Classification:

Genus: Pentamerismus

Species: Pentamerismus taxi

 
Holotype:

Pentamerismus taxi (Haller, 1877): 85; Switzerland, ex Taxus sp. (Taxaceae).

 
Type Depository:
Unknown.
 
Synonyms:
Senior synonym of: Pentamerismus morishitai Pritchard & Baker — Pritchard & Baker (1958);
 
Other Names:
Tenuipalpus taxi (original designation) — Haller (1877)
Pentamerismus taxiBaker & Pritchard (1953c)
Oligomerismus taxiMitrofanov et al. (1975)
Pentamerismus (Oligomerismus) taxiMirza et al. (2025)
 
Distribution:
ARMENIA: Bagdasarian (1962);
GEORGIA: Arabuli (2015);
JAPAN: Ehara (1962);
SOUTH KOREA: Lee (1988);
USA — CALIFORNIA: Pritchard & Baker (1958); PENNSYLVANIA: Lehman (1982);
 
Hosts / Substrates:
ALTINGIACEAE: American sweetgum — Lehman (1982);
CELASTRACEAE: evergreen euonymus — Lehman (1982);
CUPRESSACEAE: Chinese juniper — Lehman (1982); eastern arborvitae — Lehman (1982)Juniperus arizonica (R.P.Adams) R.P.Adams — Uysal et al. (2001)Juniperus hibernica Lodd. ex Loudon — Uysal et al. (2001)Juniperus sabina L. — Uysal et al. (2001)Juniperus sp. — Hatzinikolis (1987)Thuja orientalis L. — Papaioannou-Souliotis et al. (1994)Thuja sp. — Hatzinikolis (1970);
ERICACEAE: azalea — Lehman (1982);
FAGACEAE: chestnut — Lehman (1982);
GINKGOACEAE: Ginkgo sp. — Lehman (1982);
PINACEAE: black pine — Lehman (1982); Canada hemlock — Lehman (1982); Colorado spruce — Lehman (1982); eastern white pine — Lehman (1982); Norway spruce — Lehman (1982)Pinus sp. — Lee (1988); red pine — Lehman (1982)Sequoia sp. — Kontschán (2014);
SAPINDACEAE: Norway maple — Lehman (1982); red maple — Lehman (1982);
 
 
Notes:
- According to Pritchard & Baker (1952), new combination????; previously known as Tenuipalpus taxi Haller. According to Pritchard & Baker (1958), although there is no type and the original figure is inadequate, the occurrence of the same species, restricted to English Yew (T. baccata), in both California and Switzerland, leads to the synonymy of morishitai with taxi. Bowman & Southgate (1980) reported this species on yews in England.;
 

JUNIOR SYNONYM:

 
Classification:

Genus: Pentamerismus

Species: Pentamerismus morishitai

 
Holotype:

Pentamerismus morishitai Pritchard & Baker, 1952: 12; Berkeley, California, USA, ex Taxus baccata L. (Taxaceae).

 
Type Depository:
United States National Museum of Natural History at Beltsville, Maryland, USA.
 
Synonyms:
Junior synonym of: Pentamerismus taxi (Haller) — Pritchard & Baker (1958);
 
Distribution:
USA — CALIFORNIA: Pritchard & Baker (1952); PENNSYLVANIA: Pritchard & Baker (1952); WASHINGTON: Pritchard & Baker (1952);
 
Hosts / Substrates:
TAXACEAE: Taxus baccata L. — Pritchard & Baker (1952)Taxus hibernica Hook. ex Loudon — Pritchard & Baker (1952)Taxus sp. — Pritchard & Baker (1952);
 
Redescription: Baker & Pritchard (1953c);

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