Lyonetiid Moth

head (anterior)

HW usually without a discal cell, and costal margin humped slightly near base. FW generally without an accessory cell, but if one is present (Parornix) it is less than H as long as discal cell and there are 5 veins extending from discal cell to costal margin of wing. Venation of FW usually reduced, with 8 or fewer veins extending from discal cell to wing margin, not more than 4 of which normally extend to costal margin.

This is a large group, with over 200 N. American species. Larvae are leaf miners, and usually make blotch mines. Larvae of Phyllocnistis make narrow winding mines containing a dark central line of excrement; P. populiella Chambers is a common species attacking aspens and poplars.

OINOPHILID MOTHS Family Oinophilidae Not illus.

Identification: Very small, strongly flattened moths. Head smooth-scaled. R5 in FW, when present, extends to costal margin of wing.

Our single oinophilid occurs in Mississippi and Louisiana. It is brownish gray, with a wingspread of about 9 mm. Larvae feed on fungi and decaying plant materials.

DIAMONDBACK MOTHS Family Plutellidae Identification: Small moths with wings narrowly rounded at aj>ex and HW about as wide as FW. Rs and Mi in HW stalked or very close together in basal of their length. Head smooth-scaled. R4 and R5 in FW not stalked.

The front wings of these moths are often brightly patterned; light marks along costal margin of the wing in some species form diamond-shaped spots when the wings are folded over the abdomen. Larvae of most species are leaf miners or leaf tiers; a few are pests of garden plants.

DOUGLASIID MOTHS Family Douglasiidae Identification: Small moths. HW without a discal cell, R vein near middle of wing with a branch to costal margin at about % the wing length; R5 in FW, when present, free from R4 but stalked with M1. Ocelli very large.

Only 4 species of douglasiids occur in N. America. Larvae are leaf miners.

CASEBEARERS Family Coleophoridae Identification: Small to minute moths. Discal cell of FW oblique, its apex much closer to hind margin of wing than to costal margin. R2 in FW rises about halfway between R\ and R3, but not at apex of discal cell. Front tibiae slender, without a movable pad on inner surface.

About 100 species of casebearers occur in N. America, and some are fairly common. Young larvae are usually leaf miners,

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