. Bulletin. Natural history; Natural history. Fig. 886.—Brachycentrus numerosus larva, hind leg. Fig. 887.—Micrasema rusticum larva, hind leg. Middle and hind tibiae without an apical spur, fig. 887; hind coxae without a ventral lobe; mesonotum with sclerites short and very wide, plates of metanotum only lightly sclerotized but recognized chiefly by their cluster of setae, fig. 892 Micrasema, p. 261 Pupae 1. Hook plates of fifth and sixth segments with fewer, larger hooks, fig. 888. . Brachycentrus, p. 263 VyV Vi 5A u^^m^'^'f^ ^^^^ 5P I ^ ^"^ 889 Fig. 888.—Rrachycentrus numerosus pupa, ho
. Bulletin. Natural history; Natural history. Fig. 886.—Brachycentrus numerosus larva, hind leg. Fig. 887.—Micrasema rusticum larva, hind leg. Middle and hind tibiae without an apical spur, fig. 887; hind coxae without a ventral lobe; mesonotum with sclerites short and very wide, plates of metanotum only lightly sclerotized but recognized chiefly by their cluster of setae, fig. 892 Micrasema, p. 261 Pupae 1. Hook plates of fifth and sixth segments with fewer, larger hooks, fig. 888. . Brachycentrus, p. 263 VyV Vi 5A u^^m^'^'f^ ^^^^ 5P I ^ ^"^ 889 Fig. 888.—Rrachycentrus numerosus pupa, hook plates. Fig. 889.—Micrasema rusticum pupa, hook plates. 889. Micrasema, p. 261 Adults 1. Front wings with R, suddenly arched and markedly sinuate at base of stigmal region, fig. 890 Brachycentrus, p. 263. Fig. 890.—Brachycentrus numerosus, front wing. F'g. 891.—Micrasema rusticum, front wing. Front wings with Ri only faintly sinu- ate at base of stigmal region, fig. 891 Micrasema, p. 261 Micrasema McLachlan Micrasema McLachlan (1876, p. 259j. Geno- type, here designated: Oligoplectrum morosum McLachlan. This genus is very distinct from Brachy- centrus on the basis of the larvae, but in the adults and pupae it is more difficult to make a separation. All the species of which we have larvae make round cases. Six species are known from North America; of these four are known from the eastern states, but only one has been found in Illinois. Micrasema rusticum (Hagen) Dasystoma rusticum Hagen (1868, p. 272); d', 9. MicrasemaJalcatum Banks (1914, p. 265); d^. Larva.—Fig. 892. Length 6 mm. Head yellow with brown spots, the lower part of the frons entirely brown; thoracic sclerites and legs yellowish. Frons with anterior portion wide. Case.—Length 6 mm., constructed of. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble t
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