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Volume 57, 1927
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Lepidoptera Homoneura.
Micropterygidae (Figs. 1 to 4)

The Micropterygidae is the only family of Lepidoptera in which the five main parts of the maxillae are present. In all the others at least one part, the lacinia, is missing. I have been able to examine all the genera belonging to this family. There is little difference between the groups, but it will be seen from figures 2, 3 and 4 that the cardo in Epimartyria is broader and more triangular than in Sabatinca, while in Micropteryx it is irregularly oblong. The lacinia in Sabatinca is of a more primitive type than in the other two genera, being acutely pointed and closely appressed to the galea. The galea consists of one segment only, but indentations and one or two half bands of stronger

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Fig. 1.—Sabatinca incongruella Walk. Head; a, dorsal view; b, ventral view.

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chitinisation near the middle of the organ possibly point to a former articulation. On both lacinia and galea are some short fine sensory hairs. The palp consists of five segments; the first two are of about the same length, the third a little longer than the second, the fourth about as long as the second and third together, and the fifth very short, about half the length of the first. In Micropteryx and Sabatinca the fourth segment is covered, except near the base, with fine annulations, but these do not appear to be present in Epimartyria. The proportionate length of the whole organ as compared with the labial palps and head can be seen by reference to fig. 1.

Species examined: Sabatinca incongruella Walk., S. chrysargyra Meyr., S. aurella Huds., S. ianthina Philp., Micropteryx aruncella Scop., M. calthella L., Epimartyria auricrinella Wlshm., E. pardellu Wlshm.