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1 September 2004 DISTRIBUTION OF THE ASIAN CITRUS PSYLLID, DIAPHORINA CITRI KUWAYAMA (RHYNCHOTA: PSYLLIDAE) IN THE CARIBBEAN BASIN
Susan E. Halbert, Carmelo A. Núñez
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Asian citrus psyllid, Diaphorina citri Kuwayama 1907 (Rhynchota: Psyllidae), was described from Taiwan and is native to Asia. It has been known in the Western Hemisphere for several decades in Brazil (Hodkinson & White 1981; Lima 1942). During the past decade, its range has expanded into northern South America and the Caribbean. The focus of this paper is to document the distribution of D. citri in the Caribbean Basin.

Burckhardt & Martinez (1989) reported D. citri intercepted in France on citrus plants from Honduras and “reconditioné aux Etats-Unis avant d’être importé en France.” This report has been difficult to verify. There is no doubt that the intercepted insects were D. citri, but the source of the shipment is questionable. The circumstances under which these infested plants spent time being rehabilitated in the United States are not stated. Citrus plants from foreign sources are not allowed in the USA except under strict quarantine conditions (Title 7 (Agriculture), Chapter III, Part 319.19, Code of Federal Regulations). Additionally, D. citri was not present in the USA in 1989, so the infestation did not come from the USA. Visiting scientists Ronald Cave (Department of Entomology, University of Florida, pers. comm. 2003) and James Baker (Department of Entomology, North Carolina State University, pers. comm. 2003) spent many months in Honduras in the 1990s and failed to find D. citri.

In 1997, specimens of D. citri were found on citrus in Corrientes, Argentina, by Sara Cáceres (Florida State Collection of Arthropods (FSCA) accession # E1997-3427). Evidently, the infestation was minor, because the Argentina Department of Agriculture was unaware of the presence of D. citri in Argentina in 1998. This low infestation level suggests that D. citri had been there prior to 1997 long enough for populations to subside to low levels controlled by local natural enemies.

In 1998, D. citri was found in Guadeloupe (Étienne et al. 1998) and in south Florida (FSCA# E1998-1751) (Halbert 1998; Halbert et al. 2003). Since then, movement throughout the Caribbean has been rapid.

In 1999, D. citri was found on Abaco Island and Grand Bahama Island, Bahamas, on both Citrus spp. and on Murraya paniculata (L.) Jack. (FSCA# E1999-1975, 1976, Robert C. Bullock and Robert R. Pelosi, University of Florida). Two years later, high numbers of D. citri were intercepted on citrus fruit from Abaco, Bahamas sent for processing in Ft. Pierce, FL (FSCA# E2001-747, 850, 978, 1135, and 2049, Kenneth L. Hibbard and James J. Walukiewicz, Florida Department of Agriculture and Consumer Services, Division of Plant Industry (DPI) inspectors). These repeated interceptions of D. citri indicate beyond doubt that D. citri can move on fresh, unprocessed citrus fruit.

Infestations were found in West Bay, Grand Cayman, Cayman Islands in June 2000 (FSCA# E2000-2102, Joan Steer and Sasha Frederick). In 2001, D. citri was intercepted in passenger baggage on leaves of Murraya koenigii (L.) Sprengel from St. Thomas, U.S. Virgin Islands, probably indicating a population of D. citri on that island (FSCA# E2001-696). An infestation was found in Jamaica for the first time in Bodles, St. Catherine on 18 January 2003 (FSCA# E2003-259, Sharon McDonald).

Diaphorina citri was first found in the Dominican Republic in September 2001, but because of its wide distribution in the country, we believe its introduction occurred at least one year before its detection. The specimens from the Dominican Republic are housed at the Museum of Natural History, Santo Domingo, Dominican Republic. All collections are by C.A. Núñez unless otherwise noted. They are labeled as follows: 17 adults on Murraya paniculata--Distrito Nacional, Santo Domingo, Ciudad de los Millones, 16-IX-2001; 9 adults on Citrus sinensis (L.) Osbeck, Plaza de la Cultura “Juan Pablo Duarte,” 20-IX-2001; 6 adults, 1 nymph on Murraya paniculata, Ensanche Miraflores, 21-IX-2001; 3 adults on Citrus limon (L.) Burm. f., 2 adults on Citrus reticulata Blanco, 6 adults on Citrus limetta Risso, 5 adults on Citrus sinensis, 7 adults on Citrus maxima (Burm.) Merr., Urbanización Las Praderas, 22-IX-2001; 7 adults, 3 nymphs on Citrus aurantium L., Ensanche Quisqueya, 23-IX-2001; 11 adults on Murraya paniculata, 3 adults on Citrus limon, 3 adults on Citrus sinensis, Province of Santo Domingo, Santo Domingo Oeste, Engombe 26-VII-2002; 6 adults, 9 nymphs on Murraya paniculata, Zona Industrial, Herrera, 14-XI-2002; 8 adults, 10 nymphs on Murraya paniculata, Santo Domingo Este, Ensanche Ozama, 8-VIII-2002; 7 adults on Citrus sinensis, San Cristobal, General Leger Ave., 30-IX-2001; 9 adults on Murraya paniculata, Monte Plata, Parque Central, 23-VII-2002; 6 adults on Citrus limetta, 5 adults on Citrus maxima, Yamasá, Palmita de los Botados, 23-VII-2002; 13 adults on Murraya paniculata, Independencia, Jimaní (near the border of Haiti), 8-X-2002, C. A. Núñez and H. Takizawa.

