. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. BIOLOGY OF SOME COMMON LAMPYRID^. 6l gated stipes (St), which also bears several long bristles and many shorter setae. Anterior of the stipes on the external side is a stout four-segmented palpus, the maxillary palpus (MP), bearing several forward projecting setae. At the side of the maxillary palpus, internally, is the two-segmented galea (G) of the maxilla, which resembles very much in appearance a two- segmented palpus. Beside the galea, internally and also extend- ing a short distance along the stipes, is the rather dens
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. BIOLOGY OF SOME COMMON LAMPYRID^. 6l gated stipes (St), which also bears several long bristles and many shorter setae. Anterior of the stipes on the external side is a stout four-segmented palpus, the maxillary palpus (MP), bearing several forward projecting setae. At the side of the maxillary palpus, internally, is the two-segmented galea (G) of the maxilla, which resembles very much in appearance a two- segmented palpus. Beside the galea, internally and also extend- ing a short distance along the stipes, is the rather dense chitinized flattened lacinia (L). Both the galea and lacinia bear many setae, and along the inner margin of the lacinia is a row of rather stiff bristles. The tip of the galea ends in short setae, which probably function as specialized sense organs. On the ventral side of the labium, the submentum (SM) appears much elongated and it lies in the central region of the mouth-parts. It bears numerous short setae and a few long bristles. The mentum (M) is in the form of a thickened bi-lobed struc- ture, from which project anteriorly the two-segmented labial palpi (LP). Both structures bear a considerable number of anteriorly projecting setae and bris- tles. On the underside, the sclerites of FIG. 12. Photums pennsyi- the maxillae, labium and lacinia are in- vanica larva- hypopharynx. ... ... dorsal view. distinct, though in this region there are numerous small anteriorly projecting setae. The hypopharynx (Fig. 12) is triangular in shape with the anterior portion bi-lobed. It is entirely covered with a dense mass of anteriorly projecting setae, except along its basal portion. The setae of the anterior half are much denser and longer, and many of them are branched. From the previous description of the mouth-parts, it is evident that there are numerous setae projecting forward inside of the mouth region. These setae, according to Haddon (1915) and Vogel (1915), function as a strainer
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
