. Annals of applied biology. Biology, Economic; Biochemistry. A. W. Rymer Roberts 205 as it probably only represents a portion of the clypeus it is perhaps better to adopt Henriksen's term of nasale. This also, like the mandibles, is much subject to erosion and though the three denticles are visible as a sharply pronged trident in some specimens, in others they are worn down to a level with the base. Variation appears to take place to some extent in regard to this organ, one specimen having been found bearing four denticles. Ventral to the "nasale," nearly apposed to it, and also ext
. Annals of applied biology. Biology, Economic; Biochemistry. A. W. Rymer Roberts 205 as it probably only represents a portion of the clypeus it is perhaps better to adopt Henriksen's term of nasale. This also, like the mandibles, is much subject to erosion and though the three denticles are visible as a sharply pronged trident in some specimens, in others they are worn down to a level with the base. Variation appears to take place to some extent in regard to this organ, one specimen having been found bearing four denticles. Ventral to the "nasale," nearly apposed to it, and also extending outwardly, is another chitinous process, semi-lunar in shape and bearing. Fig. 2 a. Cephalic plate of larva. b. Nasale and subnasal process from beneath. c. Anterior portion of maxilla. d. Hypopharynx. e. Nasale of larva in first instar. some seven teeth (Fig. 2 6). It does not extend so far as the nasale, the points of the teeth reaching little beyond the base of the nasale. The teeth are asymmetrically disposed and of unequal length. They may also, with the nasale, be supposed to provide a gripping surface in apposition to the mandibles. No suture has been found between the nasale and this process to indicate that it is a separate sclerite, though so much fusion appears to have taken place between the sclerites on the dorsal surface of the head, that it may possibly represent the labrum of other insects. A similar process has been found in the larva of Dichiro-. 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 the original Association of Applied Biologists; Association of Economic Biologists. [Wellesbourne, Warwick, etc. ] Association of Applied Biologists [etc. ]
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectbiochem, bookyear1921
