Dysmicoccus sylvarum Williams & Granara de Willink

Family

Pseudococcidae

Field characters

No information available.

Validation characters

Anal-lobe cerarii usually with more than 2 conical setae; translucent pores present on hind coxa, trochanter, femur and tibia; abdominal cerarii usually with more than 2 conical setae; without a discoidal pore near the eye; without cluster of oral-collar tubular ducts laterad of anterior spiracle; ventral multilocular pores restricted to posterior 3 abdominal segments; oral-rim tubular ducts absent; cerarii with auxiliary setae; 17 pairs of cerarii.

Comparison

Dysmicoccus mackenziei is similar to D. sylvarum Williams & Granara de Willink by having translucent pores on all hind leg segments except the tibia and tarsus, most abdominal cerarii with more than 2 conical setae, ventral multilocular pores restricted to segments VI, VII, VIII, and 17 pairs of cerarii. Dysmicoccus mackenziei can be distinguished (characters of D. sylvarum given in parentheses) by having discoidal pores near the eye (absent), 2 conical setae in the anal lobe cerarius (more than 2), few translucent pores on the leg segments (many). Some specimens of D. mackenziei that have more than 2 conical setae in the second cerarius are difficult to separate from D. sylvarum.

U.S. quarantine notes

This species was intercepted at U. S. ports-of-entry 8 times between 1995 and 2012, with specimens originating from Costa Rica, Ecuador, Guatemala (most interceptions), Mexico and Vietnam. No older quarantine specimens were examined. ScaleNet lists hosts in 13 plant families. It is most commonly intercepted on bromeliads and bananas. ScaleNet distribution records for D. sylvarum include only Costa Rica and Brazil in the Neotropics. Several species of Dysmicoccus other than D. boninsis (Kuwana), D. brevipes (Cockerell), D. grassii (Leonardi), D. lepelleyi (Betrem), D. mackenziei Beardsley, D. neobrevipes Beardsley, D. orchidum Williams, D. sylvarum and Dysmicoccus sp. nr. texensis have been taken in quarantine including: D. amnicola Williams & Watson (The Philippines, on Pandanus); D. finitimus Williams (Taiwan, on Cocos); D. hambletoni Williams and Granara de Willink (Ecuador, on Xanthosoma); D. hypogaeus Williams (Australia, on Chamelaucium and Leucospermum); D. joannesiae Costa Lima (Ecuador, on Inga); D. lansii Williams (The Philippines, on Lansium); D. probrevipes (Morrison)(Central and South America, on Coffea, Cordia, and Triplaris); D. queenslandianus Williams (Australia, on Allocasuarina); and D. viatorius Williams (The Philippines, on Lansium, Nephelium).

Important references

WilliaGr1992, Granar2009

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