. Occasional papers of the California Academy of Sciences. Figure 35. Neotenic, completely apterous adult male ofHaploembia solieri (Oligotomidae) (slide preparation, bodylength mm). Endemic to the Mediterranean ; tong-like mandibles for grasping head of femalesduring Figure 36. Neotenic apterous adult male of Electwembiaantiqua (Pictet) (Embiidae). Baltic Amber, Hamburg Geo-logical Museum, body length about mm. This fossildemonstrates antiquity of neoteny in males and close re-semblance to modem species. full wing pad development and no trace of pads what-soever.
. Occasional papers of the California Academy of Sciences. Figure 35. Neotenic, completely apterous adult male ofHaploembia solieri (Oligotomidae) (slide preparation, bodylength mm). Endemic to the Mediterranean ; tong-like mandibles for grasping head of femalesduring Figure 36. Neotenic apterous adult male of Electwembiaantiqua (Pictet) (Embiidae). Baltic Amber, Hamburg Geo-logical Museum, body length about mm. This fossildemonstrates antiquity of neoteny in males and close re-semblance to modem species. full wing pad development and no trace of pads what-soever. All this is probably due to different levels ofsecretion and timing of juvenile hormone. In somespecies there may be percentages of apterous,subapterous, micropterous and alate males within aspecies population, or in those of certain geographicpopulations of a single species. In arid environments apterous males are morelikely to remain within the parent colony, mate witha sister, and thereby inbreed the wingless trend orcondition. Because of their greater ease of move-ment, apterous males should survive in greater num-bers and eventually male apterism could becomeuniversal within a given population. Conversely, indamper, more benign environments, any trend towardmale apterism might b
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectscience, bookyear1890
