Valid Names Results

Duplachionaspis spartinae (Comstock, 1883) (Diaspididae: Duplachionaspis)

Nomenclatural History

• Chionaspis spartinae Comstock 1883: 106-107. Type data: UNITED STATES: Massachusetts, Woods Hole, on Spartina stricta, by W. Trelease. Syntypes, female, Type depository: Albany: New York State Museum Insect Collection, New York, USA; accepted valid name Illustr.
• Trichomytilus spartinae (Comstock, 1883); Lindinger 1934: 64. change of combination
• Duplachionaspis spartinae (Comstock, 1883); Ferris 1937: SI-48. change of combination
• Haliaspis spartinae (Comstock, 1883); Takagi 1963e: 119. change of combination
• Duplachionaspis spartinae (Comstock, 1883); Normark, et al. 2019: 61. revived combination (previously published)

Common Names

• cord grass scale Essig1915a
• salt marsh grass scale Comsto1883

Ecological Associates

Hosts:

Families: 1 | Genera: 3

Foes:

Families: 1 | Genera: 1

Geographic Distribution

Keys

• Koszta1996: pp.409 ( Adult (F) ) [Key to the genera of the subfamily Diaspidinae] Key as: Haliaspis spartinae
• LiuHo1994: pp.139 ( Adult (F) ) [Key to species of Haliaspis] Key as: Haliaspis spartinae
• Howell1978: pp.407 ( Adult (F) ) [Key to the adult females of Haliaspis] Key as: Haliaspis spartinae
• HowellTi1976: pp.180 ( Second instar (M) ) [Key to second-stage males of Haliaspis] Key as: Haliaspis spartinae
• HowellTi1975a: pp.433 ( First instar ) [Key to first instars of Haliaspis] Key as: Haliaspis spartinae
• Howell1974: pp.42 ( Adult (F) ) [Key to species of Haliaspis] Key as: Haliaspis spartinae
• McDani1971: pp.303 ( Adult (F) ) [Key to the Texas species of Duplachionaspis] Key as: Duplachionaspis spartinae
• Takagi1971: pp.127 ( Adult (F) ) [Key to species of Haliaspis] Key as: Haliaspis spartinae
• Ferris1942: pp.SIV-446:53 ( ) [Key to species of Duplachionaspis] Key as: Duplachionaspis spartinae
• MacGil1921: pp.325 ( Adult (F) ) [Key to species of Chionaspis] Key as: Chionaspis spartinae
• Comsto1916: pp.559 ( Adult (F) ) [Key to species of Chionaspis] Key as: Chionaspis spartinae
• Comsto1881a: pp.98 ( ) [Key to species of Chionaspis] Key as: Chionaspis spartinae

Remarks

• Systematics: Duplachionaspis spartinae is distinguishable from other North American species by the dorsal ducts are as large as the marginal, are in sharply defined rows to the 6th segment, with 1 or 2 pores also that seem to belong to the 7th segment; perivulvar pores in very large clusters; submarginal setae on the ventral side of pygidium conspicuously large (Ferris, 1937).
• Structure: Female scale conspicuously white, rather rough and transversely quite convex, up to 3 mm long (Ferris, 1937). Male scale snowy white, larval skin bright yellow; lateral carinae weak (Comstock, 1883).
• Biology: Duplachionaspis spartinae occurs on the dorsal side of host leaves (Ferris, 1937). It has been observed on plants at the same level as reproducing barnacles and observed covered with a thick layer of salt marsh detritus. D. spartinae is able to survive in the intertidal zone, tolerating submersion for at least 1 hour on each high tide. The insect overwinters in the egg stage on dead host material (Tippins & Beshear, 1971). It feeds on parenchyma cells but does not produce honeydew as do many phytophagous insects (Rosen, 1990) In Ellisville Marsh< Plymouth, Massachusetts, where the scale was observed at infestation levels, it may be subjected to sustained submergence for 3 hours or more. It may be that this insect's association with salt marsh vegetation is somehow indicative of compromised hydrology or water logging. (Japonshvili & Russell, 2012).
• General Remarks: Descriptions and illustrations by Comstock (1883) and Ferris (1937).

Illustrations

Citations