Abstract
Psychoronia costalis (Banks 1901) (Trichoptera: Limnephilidae) is a sexually dimorphic caddisfly occurring in cool to cold mountain seeps and shallow, slow headwater streams in Colorado, New Mexico, and Utah. This publication reports the results of an autecological study of a caddisfly species occurring abundantly along the Colorado Front Range. In Colorado this limnephilid has an altitudinal range of about 2350–3630 m amsl. Adult females are brachypterous and flightless. Adult males are macropterous and weakly aerial. This univoltine species is typical of the order, having development stages of fertilized eggs, 5 larval instars, pupae, and adults. Suitable seep and headwater habitats usually contain various species of liverworts, mosses, and emergent macrophytes used by P. costalis for resting, courtship, copulation, oviposition, and development of larvae and pupae.
Psychoronia costalis (Banks, 1901) (Trichoptera: Limnephilidae) es una mosca tricóptera que presenta dimorfismo sexual y habita en filtraciones de montaña y en arroyos fríos poco profundos y lentos de Colorado, Nuevo México y Utah. En esta publicación se presentan los resultados de un estudio autoecológico de una especie de la mosca tricóptera que abunda a lo largo de la Cordillera Frontal de Colorado. En Colorado, este limnefílido tiene un rango altitudinal de 2350 a 3630 m sobre el nivel del mar. Las hembras adultas son braquípteras y no vuelan, mientras que, los machos adultos son macrópteros y débilmente aéreos. Esta especie univoltina es típica del orden, con fases de desarrollo que incluyen huevos fecundados, cinco estadios larvarios, pupas y adultos. Los hábitats apropiados de filtraciones y cabeceras de agua suelen contener varias especies de hepáticas, musgos y macrófitos emergentes que se utilizan para el descanso, el cortejo, la cópula, la oviposición y el desarrollo de larvas y pupas.
Recommended Citation
Herrmann, Scott J.; Herrmann, Joan M.; Herrmann-Hoesing, Lynn M.; Herrmann-Murron, Susan B.; and Herrmann, Catherine M.
(2025)
"Pictorial life history and ecological aspects of Psychoronia costalis (Banks, 1901) (Trichoptera: Limnephilidae) from the Colorado Front Range, USA,"
Western North American Naturalist: Vol. 85:
No.
4, Article 7.
Available at:
https://scholarsarchive.byu.edu/wnan/vol85/iss4/7
Real-time color video (MP4, 7.4 MB) of male and female Psychoronia costalis in copula and walking.
85.4.7 Supplementary Material 2.mp4 (9791 kB)
Real-time video (MP4, 9.8 MB) showing both sexes of Psychoronia costalis walking separately.
85.4.7 Supplementary Material 3.mp4 (5649 kB)
Real-time video (MP4, 5.7 MB) of Psychoronia costalis showing female walking on a bryophyte bed followed by female quiescent on a piece of wood.
85.4.7 Supplementary Material 4.mp4 (7869 kB)
Real-time video (MP4, 7.9 MB) of Psychoronia costalis showing coupling of mating pair with secondary frenzied male attempting to cut in and interrupt successful copulation.
85.4.7 Supplementary Material 5.mp4 (4185 kB)
Real-time video (MP4, 4.2 MB) of Psychoronia costalis showing frenzied male with curved abdomen.
85.4.7 Supplementary Material 6.mp4 (4695 kB)
Real-time video (MP4, 4.7 MB) of Psychoronia costalis showing secondary male interacting with copulating pair.
85.4.7 Supplementary Material 7.mp4 (3110 kB)
Real-time video (MP4, 3.1 MB) of male Psychoronia costalis in lateral view showing flicking antennae.
85.4.7 Supplementary Material 8.mp4 (3662 kB)
Real-time video (MP4, 3.7 MB) of 2 male Psychoronia costalis jostling on Cardamine leaf and flicking antennae, and another with mouth and body parts in contact with flower components.