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Larvae collected from an oak tree hole east of Brackettville, Kinney County, Texas, resulted in the collection of 3 species: Aedes triseriatus, Ae. zoosophus, and Haemagogus equinus. One larva and 1 female of Hg. equinus were recovered from this sample. This is the first report of Hg. equinus in Kinney County and the first report of this species being collected in Texas since 1962. Samples collected from other sites documented the presence of Ae. epactius, Culex nigripalpus, and Psorophora signipennis in Kinney County.

In 1920, Culex coronator was reported from San Benito, Texas, and later in Arizona, New Mexico, and Oklahoma. In 2005, this species was reported to be spreading across the southeastern USA. Now reported in 14 states, it has been found as far north as northern Oklahoma; Memphis, TN; and Suffolk, VA. The public health significance of Cx. coronator is not firmly established, even though it has been implicated as a potential vector of several arboviral diseases. This study aims to document additional Cx. coronator county-level records, to provide information about its continued expansion across the southern USA, and to provide a short research update into its vector potential. Data acquired through multistate collaborations and author collections resulted in 146 new county records from Alabama, Arkansas, Florida, Georgia, Louisiana, Mississippi, North Carolina, Oklahoma, South Carolina, and Texas. No new county records were presented for Arizona, New Mexico, Tennessee, or Virginia, which had previously reported this species. With these new data, this species has been documented in 386 counties in 14 states of the continental USA.

Aedes japonicus japonicus continues to spread westward and in this study, its presence is documented in 8 counties in Nebraska and in Bowie County, TX. In 1998, Ae. japonicus was collected in Connecticut, New Jersey, and New York for the 1st records of this species in North America. Except for Louisiana, it has been reported from all states that border or are east of the Mississippi River. In Canada, it has been reported in Ontario and all eastern provinces. In the Pacific Northwest, it has been reported in Washington, Oregon, and British Columbia, and in the midwestern states that do not border the Mississippi River, Kansas, Oklahoma, and South Dakota are the only states to have reported its presence in peer-reviewed journals.

The aim of this study was to consolidate mosquito information for 13 counties west of San Antonio, Bexar County, Texas, and to create a species checklist for future regional studies. The resulting checklist established a baseline for local mosquito-borne disease surveillance and can serve as a resource for public health officials. The 13 counties in this region were Bandera, Edwards, Kendall, Kerr, Kimble, Kinney, Maverick, Medina, Real, Sutton, Uvalde, Val Verde, and Zavala counties. To develop the checklist, county-level mosquito species data were extracted from 38 peer-reviewed publications and government documents, university reference collections, private collections, and the Texas Department of State Health Services' historical collection data. These data were combined with author field collections to create a comprehensive species list. Overall, 339 county-level records were documented through field studies with a total of 36 species representing 8 genera confirmed as being present in this region. An additional 14 species listed in historical surveillance records were not collected during this study.

Populations of Culex stigmatosoma and Cx. thriambus have been documented in the southwestern USA with a southward range extension to northern South America and Central America, respectively. Studies conducted in California indicate both species are potential vectors of West Nile virus. However, vector competence studies are lacking for other parts of the USA. During a multicounty regional surveillance study west of San Antonio, Texas, multiple errors were observed in the Texas distributional literature of these species. These errors involved incorrect distributional information in Texas and US publications. Evidence to correct these errant records was found upon further analysis of Texas literature and curated specimens. Therefore, the aims of this study were to present that evidence and then combine the corrected records with additional records from the Texas Department of State Health Services and from larval collections made during other Texas surveillance studies.

The distribution of

Mosquito larval surveillance for environmental monitoring and pest-control purposes was conducted monthly at dredged soil-dumping areas during the construction of a new harbor in Yongcheon Bay, approximately 5 km SE of Jinhae, on the SW side of Namsan (Mt. Nam) and across the bay from Su-do (Su Island) in Gyeongsangnam Province, Republic of Korea (ROK) from November 2007 through April 2008. During this study, mosquitoes collected as overwintering larvae were Aedes togoi in brackish rock pools along the seashore and Anopheles lindesayi japonicus along the vegetated margins of a slow-flowing drainage ditch and associated freshwater ground pools containing green algae. Overwintering An. lindesayi larvae also were collected along stream margins and stream pools of moderate- to fast-flowing mountain streams near Chungju (Chungcheongbuk Province) (October 2007 and March 2008) and Munsan (Gyeonggi Province) (September 2007 and April 2008). First and second instars were collected and identified in late September 2007 through February 2008. During March and April, collections were primarily 3rd and 4th instars, and by the end of April, pupae were collected. This is the first report of An. lindesayi japonicus overwintering as larvae in the ROK.

Beginning in January 2002 and ending in November 2003, data were collected on the size (eggs/egg raft) and occurrence of egg rafts laid by Culiseta incidens within 5 miles of Fort Lewis, WA. Culiseta incidens initiated oviposition in late March to early April and ceased oviposition in September-October. Twenty egg rafts from Culex pipiens, a larval habitat associate of Cs. incidens, were also collected during this study and that information is reported. Culex pipiens initiated oviposition in late May, and termination of oviposition appeared to occur in late August. The range of the number of eggs per raft was 59-329 for Cs. inicidens and 218-413 for Cx. pipiens.

A limited survey was conducted in 2003 to determine if Ochlerotatus japonicus was spreading outside of King County, Washington. Ochlerotatus japonicus was found in north-central Pierce County and west-central Snohomish County. These collections represent county records. An additional site was reported from King County. Ochlerotatus japonicus is established and spreading to other areas of Washington.

Before this study, the mosquito Ochlerotatus (Finlaya) togoi (Theobald) had been reported from only 2 locations within the continental United States, both of which were documented in Washington State. This study used active and passive surveillance to determine the current distribution of Oc. togoi along the Pacific Coast of Washington. Results of the study show that small, but stable, populations of Oc. togoi exist in the northern San Juan Island region of Puget Sound. Geological formations in this region are conducive to rock holes and support populations of Oc. togoi. No members of Oc. togoi were found on the southwestern Washington coast, the coast of the Olympic Peninsula, or in the lower Puget Sound.

This is a report on the 1st occurrence of Ochlerotatus japonicus in the state of Washington. In August through November 2001, immature stages were found near the King County communities of Carnation (2 sites), Black Diamond, Kent, and Issaquah and were reared to the adult stage for identification and preservation.