SPIXIANA 14 265 München,31.Oktober1991 ISSN0341-8391 A nomenclatorial note on Theseus modestusgrossi Baehr, 1989 (Insecta, Heteroptera, Pentatomidae) ByMartin Baehr Baehr, M. (1991):Anomenclatorialnoteon TheseusmodestusgrossiBaehr, 1989 (Insecta,Heteroptera,Pentatomidae). — Spixiana 14/3: 265. TheseusmodestusgrossiBaehr, 1989isajuniorhomonymoiTheseusgrossiMcDo- nald, 1988,hencethenameisreplacedbyTheseusmodestusoccidentalis, nom.nov. Dr.MartinBaehr,ZoologischeStaatssammlung,Münchhausenstraße21, W-8000München60,Germany. Inmy "ReviewoftheAustralianShield Buggenus TheseusStäl" whichappearedinSpixiana 11 (3) in 1989, I described Theseusmodestusgrossi, newsubspeciesofthewidely ranging Theseusmodestus (Stäl, 1865).Onlywhenmypaperwasprinted,IreeeivedthepaperofMcDonald(1988)inwhich The- seusgrossiMcDonaldhadbeendescribed.ThisspeciesseemstobeidenticalwithTheseuspurpurascens Baehr, 1989describedinmypapermentionedabove.Hence, TheseuspurpurascensBaehr, 1989isaju- niorsynonym, and TheseusmodestusgrossiBaehr, 1989 ajuniorhomonymofTheseusgrossiMcDo- nald, 1988.AccordingtotheInternationalCodeofZoologicalNomenclaturethenameTheseusmode- stusgrossiBaehrisherewith replaced by Theseusmodestusoccidentalis, nom nov. References - Baehr,M. 1989. ReviewoftheAustralianShieldBuggenus TheseusStäl(Insecta,Heteroptera,Pentatomidae). Spixiana11 (3):243-258 McDonald,F.J.D. 1988. Theseusgrossisp.n.(Hemiptera:Pentatomidae)fromNorthernAustralia. -J.Aust.ent. Soc.27: 131-132 265