and parasitoid lifestyle; distinguished by specific host associations with chrysomelid beetles and documented larviparous reproductive strategy

• parasitoid
• tachinid
• biological control
• Chrysomelidae
• larviparous
• agricultural pest management

• BugGuide
• Wikipedia
• GBIF taxonomy match
• NCBI Taxonomy
• Catalogue of Life
• Using Cucumis sativus, Acalymma vittatum, Celatoria setosa, and generalist pollinators as a case study for plant–insect interactions
• Parasitoid tachinid fly, Celatoria setosa, reduces performance, oviposition, and pheromone emission in herbivore pest, Acalymma vittatum
• Seasonal incidence of two co-occurring adult parasitoids of Acalymma vittatum in New York State: Centistes (Syrrhizus) diabroticae and Celatoria setosa
• Distribution, host specificity, and overwintering of Celatoria bosqi Blanchard (Diptera: Tachinidae), a South American parasitoid of Diabrotica spp. (Coleoptera: Chrysomelidae: Galerucinae)
• Reproductive Biology ofCelatoria compressa(Diptera: Tachinidae), a Parasitoid ofDiabrotica virgiferavirgifera(Coleoptera: Chrysomelidae)
• Basic biology and small-scale rearing ofCelatoria compressa(Diptera: Tachinidae), a parasitoid ofDiabrotica virgifera virgifera(Coleoptera: Chrysomelidae)