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492-
posttergis productis, quam annulis manifeste angustioribus.
Annulus nonus abdominis longitudine ferme annuli octavi,
cQnicus, obtusus, utrinque undulate repandus, in exemplis
repletis sæpissime æquatus. Scuta corporis præter
prothoracica nulla. Scuta dorsalia protboracis discreta, valde
an-gusta, in angulum obtusum fracta, ramo priore lineari,
po-steriore acuto. Scuta ventralia protboracis etiam discreta,
transverse linearia, margine repando; pars exterior dimidia
leviter dilatata, costis obliquis acute elevatis armata
ramum-que posteriorem a basi interiore emittens longum, rectum,
gracillimum, acutum.
Spiracula breviter ovata, prothoracica reliquis duplo
ma-jora. Atrium respiratorium rotundatum, ante rimas
respira-torias situm. Peritrema post rimas in pateram amplam
expansum.
Hab! in cuniculis larvarum xylophagarum.
H.
Instrumenta cibaria secundi et tertii paris mobilia, detecta.
Hypostoma evanidum.
Pedes brevissimi, rasorii; tarsi unguliformes.
Mandibulæ penicillo manifesto.
Ocelli duo, in adultis sæpissime obscuri.
Spiracula peritrcmale anguslo, rimis respiratoriis spiraculum
tolum pertundenlibus.
Instrumenta cibaria secundi et tertii paris in cavernam
planiusculam, plerumque carinate marginatam, pieuris capitis
formatam retractilia, membrana articularia plerumque scutis
minutis duabus, tribus quatuorve tecta. Cardines maxillares
evanidi. Stipites maxillares obovati. Maia interior
maxil-larum lata, triangula, dense barbata, barba penicillata; mala
exterior palpiformis, biarticulata. Palpi maxillares
triarticu-lati, breves, conici, stipite brevi, obconico, formå et
magni-tudine cum articulo primo palporum plerumque conveniente,
membrana articularia sæpius conice eminente, articulum simu-
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