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207

(1837-1884)
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207

Rostrum sub epistomate excavato recta porrectum,
alti-tudine capitis paulo brevius.

Haustellum labio paulo (fere J) brevius, e partibus 4,
longitudine nonnihil inæqualibus compositum.

Labrum quam partes aliæ haustelli multo latius altiusque,
hypopharynge vix longius, per § longitudinis altior, deinde ad
apicem a latere visum acutum sensim humilius, basi latiuscula,
sensim angustius, apice, supra inspecto, obtuso, rotundato,
parte tertia basali in dorso et lateribus membranacea, parte
reliqua cornea; epipharynx longitudine labri, præter partes
laterales basales duras tenuiter cornea, per longitudinem totam
f tubi formans; musculus depressor labri adesse videtur;
musculi ad epipharyngem nulli.

Hypopharynx firmitatis mediæ, longitudine labri, angusta,
a latere visa perpaulum sursum arcuata, superne nonnihil
con-cava, apice acuminato, parte terminali letter deorsum arcuata.

Stipites maxillares minores, oblongi, trianguli, in incisuris
lateralibus hypostomatis siti; musculi verisimiliter ut in Thereva.

Lobi maxillarum hypopharynge \ breviores, angusti, nudi,
apice acuminato, vitta inferiore dura, margine superiore latiore,
membranaceo.

Palpi maxillares longitudinis loborum, biarticulati, articulo
primo quam secundo paulo breviore, tereti, articulo secundo
latiore, ad apicem rotundatum versus compresso.

Labium haustellum £ superans, gracilius, maximam partern
integumentis membranaceis; scutum oblongum, angustius,
corni-bus non manifestis; labella articulo primo labii paulo longiora
et multo crassiora, producte ovata, apice rotundato; lamina
articuli secundi parva, fere ut in Tabano; lamina propria
labelli linearis, longa, a basi labelli per duas tertias partes
labelli antrorsum et paulum sursum directa; lamina lateralis
labelli cum apice laminæ propriæ coalita, retro et deinde
sursum ad marginem superiorem labelli directa, linearis; theca
labii sat profunda, fulcro duro, producte cordato, stilis per
partern majorem posteriorem latis, pervicinis, ante angustis,
cum fulcris labellorum linearibus coalitis; labella infra et post
coalita; pseudotracheæ inultæ adsunt.

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