Xyleborinus perpusillus

Taxonomic history

Xyleborus perpusillus Eggers, 1927a: 404.

Xyleborinus perpusillus (Eggers): Hulcr, 2010: 115.

Synonyms

Xyleborus perminutissimus Schedl, 1934b: 90. Hulcr, 2010: 116.

Xyleborus angustatulus Schedl, 1942c: 42. Kalshoven, 1959a: 152.

Diagnosis

1.6−1.9 mm long (mean = 1.76 mm; n = 5); 2.67−3.17 times as long as wide. This species is distinguished by the entireentire:
without marginal teeth or notches
length of interstriaeinterstria:
longitudinal spaces along the elytra between the striae, which is not as<br /> impressed and bear smaller punctures.
2 unarmed by tubercles; posterolateralposterolateral:
relating to end of the side part/portion
margin of elytraelytron:
the two sclerotized forewings of beetles that protect and cover the flight wings
rounded, unarmed; declivitaldeclivital:
pertaining to the elytral declivity
interstriae flat, interstriaeinterstria:
longitudinal spaces along the elytra between the striae, which is not as<br /> impressed and bear smaller punctures.
2 not impressedimpressed:
a depression in a surface
; and denticlesdenticle:
a small tooth, the sides of which are equal and the tip is above the middle of the base
on interstriaeinterstria:
longitudinal spaces along the elytra between the striae, which is not as<br /> impressed and bear smaller punctures.
1, 3 small.

This species is very similar to X. huifenyinae and can be distinguished by the shiningshining:
appearing glossy or bright in luster; referring to a surface that is polished and reflects light well
declivitydeclivity:
downward slope of either the pronotum or elytra
, posterolateralposterolateral:
relating to end of the side part/portion
margin of the declivitydeclivity:
downward slope of either the pronotum or elytra
rounded and unarmed and smaller denticles on interstriaeinterstria:
longitudinal spaces along the elytra between the striae, which is not as<br /> impressed and bear smaller punctures.
1 and 3.

May be confused with

Xyleborinus exiguus, X. huifenyinae, and X. tritus

Distribution

Indonesia (Java, Sumatra), East & West Malaysia, New Guinea, Thailand

Host plants

recorded from small trees in several families, including palms (Arecaceae) (Beaver et al. 2014)

DNA data

specimens not available for sequencing