Fiorinia externa Ferris, 1942

Ahmed, Muhammad Z., Moore, Matthew R., Rohrig, Eric A., McKenzie, Cindy L., Liu, Di, Feng, Jinian, Normark, Benjamin B. & Miller, Douglass R., 2021, Taxonomic and identification review of adventive Fiorinia Targioni Tozzetti (Hemiptera, Coccomorpha, Diaspididae) of the United States, ZooKeys 1065, pp. 141-203 : 141

Fiorinia externa Ferris, 1942

Field characteristics.

First-instar exuviae barely touching second-instar exuviae. Distinct indentation formed between attachment of first- and second-instar exuviae. Second-instar exuviae narrow, parallel sided, and elongate; longitudinal ridge absent or weakly developed. Second-instar exuviae reddish brown anteriorly and light brown to yellow posteriorly. Posterior end of adult female within second-instar exuviae rounded (Suppl. material 1: Fig. S1).

First-instar nymph.

Described in Howell (1977).

Second-instar female.

Median lobes slender, narrower than medial lobule of second lobe, not projecting beyond medial lobule of second lobes. With five pairs of marginal macroducts. Swelling of body margin adjacent to macroduct usually pointed. With four large gland spines on margin of each side of body from abdominal segments II-V; usually without small gland spine on each side of abdominal segment VI; with small gland spines on margin or submargin of abdominal segment I. With one microduct on each side of head. Longitudinal line of microducts present submarginally on venter of II-V, normally with one microduct on each side of each segment. Cicatrices absent.

Second-instar male.

Three duct clusters on each side of body; posterior cluster composed of several small ducts and two communal ducts. Five longitudinal lines of microducts on venter of abdomen (one medial, two mediolateral, two submarginal). Cluster of small microducts with sclerotized orifice laterad of anterior spiracle. Fewer than five large-sized gland spines on each side of body between anterior and posterior spiracles. Antennae each with one enlarged seta.

Florida collection records.

All records are on Christmas trees imported from states outside of Florida. This species is not established in Florida, and its common host, Abies fraseri , also does not occur naturally in Florida. It has been found on imported Christmas trees in the following localities in Florida: Broward Co., Miramar, November 20, 2013, on Abies fraseri , S. Alspach (2013-8494); Broward Co., Davie, December 10, 2013, on Abies fraseri , S. Beidler (2013-8906); Citrus Co., Inverness, December 4, 2013, on Abies fraseri , S. Jenner (2013-9766); Hamilton Co., White Springs, December 11, 2012, on Abies fraseri , H. Randolphs (2012-9239); Hillsborough Co., Tampa, November 20, 2012, on Abies fraseri , T. Streeter (2012-8844); Marion Co., Ocala, December 2, 2013, on Abies fraseri , S. Wayte (2013-8755); Monroe Co., Tavernier, November 28, 2012, on Abies fraseri , J. Farnum (2012-8924); Volusia Co., Port Orange, November 27, 2017, on Abies fraseri , K. Coffey (2017-4496).

Specimens examined for description and diagnosis.

Alleghany Co., Glade Creek , North Carolina, November 22, 2019 on Abies fraseri , A. Bartlett, 5 2nd ♀ , 5 2nd ♂, 10 ad ♀ (2019-6449), Alleghany Co., Laurel Springs , North Carolina, December 8, 2020 on Abies fraseri , L. Milton, 10 ad ♀ (2020-4778).

Other specimens examined from USNM.

Japan, Kobe, Arboretum , May 8, 2006, on Tsuga? sieboldii , S. Lyon 7 2nd ♀ (0606537) . United States, Connecticut, Danbury , September 7, 1944, on hemlock, S.W. Bromley 3 1st ♀ (JOH 07-77) ; Connecticut, Fairfield Co., New Canaan , November 3, 1950, on Nordman fir, S.W. Bromley 1 1st ♀ , 18 2nd ♀, 20 ad ♀. New York, Nassau Co., Oyster Bay , May 17, 1947, on hemlock, B.F. Maker 2 1st ♂ (JOH 10-77) ; New York, Suffolk Co., Brookhaven , November 25, 1985, on leaves of hemlock, T. Kowalsick (ek-01-86) ; Pennsylvania, Radnor , July 26, 1946, on hemlock, S.W. Bromley 1 1st ♀ (JOH 08-77).