Pronunciation: [stɪpˈɛlz] (IPA) 
The spelling of the word "stipels" may seem confusing for some, but it follows the rules of English phonetics. "Stipels" is pronounced /ˈstaɪpəlz/. The "i" in the first syllable is pronounced as "ai" due to the "e" following the "i." The second syllable has an "e" that is silent, hence the "p" followed by "l." The final "s" is pronounced as /z/ due to being the plural form of "stipel," which is /ˈstaɪpəl/.
Stipels, in the context of entomology, refers to specific structures or markings found on the wings of insects, particularly on the wings of certain beetles. The term stipels is derived from the Latin word "stipula", meaning a stalk or straw, and it is primarily used to describe small, hair-like or bristle-like structures present on the outer margin or veins of an insect's wings.
Stipels are typically arranged in pairs, evenly spaced along the wing's margin or along certain veins. They can vary in size and shape, from short bristles to longer, more slender hairs. Stipels can be rigid or flexible, and they may have different functions depending on the species of insect.
In some cases, stipels are believed to play a role in flight, particularly by reducing turbulence near the wing's margin or by stabilizing the airflow. They are thought to aid in the control and maneuverability of flying insects during flight. Additionally, stipels can serve as sensory organs, providing insects with information about their surroundings, such as air movement or changes in air pressure.
Stipels are not present on all insect wings, but their structure and positioning can be useful for entomologists in identifying and classifying different species. Their presence, absence, or specific characteristics can provide valuable clues for studying the evolutionary relationships and ecological adaptations of insects.
