. Class book of economic entomology. Insects, Injurious and beneficial. [from old catalog]; Insects; Insects. Fig. 32. Fig. 33. Pig. 32.—Male reproductive organs of Gryllus pennsylvaniciis. T., Testis; Susp., suspensorium of testis; vd., vas deferens; uhr., , accessory glands on surface of seminal vesicle; ed., ejaculatory duct; , spermatophore cup; int., intromittent organ or penis. Fig. 33.—Female reproductive organs of Gryllus pennsylvanicus. Susp., Sus- pensorium of ovaries; O., ovaries; ov., ovarian eggs; od., oviduct; C, cercus; , seminal receptacle; d., duct of seminal rec
. Class book of economic entomology. Insects, Injurious and beneficial. [from old catalog]; Insects; Insects. Fig. 32. Fig. 33. Pig. 32.—Male reproductive organs of Gryllus pennsylvaniciis. T., Testis; Susp., suspensorium of testis; vd., vas deferens; uhr., , accessory glands on surface of seminal vesicle; ed., ejaculatory duct; , spermatophore cup; int., intromittent organ or penis. Fig. 33.—Female reproductive organs of Gryllus pennsylvanicus. Susp., Sus- pensorium of ovaries; O., ovaries; ov., ovarian eggs; od., oviduct; C, cercus; , seminal receptacle; d., duct of seminal receptacle; vag., vagina; be, copulatory pouch; Ovp., ovipositor. follicles of the testes. There are also usually accessory glands which secrete mucus that envelopes the spermatozoa and ova (Figs. 32 and 33)- Parthenogenesis, or reproduction without fertiHzation, occurs in many insects—in aphids, Cynips, Lasius (Ant), and some Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Lochhead, William, 1864- [from old catalog]. Philadelphia, P. Blakiston's son & co
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectinsects, bookyear1919
