Smithsonian miscellaneous collections . Fig. 13.—Intrafamily variation of the , Xenodusa sharpi Wasm. B, Gastrolohium bicolor (Grav.). C, Lithocharisochracea (Grav.). D, Bolitobius cincttts (Grav.). E, Larmota cingulata (Lee).F, Aplodertis linearis Lee. G, Stenns sculptilis Csy. H, Glenns flohri Shp. LAleochara lata Grav. J, Phloeocharis subtilissima Mann. K, Osorius mundus , Acylophorus Uavicollis Sachse. M, Micropeplus punctatiis Lee. N, Hypo-cypttis longicornis (Payk.). 58 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 94 The considerable variation in the form and relative size of
Smithsonian miscellaneous collections . Fig. 13.—Intrafamily variation of the , Xenodusa sharpi Wasm. B, Gastrolohium bicolor (Grav.). C, Lithocharisochracea (Grav.). D, Bolitobius cincttts (Grav.). E, Larmota cingulata (Lee).F, Aplodertis linearis Lee. G, Stenns sculptilis Csy. H, Glenns flohri Shp. LAleochara lata Grav. J, Phloeocharis subtilissima Mann. K, Osorius mundus , Acylophorus Uavicollis Sachse. M, Micropeplus punctatiis Lee. N, Hypo-cypttis longicornis (Payk.). 58 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 94 The considerable variation in the form and relative size of thelabrum is very hard to classify because of the large number of slightvariations which grade from one to the other. Figure 14 shows a fewof the types. The presence of the membranous processes, such as on. Intrafamily variation in the labrum. A, Stenus sculptilis Csy. B, Xenodusa sharpi Wasm. C, M icr ope plus punctatusLee. D, Liparocephahis brevipcnnis Makl. E, Pscudopsis obliterata Lee. F, Tany-rhinus singularis Mann. G, Lithocharis ochracea (Grav.). H, Stilicus angularisEr. I, Astenus discopunctatus (Say). ], Pinophiliis parvipennis Csy. K, Trachy-sectus confluentus (Say). L, Lathrotropis jacobina (Lee.). M, Osorius mundusShp. N, Tachinus limbatits Mels. O, Platystethns americanus Er. Osorius (fig. 14 M) and Platystethns (fig. 14 O), is definite andusable, as well as the entirely glabrous character of Stenus (fig. 14 A).The variation in the form and structure of the mandibles is ex-tremely great. Every gradation is found between massive blunt typeswith a large molar area, such as Micropeplus (fig. 15 C), and the veryslender acute type without mola, such as Astenus (fig. 15 L). In somethe terminal tooth is the only one present, as in some species of Geo- NO. 13 STAPH YLINIDAE BLACKWEL
Size: 1407px × 1775px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorsm, bookcentury1800, bookdecade1860, booksubjectscience
