Debus defensus
|
Debus defensus lateral; S.M. Smith |
|
Debus defensus dorsal; S.M. Smith |
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Debus defensus declivity; S.M. Smith |
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Debus defensus frontal; S.M. Smith |
Taxonomic history
Xyleborus defensus Blandford, 1894b: 118.
Debus defensus (Blandford, 1894): Smith et al. 2018b: 395.
Diagnosis
2.85−3.0 mm long; 2.92−3.04 times as long as wide (Park et al. 2020Park et al. 2020:
Park S, Smith SM, Cognato AI, Beaver RA. 2020. Catalogue of Korean Xyleborine ambrosia beetles (Coleoptera: Curculionidae) with seven new species. Journal of Asia-Pacific Biodiversity 13: 210-228. https://doi.org/10.1016/j.japb.2020.01.002). This species is distinguished by the posterolateralposterolateral:
relating to end of the side part/portion
extensions of elytraelytron:
the two sclerotized forewings of beetles that protect and cover the flight wings
very short, less than the width of apicalapex:
point or edge furthest from the body; opposite of base
emargination and declivitydeclivity:
downward slope of either the pronotum or elytra
shallowly excavatedexcavated:
with a depression that is not in a segment of a circle
; and elytralelytral:
pertaining to the elytra
declivitydeclivity:
downward slope of either the pronotum or elytra
impunctate except for a single row of punctures running from the upper margin to the inner margin of the second declivitaldeclivital:
pertaining to the elytral declivity
spine and thence to the apicalapex:
point or edge furthest from the body; opposite of base
emargination.
This species also shares a single row of declivitaldeclivital:
pertaining to the elytral declivity
punctures with D. shoreae but can be distinguihsed by the smaller size, and feeble posterolateral extensions of the elytraelytron:
the two sclerotized forewings of beetles that protect and cover the flight wings
.
May be confused with
Debus emarginatus, D. quadrispinus, and D. shoreae
Distribution
Japan, South Korea
Host plants
recorded from Castanopsis (Murayama 1936Murayama 1936:
Murayama J. 1936. Notes sur les Scolytides (Coleacute;optegrave;res) de Honshucirc; et Kiushucirc;, Japon. Tenthredo 1: 121-149.)
DNA data
Sequences available for COI and CAD.
