Suitability of Mexican Rice Borer (Lepidoptera: Pyralidae) as a Host for Pediobius furvus (Hymenoptera: Eulophidae)

1996 ◽  
Vol 25 (3) ◽  
pp. 672-676 ◽  
Author(s):  
R. S. Pfannenstiel ◽  
H. W. Browning ◽  
J. W. Smith
Keyword(s):  
Lepidoptera Pyralidae ◽  
Mexican Rice Borer

Pupal Development and Adult Emergence Patterns of the Mexican Rice Borer (Lepidoptera: Pyralidae)

1995 ◽  
Vol 24 (1) ◽  
pp. 76-87 ◽  
Author(s):  
D. W. Spurgeon ◽  
P. D. Lingren ◽  
J. R. Raulston ◽  
T. N. Shaver
Keyword(s):  
Adult Emergence ◽  
Pupal Development ◽  
Emergence Patterns ◽  
Lepidoptera Pyralidae ◽  
Mexican Rice Borer

Effects of Snowdrop Lectin on Mexican Rice Borer (Lepidoptera: Pyralidae) Life History Parameters

2003 ◽  
Vol 96 (3) ◽  
pp. 950-956 ◽  
Author(s):  
M. Sétamou ◽  
J. S. Bernal ◽  
T. E. Mirkov ◽  
J. C. Legaspi
Keyword(s):  
Life History ◽  
Life History Parameters ◽  
Lepidoptera Pyralidae ◽  
Mexican Rice Borer

Field Evaluations of Parasitoids of Larval Stalkborers Against Eoreuma loftini (Lepidoptera: Pyralidae) in Rice

1995 ◽  
Vol 30 (3) ◽  
pp. 406-414 ◽  
Author(s):  
R. S. Pfannenstiel ◽  
H. W. Browning
Keyword(s):  
Oryza Sativa ◽  
Oryza Sativa L ◽  
Eoreuma Loftini ◽  
Allorhogas Pyralophagus ◽  
Lepidoptera Pyralidae ◽  
Mexican Rice Borer

Five species of parasitoids of larval stalkborer were evaluated in Texas in 1987 against the Mexican rice borer, Eoreuma loftini (Dyar), in field enclosures in rice, Oryza sativa L. The braconids, Alabagrus stigma (Brullé) and Allorhogas pyralophagus Marsh, and the bethylid, Goniozus natalensis Gordh, each parasitized >5% of the available E. loftini. The braconids, Apanteles minator Muesebeck and Macrocentrus prolificus Wharton, parasitized <1% of the available hosts. Allorhogas pyralophagus parasitized the highest percentage of borers, including 65.6% of the fifth- and sixth-instar E. loftini. Alabagrus stigma and G. natalensis parasitized fewer borers overall, although parasitism by A. stigma averaged 21.2% of small E. loftini in the rice leafsheaths. Alabagrus stigma, A. pyralophagus, and G. natalensis are candidates for further evaluation in the event that E. loftini becomes a pest of rice in Texas.

A new species of Lydella (Diptera: Tachinidae) from Mexico with a discussion of the definition of the genus

1994 ◽  
Vol 84 (1) ◽  
pp. 131-136 ◽  
Author(s):  
Norman E. Woodley
Keyword(s):  
New Species ◽  
Eoreuma Loftini ◽  
Lepidoptera Pyralidae ◽  
Mexican Rice Borer ◽  
Definition Of ◽  
A New Species

AbstractFollowing the discovery of Lydella jaliscosp. n. (from Jalisco, Mexico), a parasite of the Mexican rice borer, Eoreuma loftini (Dyar) (Lepidoptera: Pyralidae), the limits of the genus Lydella Robineau-Desvoidy have been widened to include Diatraeophaga Townsend syn. n., Metoposisyrops Townsend syn. n., and Metagonistylum Townsend syn. n. All species regarded as belonging to Lydella are listed, with L. minense (Townsend) comb. n., L. oryzae (Townsend) comb. n., L. scirpophagae (Chao & Shi) comb. n., L. sesamiae (Mesnil) comb. n., and L. striatalis (Townsend) comb. n.

Field Evaluations of Pheromone-Baited Traps for Monitoring Mexican Rice Borer (Lepidoptera: Pyralidae)

1991 ◽  
Vol 84 (4) ◽  
pp. 1216-1219 ◽  
Author(s):  
T. N. Shaver ◽  
H. E. Brown ◽  
J. W. Bard ◽  
T. C. Holler ◽  
D. E. Hendricks
Keyword(s):  
Baited Traps ◽  
Lepidoptera Pyralidae ◽  
Mexican Rice Borer

Effects of Snowdrop Lectin on Mexican Rice Borer (Lepidoptera: Pyralidae) Life History Parameters

