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195
sat tenui formata, oblonga, acuminata, labro nonnihil brevior;
musculi omnino desunt.
Hypopharynx pervalida, labio perpaulo brevior, a latere
visa curvata vel recta, parte posteriore sagittiformi, lata,
deinde pius minusve angusta, durissima, superne valde
con-cava, apice trigono, acuto; margines lateral es prope post
apicem et retro in dimidio exteribre setis erectis, lenter
in-curvis, dense instructi; setæ mediæ altitudinem mediam
hypo-pharyngis plerumque longitudine attingentes.
Stipites maxillares magni, fere trianguli, partern maximam
hypostomatis explentes, partes membranaceas genarum
attingentes, membrana articularia media et superiore sat corneis;
membrana articularia inter stipites et labium parva.
Lobi maxillarum hypopharynge paulo breviores, validi,
margine superiore pius minusve membrauaceo et inflexo,
denti-bus minimis ei setis brevibus pius minusve instructi.
Palpi maxillares semper lobis manifesto breviores, aut
exarticulati aut biarticulati, musculis nullis.
Labium haustello perpaulo longius, fere totum corneum,
labellis membranaceis semper carens, pius minusve manifesto
triarticulatum, articulo primo rarissime dimidiam partern totius
labii superante, quam articulis aliis semper crassiore,
articulo secundo quam tertio longiore, apice formæ variæ; theca
labii lata et profunda, fulcro corneo, parte libera majore, hac
basi cornea, sat lata, parte terminali minore, membranacea;
lamina intermedia labellorum formå valde variabilis;
pseudo-tracheæ semper desunt. Musculi interni tenuiores.
I. Asilinæ.
Cornua pharyngis pervalida, crassissima, breviora, et post
valde dilatata, fere rotunda.
Annulus circum operculum oesophagi ante apertus.
Asilus (et genera fere omnia Asilinarum, vide p. 136-37).
Rostrum fere perpendiculare aut nonnihil obliquum, J-a
altitudinis capitis explens, rarissime altitudinem capitis æquans.
13*
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