. Blood-sucking mosquitoes of the subtribe Culisetina (Diptera, Culicidae) in world fauna. Mosquitoes. 36. Fig. 22. Structure of the genital appendages in males (after Rubtsov, 1951). a—Gonacrosternum; gm—gonepimeron; gs—gonostyle; gf—gonofurca; gcx—gonocoxite; cp—coxopleurite; pi, pi—anterior and posterior para- meres; st—gonosternite; ph—phallus and cer—cercus. Roman numerals represent the tergites (t) and Arabic numerals the sternites (s). The studies of several investigators show that the ninth genital segment is entirely homologous to the schematized thoracic segment excluding, however, t
. Blood-sucking mosquitoes of the subtribe Culisetina (Diptera, Culicidae) in world fauna. Mosquitoes. 36. Fig. 22. Structure of the genital appendages in males (after Rubtsov, 1951). a—Gonacrosternum; gm—gonepimeron; gs—gonostyle; gf—gonofurca; gcx—gonocoxite; cp—coxopleurite; pi, pi—anterior and posterior para- meres; st—gonosternite; ph—phallus and cer—cercus. Roman numerals represent the tergites (t) and Arabic numerals the sternites (s). The studies of several investigators show that the ninth genital segment is entirely homologous to the schematized thoracic segment excluding, however, the wing sclerites. Rubtsov (1948, 1951, 1953) recorded that the following individual sclerites, not including the phallus, could be distinguished in the ninth segment of dipterans (Fig. 22). Tergal sclerites take the form of acrotergite and tergite proper (IXt). The sternal portion of the segment consists of a single gonacrosternum (a), a. single sternite proper—gonosternite (st) and the bifurcated gonofurcosternite (gf), each lobe of which carries the anterior and posterior parameres (p\, 2). Pleural sclerites, four on 34 each side, are represented by gonepisternites extending toward the sternite and gonepimerites (gm) located close to the tergite; the third gonopleural sclerite, coxopleurite (cp), homologous to trochanter, is articulated to them and the gonocoxite (gcx) is articulated to the cp. The [cercus] (cer) is a homolog of the coxae of the thoracic region. The ninth segment includes the phallus (penis) (ph), which is a fairly complex organ with no homolog in the other segments of the insects. Considering the work done on Culisetina mosquitoes, it can be shown conclusively that the main, if not all, sclerite elements are homologous to the typical thoracic segment represented in the struc- ture of the hypopygium (Fig. 23). Only a tergite proper, that is, a. Please note that these images are extracted from scanned page images that may have been digit
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Keywords: ., bookcentury1900, bookcollectionbiodiversi, booksubjectmosquitoes
