Müller 1880:

Translation by Sherlock:

The second section, limited in the European fauna, to the genus Odontocerum, belongs to the two species whose tubes are constructed of small stones as seen in fig. 1: and 1,5 of Est. VIII (Vol. III of the Archivos). These genera will have to constitute one new, for which I consider the name of Marilia, calling the two species Marilia major (fig. 14) and Marilia minor (fig. 15). This new genus is distinguished from Odontocerum by antennas not indented, by the enormous eyes of the males (touching in the vertice of the males of the Marilia minor, and separate for one intervallo alone narrow in the ones of the Marilia major), for the ray ("radius") and the first apical sector will confluirem in azas previous as in such a way posterior, and for other characters. The two species of Marilia, whose houses I described, frequent various brooks. a third species, to that it seems, rarer, whose larvae I found in the river Itajahy. The houses to differem of the ones of the Marilia major quasi that for being only very short; therefore it is excused to give to a figure of them; have-if-ha a idéa exacta of its form imagining itself cut to the posterior half of the houses of the Marilia major. (Est. VIII, fig. 1.1, To). Alone the house of this third species that now I have, tern 6mm of length, being diameter of the entrance of 2 and of the posterior extremity (of 1, mm5. The posterior extremity is covered, corno in the other Marilia, for a transversal wall with elliptico hole in the superior part. It fulfills to notice that it substantiates it of that this wall is made and with that others are found an ace grudadas, small stones of the house, is very pale, almost without color, in how much black or medium brown dark in the two others species.

Ulmer 1907:

Translation by Sherlock:

Marilia minor (Fr. Müll.) Ulmer.
Eyes collide on the Dorsalflaeche of the heading, so that its colouring cannot be detected; with the F the surface of the heading is brown; Surface of the chest light brown, the Metanotum most brightly; first, very large, feeler member, the heading (F), which pro notum and the front portion of the Mesonotum with barks, almost white hair fills; Abdomen dark-brown to black brown; Lower surface of the Brunt yellow-brown. Feeler black-brown, to almost to the point knows small white clearly. Tracer dark-brown, like the whole heading behaart, somewhat zottig; Members of the Maxillartaster long; three first increase in length gradually, fourth are somewhat more briefly as third, the fifth member as long as this, but thinner. Labialtaster briefly, likewise closely grey-white behaart. Legs dark-yellow, the vorderbeine however, the hips and the distal ends of all Tarsalglieder more darkly; Hind legs smaller than central legs; Spur number of 2, 4, 4; Interiorspur much longer as if externalspur, that internal Apicalsporn of the Mitteltibie about three times as long as the outside; Spur the Hintertibie (at least the inside) longer than spur the Vordertibie; the Tarsen closely with black Doernchen fills. Wing (Fig. 10, 11) of the same shape and Nervatur as of Marilia the major; the Behaarung is however stronger with the M importantly, so that the forward wings numerous whitish dark-brown (the latters punctiformly, e.g. at the Pterostigma and in the 2. Apicalgabel) portions indicate; Edge lashes dark-brown the Nervatur is different not only in the Hinterfluegel, but also in the forward wing of both sexes, forward wing of the M with fork 1, 2, 5 (8 Apicaladern), that with fork of the 1, 2, 3, 5 (9 Apicaladern); Hinterfluegel of the M broad than that of the F, but only with final fork 1, during which Hinterfluegel of the F has the forks 1, 5 and 2 Apicaladern more, but however is the number of the Aualadern with larger. The veins, particularly in the Hinterfluegel of the F, are curved to z. T. very indistinctly the genital appendices (Fig. 12) yellow-brown, those long, thin, medianwaerts appendices praeanales at the end more darkly; I do not see Genitalfuehse; X segment narrowly, deeply split.
Body length: 6mm.; Wing voltage: 18mm.
1 M, bez. Espirito Santo, NO. 26; 1 F, bez. San Leopoldina, Brasil. Staudinger NO. 38, in the citizen of Berlin museum.