21
Order—L epidoptera
Characterised by the flat coloured scales clothing the four mem-branous wings, the peculiar type of neuration, and the tubulartongue-like structure of the maxillae. A very few Trichopterashow similar scales, but can be distinguished by neuration andmouth parts. The order is divided into nine main groups,which may be tabulated as follows :—
1. Cell of hind wings emitting more than 6 veins
9. Micropterygina.
,, ,, not emitting more than 6 veins 2.
2. Hiudwings with lc absent . . .3.
,, „ lc present . . .8.
3. Antennae terminally clavate (clubbed) 4. Papilionina.
,, not terminally clavate . . .4.
4. Neuration much degraded . 8. Tineina (part).
„ not much degraded . . .5.
5. Hindwings with lb rather strongly furcate
7. Tortricina (part).
„ „ lb indistinctly or not furcate . 6.
6. Forewings with 5 basally approximated to 4 . 7.
,, ,, 5 parallel to 4, or approximated
to 6 . 2. Notodontina.
7. Frenulum present; 8 of hindwings remote from 7
1. Caradrinina.
,, absent; or 8 of hindwings approximated
to 7 beyond cell . 3. Lasiocampina.
8. Middle-spurs of posterior tibiae very short or absent
6. Psychina (part).
„ (or at least one) well-developed . 9.
9. Wings divided terminally into segments
5. Pyralidina (part).
„ not divided into segments . . 10.