First tabulation and analysis of natural enemies of snail-killing flies (Diptera: Sciomyzidae), their position in the fly / mollusc ecosystem, and implications for use of sciomyzids in biological control Author Williams, C. D. Biological and Environmental Sciences, Liverpool John Moores University, Liverpool, UK; Author Knutson, L. Author Gordh, G. Plant Protection & Quarantine, APHIS USDA, Raleigh, NC, USA; Author Mc Donnell, R. J. Department of Crop and Soil Science, Oregon State University, Corvallis, OR, USA; Author Kula, R. Systematic Entomology Laboratory, USDA-ARS, Smithsonian Institution, Washington, DC, USA; Author Gates, M. Systematic Entomology Laboratory, USDA-ARS, Smithsonian Institution, Washington, DC, USA; Author Buffington, M. Systematic Entomology Laboratory, USDA-ARS, Smithsonian Institution, Washington, DC, USA; Author Broad, G. Department of Entomology, Natural History Museum, London, UK & Biological and Environmental Sciences, Liverpool John Moores University, Liverpool, UK; text Journal of Natural History 2025 2025-01-30 59 5 - 8 331 396 https://doi.org/10.1080/00222933.2024.2443125 journal article 10.1080/00222933.2024.2443125 1464-5262 14798887

Table 3. (Continued).

Mesoleptus variator	MGF	Tetanocera	-	Ireland	Mc Donnell and Gormally, unpub.
		ferruginea
Mesoleptus vigilatorius	HKT	Sepedon sphegea	(L) 7.viii/?	Sweden	Neff and Berg (1966)
Mesoleptus laticinctus	MGF	Tetanocera		Ireland	Mc Donnell and Gormally, unpub.
		ferruginea
Mesoleptus sp.	JFA	Sepedon sphegea	(P-38) 10.vi/?	S. France	Vala and Manguin (1987)
Mesoleptus sp. A	HKT	Dictya sp.	1.vii/?	New York	Knutson, unpub.
“	HKT	Dictya sp.	27.viii/?	Minnesota	Knutson, unpub.
“	HKT	Sepedon armipes	‘ early spring’	New York	Neff and Berg (1966)
“	HKT	Sepedon fuscipennis	(L,P) various dates	New York,	Neff and Berg (1966)
				Michigan
“	HKT	Tetanocera sp.	4.xi/?	New York	Knutson, unpub.
Mesoleptus sp. B	HKT	Pherbellia griseola	“primarily spring”	New York	Bratt et al. (1969) and Bratt, unpub.
“	HKT	Pherbellia seticoxa	(P-79) 12.iv - 18.v/?	New York	Bratt et al. (1969) and Bratt, unpub.
Mesoleptus sp. C	HKT	Pherbellia albovaria	(P-1) 27.v/?	New York	Bratt et al. (1969) and Bratt, unpub.
“	HKT	Pherbellia dorsata	(P-17) 17.vii-8.viii/?	Denmark	Bratt et al. (1969) and Bratt, unpub.
“	HKT	Pherbellia s.	(P-1) 11.viii/?	Germany	Bratt et al. (1969) and Bratt, unpub.
		schoenherri
Mesoleptus sp. D	HKT	Tetanocera arrogans	(L-1) 25.vi(3.vii)/31.vii	England	Vala and Knutson, in prep.
“	HKT	Tetanocera arrogans	(L-1) 25.vii(7.viii)/12.ix	Denmark	Vala and Knutson, in prep.
Mesoleptus sp. E	HKT	Pherbina coryleti	(P-21) 7, 9.iv/20.iv-18.iv	Italy	Knutson et al. (1975)
Mesoleptus sp. F	HKT	Tetanocera	(P-1) 5.v/?	New York	Foote, unpub.
		rotundicornis
Mesoleptus sp. G	HKT	Sepedon sp.	23.viii/?	Minnesota	Knutson, unpub.
Mesoleptus sp. 1		Ilione albiseta	24.vi/7.vii	Wales	Beaver O. (1972)
“		Tetanocera arrogans	4.xi/18.vi	Wales	Beaver (1972)
Mesoleptus sp. 3	WRMM	Anticheta	21.iii -?; 27.iv -?	New York	Knutson and Abercrombie (1977)
		melanosoma
Mesoleptus sp.	RWC	Sciomyza varia	late iv-mid vi/?	New York	Barnes (1990)
“	WRMM	Anticheta borealis	late v-mid vi/?	Ohio	Robinson and Foote (1978)
“	HKT	Tetanocera	spring/?	New York	Foote (1999)
“	CFWM	ferruginea Atrichomelina	−	New York,	Foote et al. (1960)
		pubera
Mesoleptus (declivus?)	?	Pteromicra similis		Michigan, New	Gower-Teece, unpub.
Mesoleptus n.sp. 1 Mesoleptus n.sp. 4	WRMM WRMM	Pherbellia griseola Ditaeniella humilis	− −	York − −	Bratt et al. (1969) Bratt et al. (1969)