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Hosts

This maggot attacks various bulbs, corm, and roots. Hosts include ginger roots, lily bulbs, narcissus bulbs, decomposing pineapple stumps, and rotting dry land taro.

Distribution

The ginger maggot was first reported in Hawaii in 1902 and is known on all major islands. Its world-wide distribution includes the Asiatic and Southwest Pacific regions.

Damage

The ginger maggot is attracted to injured and rotting bulbs, corms, and roots. The damage by this fly maggot is considered secondary, but it may aid in the spread of bacterial and fungal rot organisms.

Biology

EGGS

Description unavailable.

LARVAE

The cream colored are typically maggot-like. They have a pair of protruding structures from the anal end of the maggot.

PUPAE

Pupae are brown in color.

ADULTS

The adult flies are bronze-black in color with several grayish bands on the abdomen and measure approximately 2/5 inch in body length. Wings are dusky and approximately 3/10 inch long.

Behavior

-

Management

NON-CHEMICAL CONTROL

Remove any rotting bulbs, corms or roots from the field area and destroy.

CHEMICAL CONTROL

No information available.

References

Carter, W. 1968. Notes and Exhibitions: Eumerus figurans (Walker). Proc. Hawaiian. Entomol. Soc. 20(1): 15-16. 

Fullaway, D. T. and N. L. H. Krauss. 1945. 245. Eumerus marginatus Grims. pp. 153-154. In: Common Insects of Hawaii. Tongg Publishing Company, Honolulu. 228 pages. 

Zimmerman, E. C. 1948. Eumerus marginatus Grimshaw. pp. 401-402. In Insects of Hawaii. A Manual of the Insects of the Hawaiian Islands, including Enumeration of the Species and Notes on Their Origin, Distribution, Hosts, Parasites, etc. Volume 2: Diptera.

FEB/1992.

E-FIGURA

Photos