. Smithsonian miscellaneous collections. ong maxillary palpiare doubled up at its sides. The broad labrum (A, Lm) tapers toa spiny point (F) ; the mandibles (present only in the female) arebladelike (D), finely toothed near the ends (H), and each is providedwith an abductor and an adductor muscle (D, 27, 28) inserted onopposite sides of an articular point (a) ; the broad hypopharynx istraversed to its tip by the salivary canal (G). The maxillae differfrom those of the mosquito in that they are suspended by a pair ofslender rods lying in the membranous posterior wall of the head(C, St) and atta
. Smithsonian miscellaneous collections. ong maxillary palpiare doubled up at its sides. The broad labrum (A, Lm) tapers toa spiny point (F) ; the mandibles (present only in the female) arebladelike (D), finely toothed near the ends (H), and each is providedwith an abductor and an adductor muscle (D, 27, 28) inserted onopposite sides of an articular point (a) ; the broad hypopharynx istraversed to its tip by the salivary canal (G). The maxillae differfrom those of the mosquito in that they are suspended by a pair ofslender rods lying in the membranous posterior wall of the head(C, St) and attached to the cranial margins below the neck rods clearly represent the stipes, or stipes and cardo, of ageneralized maxilla. The maxillary blade, or galea (E, Ga), is slender,finely serrate on its inner margin, and provided with a row of smallsubapical teeth on the outer margin (I). The theca of the broad,strong labium (C, The) bears a pair of soft labellar lobes at its end; 52 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. IO4. Fig. 21.—Head and mouth parts of Flebotomits verrucarum Towns., female. A, head and proboscis, anterior, left antenna removed. B, same, , same, posterior. D, left mandible and its muscles, anterior. E, left maxilla,anterior. F, distal end of labrum. G, distal end of hypopharynx. H, distalend. of mandible. I, distal end of maxillary galea. a, articular point of mandible; at, anterior tentorial pit; Clp, clypeus; Cvx,neck; E, compound eye; For, neck foramen; Fr, frons; Ga, galea; Lb, labium;Lbl, labellum; Lm, labrum, MxPlp, maxillary palpus; Pip, palpus; Pmt, post-mentum; sc, salivary canal; St, stipes; The, theca. Muscles.—27, abductor of mandible; 28, adductor of mandible. NO. 7 BITING AND SUCKING INSECTS^ SNODGRASS 53 proximal to its base is a small triangular plate (Pmt), probably apostmental sclerite. The musculature of the mouth parts of Flebotomus is fully de-scribed by Christophers, Shortt, and Barraud (1926). As in themosqui
Size: 1367px × 1828px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorsm, bookcentury1800, bookdecade1860, booksubjectscience