Diaphorina citri was found in Cuba in 2001. Several specimens from Cuba, also housed at the Museum of Natural History, Santo Domingo, Dominican Republic, are labeled as follows: La Habana city, Playa, on Citrus sinensis, 24-VI-2001, Y. Hernández; Guanabo, on Citrus limon, 12-IX-2002, L. L. Vázquez; Granma, Bayamo, on Citrus sinensis, 10-VIII-2001, L. L. Vázquez.

We have specimens from Puerto Rico collected on 3 December 2002 at Isabela (FSCA# E2003-1439, Ana Escribano). Prior to that collection D. citri was reported (no specimens collected) on the coast of Isabela and the mountains of Adjuntas in Puerto Rico in June 2001; both Citrus and Murraya were infested (Philip Stansly & Robert Rouse, Southwest Florida Research and Extension Center, University of Florida, pers. comm., 2003).

Diaphorina citri was reported for the first time in Venezuela in 1999 in the Peninsula de Paraguaná, State of Falcón (Cermeli et al. 2000). Hosts were reported as Citrus aurantifolia (Christm.), Citrus reticulata, Citrus latifolia Tan., and Murraya paniculata.

French et al. (2001) reported D. citri in Weslaco, Texas, in September 2001 (FSCA# E2001-3720, J. Victor French). So far, there are no records from other U.S. citrus growing areas of Alabama, Mississippi, Louisiana, Arizona, or California.

There is a report of D. citri intercepted from Belize on Citrus in baggage at Houston, TX in October 2002 in the USDA/APHIS/PPQ interception database. We do not have any specimens of D. citri from Belize.

Finally, we have specimens, of D. citri from Mexico. Roy Morris (Bayer Corp., pers. comm., 2003) reported D. citri in Cancún, Mexico in April 2002 but collected no specimens. He collected specimens when he returned to the same location in November 2003 (FSCA# E2003-6158). There is an interception report in the USDA/APHIS/PPQ interception database of D. citri on Citrus reticulata fruit from Mexico in Texas in April 1996.

In Asia, D. citri primarily causes damage to citrus as a result of transmission of the pathogens that cause huanglongbing (citrus greening disease). In July 2004, as this paper was going to press, citrus greening disease was reported in Brazil by Fundecitrus. This is the first credible report of the disease in the Western Hemisphere.

Summary

Asian citrus psyllid, Diaphorina citri Kuwayama (Rhynchota: Psyllidae), originally is from Asia but has been known in the Western Hemisphere for several decades. In 1998, it was discovered for the first time in the Caribbean Basin both in Guadeloupe and in Florida. Since then, it has spread widely among islands and adjacent mainland countries, including the Bahamas, the Cayman Islands, Jamaica, Dominican Republic, Cuba, Puerto Rico, Venezuela, Mexico, and Texas (USA). Additionally, there were interceptions of D. citri from St. Thomas and Belize. In Asia, D. citri primarily causes damage to citrus as a result of transmission of the pathogens that cause citrus greening disease. In July 2004, as this paper was going to press, citrus greening disease was reported in Brazil by Fundecitrus. This is the first credible report of the disease in the Western Hemisphere.

Acknowledgments

We thank contributors who sent us specimens of D. citri. We thank Thomas Dobbs, USDA/APHIS/PPQ, Miami, for providing the interception information. We also thank Mark Garland and Greg Hodges (DPI), Gary Miller and Douglass Miller (both US National Museum), and an anonymous reviewer for reviewing the manuscript.

References Cited

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Appendices

i0015-4040-87-3-401-f01.gif
Susan E. Halbert and Carmelo A. Núñez "DISTRIBUTION OF THE ASIAN CITRUS PSYLLID, DIAPHORINA CITRI KUWAYAMA (RHYNCHOTA: PSYLLIDAE) IN THE CARIBBEAN BASIN," Florida Entomologist 87(3), 401-402, (1 September 2004). https://doi.org/10.1653/0015-4040(2004)087[0401:DOTACP]2.0.CO;2
Published: 1 September 2004
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