Plant Protection Bulletin (Taipei) (1998) 40, 287-295

K.P Chang, L.J. Hsiau and W.F. Hsiau (1998)
[The studies on the morphology and life cycle of camphor-tree leaf bee (Mesonurae rufonota (Rohwer))]
Plant Protection Bulletin (Taipei) 40 (3), 287-295
Abstract: Morphology and life cycle of camphor-tree leaf bee (Mesonurae rufonota (Rohwer)) by feeding camphor-tree young leave were studied under laboratory condition (25±1.5°C). This pest occurred from mid-February to July in southern Taiwan. The population density was high from March to May. In the laboratory rearing, this pest had 7 generations per year. The developmental stage took 18.5 ±2.0 days per generation which included the egg stage with 3.0 ± 0.1 days, the larvae stage 8.0 ±0.9 days, the prepupa stage 0.5±0.1 days, and the pupa stage 7.0 ±0.6 days. This pest caused damage by feeding on the young leave of camphor-trees. The egg is oblong-shaped with 1.10 ±0.12 mm in length and 0.49 ±0.13 mm in width. The color is milky-white glabrous. Eggs were laid scattered or arranged in a line on the lower surface of young leave. The hatching rate was 72.2% in the laboratory. Most of the young larvae fed on the mesophyll of the leaf immediately after hatching. The larvae molted 3 times with a total of 4 larval instars. In the prepupal stage, the color of the body turned yellow and pupation occurs in a cocoon with dark brown color. The pupa is oblong-shaped and 9.6 ±0.5 mm in length, 3.7 ±0.2 mm in width. The average emergence rate was 98.1. The body length of female and male adults were 7.0±0.5 mm and 5.6±0.4 mm, respectively. The female adult could oviposit soon after it has emerged. The oviposition period was 2.8 days. Average numbers of eggs laid per female was 264. The female used saw-like ovipositor to saw a hole around 0.9 ±0.1 mm wide under the lower surface of the young leaf and insert an egg in the mesophyll of the leaf. Longevity of the female and male adults were 4.0 ±0.5 and 6.8 ±0.6 days, respectively.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: Chinese)

Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution
population dynamics/ epidemiology

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Mesoneura rufonota	Cinnamomum (crop)	Taiwan