Species Nadata oregonensis - Hodges#7916

7916

Nadata oregonensis (Butler, 1881)

Nadata doubledayi var. oregonensis Butler, 1881

Powell and Opler (2009) state Nadata oregonensis is similar to Nadata gibbosa but the forewing has a yellowish patch in the discal cell and the postmedian line curves slightly basal at the inner margin. (This is not a reliable diagnostic feature.) The forewing of N. oregonensis appears more blotchy. (1)

Nadata oregonensis, the postmedian line curved basally at inner margin.

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Nadata gibbosa, the postmedian line does not curve basally at inner margin. (This is contradicted by MONA Fascicle 22.1A (2) which shows 6 spread specimens of oregonensis, none of which show a pm. line curving basally at the inner margin and several gibbosa which do to varying degrees.)

Hypothetical: Throughout the range of N. gibbosa, on barcoded examples illustrated on BOLD, the white reniform dots are invariably round or only slightly oval. On the few examples of N. oregonensis on BOLD and many images in the California range of the genus (many presumed to be oregonensis), one or both white reniform dots are elongated perpendicular to the costa, showing more as a "comma" mark than a circular dot. This distinction is evident in most of the spread examples of oregonensis illustrated in the recent MONA fascicle.(2) This potential distinction (i.e., IF a moth has comma-shaped dots, it is oregonensis) needs further investigation on adults confirmed by genitalic examination and/or barcoding.

Nadata oregonensis is found from central California to Washington and the two species do overlap.

Butler, A.G. 1881 An account of the Sphinges and Bombyces collected by Lord Walsingham in North America during the years 1871-72. The annals and magazine of natural history including zoology, botany, and geology. (5)8: 317

Moth Photographers Group (MPG) (3)

The Barcode of Life Data Systems (BOLD) (4)

Butterflies and Moths of North America (BAMONA)(5)

Pacific Northwest Moths (PNM) (6)