Valid Names Results

Acanthococcus kemptoni (Parrott, 1900) (Eriococcidae: Acanthococcus)

Nomenclatural History

• Eriococcus kemptoni Parrott 1900: 144. Type data: UNITED STATES: Kansas, Dundee, on Andropogon scoparius, ?/08/1899, by R.H. Kempton. Lectotype, female, by subsequent designation (MillerMi1992,51-54). Type depository: Washington: United States National Entomological Collection, U.S. National Museum of Natural History, District of Columbia, USA; accepted valid name Notes: There are two vials of possible type material in KSUC. Illustr.
• Nidularia kemptoni (Parrott, 1900); Lindinger 1933a: 116. change of combination
• Eriococcus mancus Ferris 1955a: 138. Type data: UNITED STATES: Mississippi, Agricultural and Mechanical College, on Andropogon virginicus. Syntypes, female, Type depository: Mississippi State (Starkeville): Mississippi Entomological Museum, Mississippi State University, Mississippi, USA.; synonym and homonym (discovered by MillerMi1992, 51-54). Notes: Homonym of Eriococcus mancus Maskell 1897: 316 (discovered by discovered by Hoy1963, 103). The type material of Eriococcus mancus Ferris is misidentified specimens of Eriococcus kemptoni. Illustr.
• Eriococcus mutilus Hoy 1963: 103. replacement name that is a synonym (discovered by MillerMi1992, 51-54). Replacement name for Eriococcus mancus Ferris 1955a
• Acanthococcus kemptoni (Parrott, 1900); Miller & Miller 1992: 51-54. change of combination Illustr.
• Rhizococcus kemptoni (Parrott, 1900); Kozár 2009: 109. change of combination
• Acanthococcus kemptoni (Parrott, 1900); Miller & Stocks 2022: 5. revived combination (previously published)

Common Names

• Kempton eriococcin MillerMi1992

Ecological Associates

Hosts:

Families: 1 | Genera: 4

Geographic Distribution

Keys

• MillerSt2022: pp.12 ( First instar ) [Acanthococcus species]
• Koszta1996: pp.228 ( Adult (F) ) [Acanthococcus species of Northeastern North America] Key as: Acanthococcus kemptoni
• MillerMi1993: pp.8 ( Adult (F) ) [Acanthococcus species in the eastern United States] Key as: Acanthococcus kemptoni
• MillerMi1992: pp.51-54 ( Adult (F) ) [Acanthococcus species in western United States] Key as: Acanthococcus kemptoni
• McDani1964: pp.102 ( Adult (F) ) [Eriococcus species of Texas]
• Ferris1955a: pp.95 ( Adult (F) ) [North American species of Eriococcus] Key as: Eriococcus mancus

Remarks

• Systematics: Ferris (1955a) treated Eriococcus kemptoni and E. mancus as two separate species. After examining the types of both species, it is apparent that the specimens Ferris named and illustrated as E. mancus are actually E. kemptoni. In order to rectify these errors, it has been necessary to place E. mancus as a synonym of E. kemptoni, and describe the specimens Ferris designated as E. kemptoni as E. hoyi. Hoy (1963) discovered that the name Eriococcus mancus Ferris (1955a) was preoccupied by Eriococcus mancus Maskell (1897). Thus he replaced E. mancus with the new name E. mutilus Hoy. Since E. mancus is a synonym of E. kemptoni so also is E. mutilus. The presence of two large-sized enlarged setae on each lateral margin of segments IV to VIII and also on the head, but not on the remaining part of the lateral head, thorax, and anterior abdomen, is unique for the second-instar female of Ac. kemptoni. It also is distinctive in having five setae on each front tibia but only four on each hind tibia. (Miller & Stocks, 2022)
• Structure: Body is elongate, dark yellow, to almost orange. Ovisac is felted, unusually thick (Kosztarab, 1996). Slide-mounted adult female with: enlarged setae cylindrical, curved, elongate, apices rounded, large-sized setae present on margin of most posterior abdominal segments and on head, absent from marginal areas of anterior abdominal segments and thorax; predominant multilocular pore with 7 loculi on venter; hind tibia with 4 setae, front tibia with 5 (Miller & Miller, 1992).
• Biology: Overwinters in egg stage. Males present in late August and early September (Miller & Miller, 1992). Adult female lays 10-65 pinkish eggs (Kosztarab, 1996).
• General Remarks: Detailed description and illustration by Miller & Miller (1992). Description and illustrations of second-instar female nymph and first-instar nymphs in Miller & Stocks (2022)

Illustrations

Citations