. Occasional papers of the California Academy of Sciences. their flighthas little or no adaptive value. Wing pigmentation Apparently pigmentation of embiid wings alwaysis confined to the upper membrane, the ventral beingcompletely hyaline except for dark imprints of theblood sinuses. Alternating longitudinal dark stripesand hyaline intervals, although faint in some species,are characteristic features of the upper membrane ofall embiid wings except possibly those of Burmitem-bia venosa Cockerell, an Eocene (?) amber fossil fromBurma. The veins and/or their macrotrichiae are centeredin the dark
. Occasional papers of the California Academy of Sciences. their flighthas little or no adaptive value. Wing pigmentation Apparently pigmentation of embiid wings alwaysis confined to the upper membrane, the ventral beingcompletely hyaline except for dark imprints of theblood sinuses. Alternating longitudinal dark stripesand hyaline intervals, although faint in some species,are characteristic features of the upper membrane ofall embiid wings except possibly those of Burmitem-bia venosa Cockerell, an Eocene (?) amber fossil fromBurma. The veins and/or their macrotrichiae are centeredin the dark stripes; the intensity, width and marginaldefinition of which are consistent within a melanization correlates with the overallpigmentation of the male. In arid regions many spe-cies disperse noctumally and generally are pale tanwith wings correspondingly pale with faint venalstripes and broad hyaline intervals, the margins ofwhich are often indefinite and irregular. ROSS: EMBIA, BIOSYSTEMATICS OF THE ORDER EMBIIDINA. PART I 31. MA, MA, Figure 27. Wings of Archembia n. sp. (Embiidaej showing narrow hyaline stripes and broad anal area (a plesiomorphiccondition). RBS
Size: 1922px × 1300px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, booksubjectscience, bookyear1890
