. Bee flies of the world: the genera of the family Bombyliidae. Bombyliidae; Parasites. BOMBYLIIDAB 49. Text-Figure 10.—Lateral aspect of the thorax of a bombyUid, Antonia suavissima Loew. Explanation: 1. mesonotum 2, scutellum; 3, postalar callosity; 4, humerus or humeral callosity; 5, anterior spiracle; 6, mesopleuron; 7, pteropleuron 8, metapleuron; 9, posterior spiracle; 10, metasternum, 11, posterior metasternum; 12, first tergite; 13, second tergite 14, halter; 15, metanotum; 16, hypopleuron; 17, mesosternum or sternopleuron; 18, prosternum; 19, notopleuron 20, anterior metapleuron. the
. Bee flies of the world: the genera of the family Bombyliidae. Bombyliidae; Parasites. BOMBYLIIDAB 49. Text-Figure 10.—Lateral aspect of the thorax of a bombyUid, Antonia suavissima Loew. Explanation: 1. mesonotum 2, scutellum; 3, postalar callosity; 4, humerus or humeral callosity; 5, anterior spiracle; 6, mesopleuron; 7, pteropleuron 8, metapleuron; 9, posterior spiracle; 10, metasternum, 11, posterior metasternum; 12, first tergite; 13, second tergite 14, halter; 15, metanotum; 16, hypopleuron; 17, mesosternum or sternopleuron; 18, prosternum; 19, notopleuron 20, anterior metapleuron. the antenna tends to be rather long and slender with the first and third segment of nearly equal length. The second segment is always small and beadlike in nearly every genus; Neosardus Roberts is an exception. The third segment may end without a style, or have a conspicuous one as in Othniomyia Hesse. Moreover, as a marked exception, Prorachthes Loew has the third segment rather widely dilated. The third segment fre- quently has one or two small microsegments at the apex, and sometimes an apical, or subapical spine set within a cup. The third segment is occasionally more or less plumose. The style has a whorl of hairs at the apex in the Anthracinae. The thorax in this family is usually quadrate, and widest posteriorly, but may be a trifle longer or shorter. Except in the Toxophorinae, where it forms a conspicu- ous collar, the pronotum is lower than the level of the prominent mesonotum which abuts against the upper occiput. The mesonotum itself is usually only slightly convex, but may be strongly arched anteriorly, and in some genera it is conspicuously humped; in such species the pleuron tends to be compacted and high vertically. Surface of mesonotum with usually only simple pile, often long and dense but looser, more scattered and thinned when scales are also present as in Anthracinae and various other genera. Bristles often present on prealar, supraalar, and postalar areas, a
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Keywords: ., bookcentury1900, bookcollectionbiodiversit, booksubjectparasites
