Euwallacea piceus
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Euwallacea piceus lateral; R.K. Osborn |
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Euwallacea piceus dorsal; R.K. Osborn |
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Euwallacea piceus declivity; R.K. Osborn |
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Euwallacea piceus frontal; R.K. Osborn |
Taxonomic history
Anodius piceus Motschulsky, 1863: 512.
Euwallacea piceus (Motschulsky): Wood and Bright, 1992: 692.
Wallacellus piceus (Motschulsky): Hulcr and Cognato, 2010a: 29.
Euwallacea piceus (Motschulsky): Storer et al., 2015: 396.
Synonyms
Xyleborus indicus Eichhoff, 1878a: 392. Wood 1969: 117.
Xyleborus imitans Eggers, 1927a: 404. Wood 1969: 117.
Xyleborus indicus subcoriaceus Eggers, 1927b: 92. Schedl 1959: 504.
Xyleborus samoensis Beeson, 1929: 237. Wood 1960: 63.
Diagnosis
2.2−2.6 mm long (mean = 2.36 mm; n = 5); 2.75−3.25 times as long as wide. This species is distinguished by declivitaldeclivital:
pertaining to the elytral declivity
interstriae parallel; interstriaeinterstria:
longitudinal spaces along the elytra between the striae, which is not as<br />
impressed and bear smaller punctures.
granulategranulate:
pertaining to a coarse, grainy surface texture
, granulesgranule:
a small rounded protuberance, like grains of sand
uniform in size; small body size, elongate form; declivitaldeclivital:
pertaining to the elytral declivity
striae 1 not impressedimpressed:
a depression in a surface
; elytralelytral:
pertaining to the elytra
apexapex:
point or edge furthest from the body; opposite of base
entire; and dark brown to black color.
May be confused with
Euwallacea similis and Planiculus spp.
Distribution
throughout the Oriental region from the Indian subcontinent through Southeast Asia, Indonesia to New Guinea and the Western Pacific islands; tropical Africa, Madagascar and the Seychelles, Thailand; recorded in the study region from Bangladesh, Bhutan, India (Andaman Is, Arunachal Pradesh, Assam, Meghalaya, Nicobar Is, West Bengal), Laos, Myanmar, Taiwan, Thailand, Vietnam
Host plants
polyphagous (Browne 1961bBrowne 1961b:
Browne FG. 1961b. The biology of Malayan Scolytidae and Platypodidae. Malayan Forest Records 22: 1-255., Schedl 1963aSchedl 1963a:
Schedl KE. 1963a. Scolytidae und Platypodidae Afrikas. Band II. Familie Scolytidae (Fortsetzung), Unterfamilie Ipinae (Fortsetzung). Revista de Entomologia de Moccedil;ambique 5: 1-594.)
Remarks
The species has some potential as a pest because of its deeply-penetrating galleries and very wide host range (Browne 1961aBrowne 1961a:
Browne FG. 1961a. Borer beetles from Bako National Park (Sarawak). Sarawak Museum Journal 10: 300-318., Schedl 1963aSchedl 1963a:
Schedl KE. 1963a. Scolytidae und Platypodidae Afrikas. Band II. Familie Scolytidae (Fortsetzung), Unterfamilie Ipinae (Fortsetzung). Revista de Entomologia de Moccedil;ambique 5: 1-594.).
DNA data
Sequences available for COI and CAD.
