Minnesota Pollution Control Agency, Saint Paul, Minnesota, USA 2Department of Entomology, University of Minnesota, Saint Paul, Minnesota, USA.
Division of Biology, University of Montana, Missoula, Montana, USA. .
Zootaxa. 2022 Mar 17;5116(1):123-135. doi: 10.11646/zootaxa.5116.1.6.
The adult male and female of Chironomus gelhausi n. sp. are described from a small lake in western Mongolia. Based on field observations and morphological characters, C. gelhausi is a surface-mating species which has retained the ability to fly. Morphological characteristics associated with surface-mating in this species include apically truncated wings, reduced antennal plume in the male, reduced palps, reduced mid and hind leg length, and enlarged hypopygium. Behavioral observations and morphology of C. gelhausi indicate that this species is a species of Chironomus which has independently evolved morphological characteristics consistent with surface-mating behavior similar to that of Fleuria and other species within Chironomus sensu lato. We can assume that this behavior and the associated morphological characteristics are related to survival in a harsh environment where high winds could displace aerial mating swarms from the larval habitat.
新种拟裸摇蚊（Chironomus gelhausi n. sp.）的成虫描述来自蒙古西部的一个小湖泊。基于野外观察和形态特征，C. gelhausi 是一种表面交配物种，保留了飞行能力。与该物种表面交配相关的形态特征包括翅端截平、雄性触角羽减少、触须减少、中后足长度减少和生殖节增大。C. gelhausi 的行为观察和形态表明，它是一种拟裸摇蚊属的物种，独立进化出与 Fleuria 和其他 Chironomus sensu lato 物种相似的表面交配行为相一致的形态特征。我们可以假设这种行为和相关的形态特征与在恶劣环境中生存有关，在这种环境中，大风可能会将空中交配群从幼虫栖息地中驱散。
