Melanagromyza obtusa (Malloch)
New detection in South Florida
Name: Melanagromyza obtusa (Malloch)
Animalia: Arthropoda: Insecta: Diptera: Agromyzidae
Common Names: pigeonpea pod fly; pod fly
Issues of Concern: When first discovered in the Western Hemisphere, the pod fly was intercepted on pigeonpea, Cajanus cajan, >300 times from Puerto Rico (PR), and >15 times from the Dominican Republic (DR) (March and April 2000). All of these interceptions were in personal baggage (PR to US or DR to PR). Melanagromyza obtusa was also detected in Haiti. Recently, in Miami, FL, the pod fly larvae and pupae were detected in a homeowner’s pigeonpea planting (December 2003) (http://www.doacs.state.fl.us/pi/enpp/pigpea.html). The pod fly is a serious pest of pigeonpea in its natural range and could be of economic concern if it becomes established in North America outside the Caribbean basin.
Hosts: The primary host is pigeonpea, Cajanus cajun, on which the interceptions are occurring. Only 4 additional genera, all within Papilionaceae, are confirmed hosts in the pod fly's natural range, and are of little economic significance. Unconfirmed alternate hosts include Phaseolus spp. (bean) and Vigna spp. (e.g. cow pea), which could be of significance to North America.
Phytosanitary Alert System
Pest Alert www.pestalert.org
Prepared on: 02/24/2004