Euwallacea semirudis
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Euwallacea semirudis lateral; R.K. Osborn
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Euwallacea semirudis dorsal; R.K. Osborn |
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Euwallacea semirudis declivity; R.K. Osborn |
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Euwallacea semirudis frontal; R.K. Osborn |
Taxonomic history
Xyleborus semirudis Blandford, 1896b: 210.
Euwallacea semirudis (Blandford): Wood, 1989: 173.
Synonyms
Xyleborus dubius Eggers, 1923: 199. Kalshoven, 1959b: 139.
Xyleborus sereinuus Eggers, 1923: 187. Kalshoven, 1959b: 139.
Xyleborus hybridus Eggers, 1927b: 90. Kalshoven, 1959b: 139.
Xyleborus neohybridus Schedl, 1942a: 188. Smith et al., 2020b: 252.
Xyleborus longehirtus Nunberg, 1956: 209 [Unnecessary new name for Xyleborus dubius. Schedl, 1960b: 139.]
Diagnosis
3.1−3.3 mm long (mean = 3.18 mm; n = 5); 2.21−2.29 times as long as wide. This species is distinguished by the pronotumpronotum:
the dorsal surface of the thorax
basic (type 2) when viewed dorsally, anterioranterior:
the front or forward; opposite of posterior
margin appearing rounded; elytralelytral:
pertaining to the elytra
declivitydeclivity:
downward slope of either the pronotum or elytra
gradual; declivitaldeclivital:
pertaining to the elytral declivity
face flat, opalescentopalescent:
iridescent, showing vaying colors
and shagreenedshagreened:
covered with a closely-set roughness, like shark skin 
; striaestria:
punctures in rows, which may or may not be impressed to make grooves impressedimpressed:
a depression in a surface
, strial punctures large; and posterolateralposterolateral:
relating to end of the side part/portion
margin of declivitydeclivity:
downward slope of either the pronotum or elytra
carinate.
May be confused with
Euwallacea fornicatus species complex (E. fornicatior, E. fornicatus, E. kuroshio, E. perbrevis), E. andamanensis, E. geminus, E. malloti, E. neptis, E. testudinatus, and E. velatus)
Distribution
‘Borneo’, Brunei, Indonesia (Java, Mentawai Is., Sumatra), East & West Malaysia, Philippines, Sri Lanka, Thailand
Host plants
polyphagous (Browne 1961bBrowne 1961b:
Browne FG. 1961b. The biology of Malayan Scolytidae and Platypodidae. Malayan Forest Records 22: 1-255.)
DNA data
Sequences available for COI and CAD.
