. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. INTERLOCKING MECHANISMS IN COLEOPTERA. 297 [d) Interlocking Mcclianisms found in Jliymalns. Thymalus marginicollis is one of the trogositid beetles ; it has the same general form as a lady beetle, but it is still better adapted in form of body for clinging to a surface after the man- ner of a limpet. The dorsal view of the body is a nearly perfect broad oval showing simply the pronotum and elytra with a small portion of the head. The flange on the edge of the elytron (seen at /in Fig. 9) fits closely against the surface on w
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. INTERLOCKING MECHANISMS IN COLEOPTERA. 297 [d) Interlocking Mcclianisms found in Jliymalns. Thymalus marginicollis is one of the trogositid beetles ; it has the same general form as a lady beetle, but it is still better adapted in form of body for clinging to a surface after the man- ner of a limpet. The dorsal view of the body is a nearly perfect broad oval showing simply the pronotum and elytra with a small portion of the head. The flange on the edge of the elytron (seen at /in Fig. 9) fits closely against the surface on which the beetle is resting. The adult beetles are commonly found during the. Fig. 9. Xioo. Thymalus. Copied from Breed, ,. Similar to Figs. S and 12. early part of the summer lurking about the shelf fungi which have served their larvs as food. The four general methods of fastening the elytra in place which were mentioned above are all functional in this beetle. The co- adaptation between the body and the elytra is so perfect that it is nearly impossible to unclasp the elytra in a dead specimen with- out tearing 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 Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass. : Marine Biological Laboratory
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