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Photo#476232
empty casebearer moth cases on mature fruits of great water dock (Rumex britannica) - Coleophora benestrigatella

empty casebearer moth cases on mature fruits of great water dock (Rumex britannica) - Coleophora benestrigatella
Randolph, Norfolk County, Massachusetts, USA
November 21, 2010
Size: 3.5-5 mm long
Dozens of cases found on single fruiting panicle. The closely related European herb Rumex hydrolapathum, also called great water dock, reportedly hosts Coleophora hydrolapathella, a moth which also occurs in North America, according to All-Leps. The seeds within the fruits were frequently pierced and eaten.

Images of this individual: tag all
empty casebearer moth cases on mature fruits of great water dock (Rumex britannica) - Coleophora benestrigatella detached casebearer moth cases from mature fruits of great water dock (Rumex britannica) - Coleophora benestrigatella opened casebearer moth cases from mature fruits of great water dock (Rumex britannica) - Coleophora benestrigatella

Likely Coleophora benestrigatella
See the note on the guide page--and consider collecting these in the future for J-F Landry to examine. He also noted (responding to your notes below this photo): "BugGuide mentions hydrolapathella as occurring in NA, which is false (who reported this?). Its larval case, by the way, is completely different from that of therinella/benestrigatella."

Moved
Moved from Casebearer Moths.
All-Leps has many errors. Coleophora hydrolapathella is not included in the North American species list at MPG, nor is it listed in (1). The only Rumex feeder listed in (1) is C. therinella, which makes a trivalved tubular silk case and feeds on seeds. Until another North American species is discovered with these larval habits, I think it is reasonable to label your cases as C. therinella.

 
re: Moved
thanks for help

host plant in situ

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