Diuncus justus
|
Diuncus justus lateral; R.K. Osborn |
|
Diuncus justus dorsal; R.K. Osborn |
|
Diuncus justus declivity; R.K. Osborn |
|
Diuncus justus frontal; R.K. Osborn |
Taxonomic history
Xyleborus justus Schedl, 1931: 339.
Diuncus justus (Schedl): Hulcr and Cognato, 2009: 32.
Synonyms
Xyleborus marginicollis Schedl, 1936c: 64. Hulcr, 2010: 107.
Xyleborus ciliatus Eggers, 1940: 141. Hulcr and Cognato, 2013: 81.
Xyleborus apiculatus Schedl, 1942a: 190. Hulcr and Cognato, 2013: 81.
Diagnosis
1.5−1.7 mm long (mean = 1.65 mm; n = 5); 2.36−2.5 times as long as wide. This species can be distinguished by the minute size; unarmed declivitydeclivity:
downward slope of either the pronotum or elytra
; declivitaldeclivital:
pertaining to the elytral declivity
striae 1 shallowly impressedimpressed:
a depression in a surface
; nearly glabrousglabrous:
smooth, devoid of vestiture
appearance; and laterallateral:
pertaining to the side
margin of the protibiaprotibia:
tibia of the first pair of legs
armed with four denticlesdenticle:
a small tooth, the sides of which are equal and the tip is above the middle of the base
.
May be confused with
Distribution
Australia, China (Fujian), Indonesia (Java), East & West Malaysia, New Guinea, Vietnam
Host plants
This species has only been recorded from Cunninghamia (Cupressaceae), but it likely occurs on angiosperms as well (Smith et al., 2020b).
DNA data
Sequences available for COI and CAD.
CAD: MN620189
