Blue dots indicate deployment and collection sites of lab-reared and wild egg masses in northern Utah, 2017-2019. Trissolcus japonicus was discovered at Sites 1 and 17. Geographical coordinates are as follows: Site 1: 40°46'14.8"N, 111°51'18.6"W; Site 2: 41°3'36.899"N, 112°0'46.944"W; Site 3: 41°45'48.39"N, 111°48'46.148"W; Site 4: 41°44'11.685"N, 111°49'14.446"W; Site 5: 41°43'41.968"N, 111°49'4.005"W; Site 6: 41°11'9.164"N, 112°2'25.368"W; Site 7: 41°1'18.787"N, 111°55'59.663"W; Site 8 40°16'07.6"N, 111°39'20.7"W; Site 9: 41°01'12.2"N, 111°55'49.4"W; Site 10: 40°59'44.2"N, 111°53'09.8"W; Site 11: 40°45'08.2"N, 111°52'25.2"W; Site 12: 41°44'32.9"N, 111°48'32.8"W; Site 13: 41°03'37.0"N, 111°58'13.8"W; Site 14: 40°46'03.3"N, 111°49'27.5"W; Site 15: 41°01'13.1"N, 111°56'12.9"W; Site 16: 40°46'23.0"N, 111°52'07.3"W; and Site 17: 40°46'49.3"N, 111°53'46.5"W.

 
  Part of: Holthouse MC, Schumm ZR, Talamas EJ, Spears LR, Alston DG (2020) Surveys in northern Utah for egg parasitoids of Halyomorpha halys (Stål) (Hemiptera: Pentatomidae) detect Trissolcus japonicus (Ashmead) (Hymenoptera: Scelionidae). Biodiversity Data Journal 8: e53363. https://doi.org/10.3897/BDJ.8.e53363