Tachinaephagus zealandicus

Tachinaephagus zealandicus can be distinguished from similar encyrtid parasitoids by its association with dipteran hosts in carrion habitats and its gregarious development pattern. Specific morphological diagnostic features are not detailed in available sources. Identification to species level typically requires examination of microscopic characters and is confirmed through host association and geographic distribution records.

Associated with decomposing carrion and synanthropic environments where dipteran hosts develop. Host location behavior is mediated by odour cues from liver substrates following host interaction, with attraction dependent on stage of meat decay. Not attracted to liver that has never been in contact with hosts.

Recorded from Azores (Pico, Terceira), California, Corse, Britain, Pennsylvania, U.S., and Denmark. Distribution appears cosmopolitan in association with human-modified environments and synanthropic fly hosts.

• Musca domestica - hostlaboratory host, larval-pupal parasitoid
• Calliphora albifrontalis - hostforensically important carrion fly
• Calliphora dubia - hostforensically important carrion fly
• Lucilia sericata - hostforensically important carrion fly
• Chrysomya rufifacies - hostforensically important carrion fly
• Chrysomya megacephala - hostforensically important carrion fly

Gregarious larval-pupal endoparasitoid. Under laboratory conditions at 25°±2°C, life cycle lasts 23–27 days. Development accelerates with higher parasitoid densities per host. Single standardized hosts produce 3–18 adult parasitoids. Temperature-dependent development occurs between 15°C and 27°C; no adult emergence at 30°C. Upper developmental threshold estimated at 29.90–31.73°C, lower threshold at 9.73–10.08°C, optimum at 25.81–27.05°C.

Females demonstrate innate response to and preference for odours from liver substrates following host interaction, with attraction dependent on stage of meat decay. No attraction to liver without prior host contact. In olfactometer trials, absence of odour stimulus elicits limited movement; presence of odour stimuli increases activity. When presented with two odour options, females show heightened investigation response with movement across all regions. Adult emergence displays circadian rhythmicity independent of photoperiod over 3+ days.

Biological control agent of synanthropic Diptera. Parasitoid of carrion-associated flies with potential to influence population dynamics of muscoid flies in decomposing organic matter. Presence on decomposing remains has forensic application for estimating time since death.

Significant forensic entomology applications: presence on decomposing remains can be used to estimate time since death. Potential use in biological control of muscoid flies. Subject of extensive laboratory research on host-parasitoid interactions, temperature-dependent development, and host location behavior. First recorded from fly hosts developing on burnt remains in Pennsylvania.

• Muscidifurax raptorellusAlso a gregarious parasitoid of muscoid flies, but belongs to family Pteromalidae rather than Encyrtidae; differs in taxonomic placement and presumably morphological characters
• Trichopria nigraGregarious muscoid fly parasitoid in family Diapriidae; differs in family-level classification and associated morphological traits

• parasitoid
• forensic entomology
• biological control
• synanthropic
• carrion-associated
• gregarious
• Hymenoptera
• Encyrtidae
• Diptera parasitoid

• BugGuide
• GBIF taxonomy match
• iNaturalist taxon
• NCBI Taxonomy
• Catalogue of Life
• Encyrtid Holdings | Entomology Research Museum
• BIOLOGY OFTACHINAEPHAGUS ZEALANDICUS(HYMENOPTERA: ENCYRTIDAE), PARASITOID OF SYNANTHROPIC DIPTERA
• Aspectos da Biologia de Tachinaephagus Zealandicus Ashmead (Hymenoptera:Encyrtidae), parasitoide de larvas de dipteros sinantropicos
• The status of the parasitoid wasp Tachinaephagus zealandicus Ashmead, 1904, (Chalcidoidea: Encyrtidae) in Britain
• Status of Tachinaephagus zealandicus (Hymenoptera: Encyrtidae), a Larval Parasitoid of Muscoid Flies, in the U.S. and Denmark
• Temperature‐dependent development of the parasitoid Tachinaephagus zealandicus on five forensically important carrion fly species
• Influence of Feeding Treatment, Host Density, Temperature, and Cool Storage on Attack Rates ofTachinaephagus zealandicus(Hymenoptera: Encyrtidae)
• Status of Tachinaephagus zealandicus (Hymenoptera: Encyrtidae), a larval parasitoid of muscoid flies, in the U.S. and Denmark
• First Record of the Larval EndoparasitoidTachinaephagus zealandicus(Hymenoptera: Encyrtidae) From Fly Hosts Developing on Burnt Remains and in Pennsylvania
• Host Ranges of Gregarious Muscoid Fly Parasitoids:Muscidifurax raptorellus(Hymenoptera: Pteromalidae),Tachinaephagus zealandicus(Hymenoptera: Encyrtidae), andTrichopria nigra(Hymenoptera: Diapriidae)
• Host location and behavioural response patterns of the parasitoid, Tachinaephagus zealandicus Ashmead (Hymenoptera: Encyrtidae), to host and host‐habitat odours
• Effects of <I>Nosema</I> Disease on Fitness of the Parasitoid <I>Tachinaephagus zealandicus</I> (Hymenoptera: Encyrtidae)
• A new host record forTachinaephagus zealandicus [Hym.: Encyrtidae]