Life history and parasites of Asphondylia borrichiae (Diptera: Cecidomyiidae), a gall maker on Borrichia frutescens

We studied the life history, seasonal and spatial abundance, and parasites of Asphondylia borrichiae Rossi and Strong (Diptera: Cecidomyiidae), a newly described gall maker on sea oxeye daisy, Borrichia frutescens (L.) DC. Galls are located on the apical meristem of the host plant, are usually solit...

Full description

Saved in:
Bibliographic Details
Published in:The Florida entomologist 1992-03, Vol.75 (1), p.130-137
Main Authors: Stiling, P. (University of South Florida, Tampa, FL), Rossi, A.M, Strong, D.R, Johnson, D.M
Format: Article
Language:English
Subjects:
AGALLAS
ASPHONDYLIA
Asphondylia borrichiae
BIOLOGICAL CONTROL
Borrichia frutescens
Cecidomyiidae
CICLO VITAL
COMPOSITAE
CONTROL BIOLOGICO
CYCLE DE DEVELOPPEMENT
Diptera
Entomology
EULOPHIDAE
EURYTOMIDAE
FLORIDA
FLORIDE
GALEOPSOMYIA HAEMON
GALLE
Hyperparasites
Insect larvae
INSECTE NUISIBLE
INSECTOS DANINOS
LARVAE
LARVAS
LARVE
LIFE CYCLE
LUTTE BIOLOGIQUE
Male animals
MORTALIDAD
MORTALITE
MORTALITY
PARASITE
PARASITES
Parasitism
Parasitoids
PARASITOS
PEST INSECTS
Plant gall
PLANT GALLS
RILEYA CECIDOMYIAE
Seasons
Sex ratio
TENUIPETIOLUS TERREDON
TORYMUS
TORYMUS UMBILICATUS
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We studied the life history, seasonal and spatial abundance, and parasites of Asphondylia borrichiae Rossi and Strong (Diptera: Cecidomyiidae), a newly described gall maker on sea oxeye daisy, Borrichia frutescens (L.) DC. Galls are located on the apical meristem of the host plant, are usually solitary, often prevent flowering, and can kill the host stem. Individual galls may contain from one to eight fly larvae, most commonly one to three. Gall size is greatest in spring. Galls can be found year round, and there are several generations, of which the largest occurs in the summer. Gall densities differ consistently between sites, but the seasonal variation of galls within sites is very similar. Fly larvae in galls are attacked by four species of Hymenoptera, Rileya cecidomyiae and Tenuipetiolus teredon (Eurytomidae), Torymus umbilicatus (Torymidae), and Galeopsomyia haemon (Eulophidae), of which G. haemon causes the most mortality. At least two of the parasites are facultatively hyperparasitic. Parasitism levels are low in the spring but rise quickly to reach 100% in the early summer and late fall. /// Se estudió la biología, la abundancia estacional y espacial y el parasitismo de Asphondylia borrichiae Rossi y Strong (Diptera: Cecidomyiidae), un nuevo insecto de las agallas encontrado en manzanilla loca, Borrichia frutescens (L.) DC. Las agallas se encuentran en el meristemo apical de la planta hospedera, y son usualmente solitarias y a menudo impiden la floración, o pueden matar el tallo. Cada agalla puede tener desde una hasta ocho larvas, pero comunmente se encuentran una o tres. Las agallas son mas grandes durante la primavera, pero pueden ser encontradas durante todo el año, contando con varias generaciones, de las cuales la mas abundante ocurre en el verano. Las densidades de las agallas difieren entre cada lugar, pero la variación estacional de las agallas entre lugares es bastante similar. Larvas de la mosca en las agallas son atacadas por cuatro especies de hymenopteros, Rileyacecidomyiae y Tenuipetiolus teredon (Eurytomidae), Torymus umbilicatus (Torymidae) y Galeopsomya haemon (Eulophidae), de los cuales G. haemon causa la mayor mortalidad. Al menos dos de los parasitos son facultativamente hiperparasiticos. Los niveles de parasitismo son bajos en la primavera pero aumentan rapidamente hasta 100% al comienzo del verano y al final del otoño.
ISSN:0015-4040
1938-5102
DOI:10.2307/3495491