2003 ◽  
Vol 96 (3) ◽  
pp. 950-956 ◽  
Author(s):  
M. Sétamou ◽  
J. S. Bernal ◽  
T. E. Mirkov ◽  
J. C. Legaspi
Keyword(s):  
Life History ◽  
Life History Parameters ◽  
Lepidoptera Pyralidae ◽  
Mexican Rice Borer

Spatial Distribution Patterns of the Mexican Rice Borer (Lepidoptera: Pyralidae) in Sugar Cane

2005 ◽  
Vol 40 (1) ◽  
pp. 16-24
Author(s):  
D. W. Spurgeon ◽  
J. R. Raulston
Keyword(s):  
Spatial Patterns ◽  
Random Distribution ◽  
Rio Grande Valley ◽  
Distribution Patterns ◽  
Population Estimates ◽  
Lower Rio Grande Valley ◽  
Saccharum Spp ◽  
Lepidoptera Pyralidae ◽  
Field Heterogeneity ◽  
Mexican Rice Borer

The Mexican rice borer, Eoreuma loftini (Dyar), is the primary pest of sugarcane (Saccharum spp.) in the Lower Rio Grande Valley of Texas; yet, few studies have examined its economic impact. Knowledge of the spatial patterns of the rice borer and associated damage in sugarcane would be useful in designing studies to further investigate the economic importance of this pest. We examined the respective spatial patterns of larvae, pupae, tunnels and damaged internodes using Taylor's power law for population estimates based on plots or sites within fields and based on fields. Estimates based on plots or sites featured smaller sample sizes and greater variability than estimates based on fields. Analyses based on plots or sites also indicated between-field heterogeneity in estimates of Taylor's b for small, medium and large larvae, and for pupae. Such heterogeneity was not observed for total larvae, tunnels and bored internodes. In contrast, analyses based on fields indicated that common-slopes models were appropriate for each population category. The inconsistencies between results of analyses for plots or sites compared with those for fields probably resulted from the inadequacy of population estimates derived from the smaller-sized sample units. Based on samples from fields, counts exhibited mild clumping except for medium-sized larvae (random distribution) and pupae (regular distribution). Our results indicate that counts of most population categories of the rice borer are mildly clumped and that the observed distribution pattern is sensitive to sample size.

Realized and Potential Fecundity of the Mexican Rice Borer (Lepidoptera: Pyralidae) as a Function of Pupal Weight

1995 ◽  
Vol 24 (1) ◽  
pp. 94-98 ◽  
Author(s):  
D. W. Spurgeon ◽  
P. D. Lingren ◽  
T. N. Shaver ◽  
J. R. Raulston
Keyword(s):  
Pupal Weight ◽  
Potential Fecundity ◽  
Lepidoptera Pyralidae ◽  
Mexican Rice Borer

Evaluation of Steinernema riobravis (Nematoda: Steinernematidae) Against the Mexican Rice Borer (Lepidoptera: Pyralidae)

2000 ◽  
Vol 35 (2) ◽  
pp. 141-149 ◽  
Author(s):  
Jesusa C. Legaspi ◽  
Benjamin C. Legaspi ◽  
Robert R. Saldaña
Keyword(s):  
Field Experiment ◽  
Plant Height ◽  
Aboveground Biomass ◽  
Treatment Effects ◽  
Application Rate ◽  
Juice Quality ◽  
Saccharum Spp ◽  
Lepidoptera Pyralidae ◽  
Mexican Rice Borer ◽  
High Application

The virulency of an endemic nematode, Steinernema riobravis Cabanillas, Poinar and Raulston (Nematoda: Steinernematidae), was tested against the Mexican rice borer, Eoreuma loftini(Dyar) (Lepidoptera: Pyralidae), in the laboratory and field. Steinernema riobravis caused 100% mortality in E. loftini larvae at all concentrations of 20 to 240 nematodes per larva 2 d post treatment. Numbers of juvenile progeny increased significantly with inoculum dosage of nematodes. Average juvenile progeny ranged from 2,000 per borer larva at 10 nematodes per larva to over 4,000 per larva at 120 per larva. A field experiment on sugarcane (Saccharum spp. cv ‘NCo 310’) was performed using three treatments: (1) control (no nematodes); (2) low application rate (1.24 × 109 nematodes/ha); and, (3) high application rate (2.47 × 109 nematodes/ha). At weekly intervals, the field was sampled for numbers of internodes per stalk, numbers of internodes damaged by borer larvae, and parasitoids reared from larvae collected. The field results showed the nematode treatments were ineffective in reducing borer incidence or damage. Percentage of bored internodes and numbers of borers collected significantly increased with time, but treatment effects were not significant. Numbers of parasitoids emerging from the larvae collected were too low to be analyzed statistically. Plant height, aboveground biomass, and juice quality were not significantly affected by treatment. The ineffectiveness of the nematode applications may be due to desiccation caused by exposure to sunlight and inadequate humidity, as well as poor contact with the target insect.

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