If you are experiencing problems downloading PDF or HTML fulltext, our helpdesk recommend clearing your browser cache and trying again. If you need help in clearing your cache, please click here . Still need help? Email help@ingentaconnect.com

Seasonal Occurrence of Voria ruralis1 a Parasite of the Cabbage Looper2,in Arizona, and Its Behavior and Development in Laboratory Culture3

$28.00 plus tax (Refund Policy)

Buy Article:


Periodic collections of several species of lepidopterous larvae were made for 27 months from cultivated crops and weeds near Mesa, Arizona, to determine the incidence and extent of parasitism by a tachnid fly, Voria ruralis (Fallén). The parasite was recovered only from the cabbage looper, Trichoplusia ni (Hübner), and seemed to parasitize that insect throughout the year.

Adult V. ruralis mated readily in cages and oviposited all laboratory-reared cabbage looper larvae reared on a semisynthetic diet. At a laboratory temperature of about 24 and variable relative humidity, 26 days were required to complete the life cycle. In 2 experiments the maximum number of progeny from I female was 396 but the average from 4 pairs was 169 per female.

When V. ruralis eggs were deposited they contained maggots that were nearly ready to hatch. The newly hatched larvae bored almost immediately into the body cavity tothe host. About 3 days later the maggots cut openings in the host's dorsal abdominal region and attached themselves with their spiracles in these openings. and remained there until their development was complete.

Document Type: Research Article

Publication date: February 1, 1968

More about this publication?
  • Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
  • Editorial Board
  • Submit a Paper
  • Subscribe to this Title
  • Information for Advertisers
  • Visit this journal's homepage
  • ingentaconnect is not responsible for the content or availability of external websites
Related content



Share Content

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more