The word is "apterous," new to me and found in the second paragraph of his story "` That in Aleppo Once … '". From Wordnik.com. [Anecdotal Evidence] Reference
In the thoracic segments, located about a third of the way down from the head, certain neuroblasts generate four neurons called the Ap (for "apterous") cluster, distinguished from other neurons by the expression of a specific set of transcription factors. From Wordnik.com. [PLoS Biology: New Articles] Reference
Collembola: an ordinal term applied to species which are apterous; have no metamorphoses; have variably developed abdominal saltatorial appendages and a peculiar ventral tube at base: the spring-tails. From Wordnik.com. [Explanation of Terms Used in Entomology] Reference
(Scarabaeoidea, Geotrupinae) is an apterous dung beetle species endemic to the southern Iberian Peninsula. From Wordnik.com. [PLoS ONE Alerts: New Articles] Reference
On a less elevated level, "apterous jerks" brings to mind writers of leaden prose whose words never take wing. From Wordnik.com. [Anecdotal Evidence] Reference
However, in Thorectes wing muscles are atrophied because these species are apterous, having lost their capacity to fly. From Wordnik.com. [PLoS ONE Alerts: New Articles] Reference
But why these apterous insects should that day take such a wonderful aerial excursion, and why their webs should at once become so gross and material as to be considerably more weighty than air, and to descend with precipitation, is. From Wordnik.com. [The Natural History of Selborne, Vol. 2] Reference
The cliff is an apterous insect. From Wordnik.com. [Braulio Arenas] Reference
I must thank you for your paper on apterous lepidoptera (433/2. From Wordnik.com. [More Letters of Charles Darwin — Volume 2] Reference
82-7, gives the case of apterous insects, but I remember I worked out some additional details. From Wordnik.com. [More Letters of Charles Darwin — Volume 1] Reference
Hydrometra, and Velia are mostly found perfectly apterous, though occasionally with full-sized wings. ". From Wordnik.com. [Darwinism (1889)] Reference
Weir on apterous. From Wordnik.com. [More Letters of Charles Darwin — Volume 2] Reference
A large apterous species. From Wordnik.com. [Journals of Two Expeditions of Discovery in North-West and Western Australia, Volume 2] Reference
Coleoptera, apterous form of Madeira. From Wordnik.com. [More Letters of Charles Darwin — Volume 2] Reference
An apterous (or apteral) insect is wingless. From Wordnik.com. [Anecdotal Evidence] Reference
"Lice are no doubt to be regarded as bugs, simplified in structure and lowered in animal life in accordance with their mode of living as parasites, being small, flattened, apterous, myopic, crawling and climbing, with a conical head, moulded as it were to suit the rugosities of the surface they inhabit, provided with a soft, transversely furrowed skin, probably endowed with an acute sense of feeling, which can guide them in that twilight in which their mode of life places them. From Wordnik.com. [Our Common Insects A Popular Account of the Insects of Our Fields, Forests, Gardens and Houses] Reference
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