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Bulletin - United States National Museum

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40 U-S. NATIONAL MUSEUM BULLETIN 257<br />

6. Males with strongly asymmetrical valvac Gatesclarkeana<br />

Right and left valva similar, though hairing may be asymmetrical . . 7<br />

7. Uncus and gnathos united into a large rounded pad, with two pairs of pending<br />

processes upon it, and with a narrow annular connection with anellus;<br />

sterigma bilobed<br />

Sycacantha<br />

Uncus not united with gnathos or absent 8<br />

8. Uncus well developed, clavate or pointed 9<br />

Uncus absent or represented by a pencil of hairs 14<br />

9. Tegumen with uncus long, gradually narrowed; valva simple, elongate-oval,<br />

moderately curved, with a rounded top.<br />

Hedya (subgenera Hedya and Platypeplus)<br />

Tegumen long, if gradually narrowed, then valva not simple 10<br />

10. Uncus pointed, gnathos very strong, porrected, with two diverging apical<br />

horns<br />

Gnathmocerodes, new genus<br />

Uncus clavate 11<br />

11. Valva narrow, cucuUus with a projection of ventral side 12<br />

Valva broad, cucuUus without a ventral projection 13<br />

12. Projection of valva subapical or postmedian Statherotis<br />

Projection of valva submedian<br />

Olethreutes<br />

13. Uncus with a fringe of spines Bactra<br />

Uncus without such fringe<br />

Phaecadophora<br />

14. Uncus represented by a pencil of hairs Cryptaspasma<br />

Uncus entirely absent 15<br />

15. Valva triangular, narrowed towards rounded top . Bubonoxena, new genus<br />

Valva elongate, dilated towards bilobate top . . Loboschiza, new genus<br />

16. Palpus in male modified, enlarged, triangular, terminal segment apparently<br />

absent, a slender black pencil of hairs from forehead . . Eucoenogenes<br />

Palpus in male not thus modified 17<br />

17. Greenish, in male basal segment of antenna thickened and notched.<br />

Peridaedala<br />

Not greenish, male antenna normal 18<br />

18. Corpus bursae in female modified, with a characteristic sclerotised upper edge.<br />

Erinaea<br />

Corpus bursae not so modified 19<br />

19. Male genitalia of olethreutine type, uncus developed; valva with large spines<br />

along edge of sacculus .... Hedya (subgenus Cellifera, new subgenus)<br />

Male genitalia of eucosmine type, uncus absent 20<br />

20. Valva with a digitoid process from disc below base of costa.<br />

Costosa, new genus<br />

Valva without such process 21<br />

21. Gnathos distinct, or reduced to lateral rods or to a membranous transverse<br />

structure 22<br />

Gnathos entirely absent<br />

Cryptophlebia<br />

22. Gnathos reduced to lateral rods, cucuUus moderate, its stalk not narrow,<br />

forewing with veins 4 and 5 separate, never connate<br />

Eucosma<br />

Gnathos membranous, cucuUus large, broadly semioval, its stalk narrow;<br />

forewing with veins 4 and 5 connate or closely approximated . Petrova<br />

23. Socii present, distinct lobes 24<br />

Socii entirely absent 25<br />

24. Sacculus broadly triangular, cucuUus narrowed at base to a stalk.<br />

Crocidosema<br />

Sacculus moderate, cucuUus not so narrowed at base . . . Strepslcrates

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