Abstract
Flight patterns of the Simulium vittatum complex (IIIL-1 and IS-7 sibling species) over a central Pennsylvania stream were studied with the aid of an adhesive trap (1.2 by 2.1 m), a Malaise trap, and naturally occurring spider webs. The combined use of the adhesive trap and Malaise trap provided the greatest capture efficiency. Females showed predominant (78.2%) upstream flight. One quarter of the females captured by the adhesive trap were within 7.5 cm above the water. Males were concentrated near the water and near the top of the adhesive trap. Spider webs captured more females near the surface of the water but more males higher above the water. Female S. vittatum (IIIL-1 sibling) had a 41.2% probability of escape from spider webs once captured, whereas males of this species had only a 19.4% escape probability.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
