Amasa cylindrotomica

Taxonomic history

Pseudoxyleborus cylindrotomicus Schedl, 1939b: 40.

Xyleborus cylindrotomicus (Schedl): Schedl, 1942c: 6.

Xylosandrus cylindrotomicus (Schedl): Wood, 1989: 177.

Amasa cylindrotomica (Schedl): Dole and Cognato, 2010: 525.

Synonyms

Xyleborus semitruncatus Schedl, 1942c: 35. Schedl 1951a: 79; Wood 1989: 177.

Xyleborus truncatellus Schedl, 1951a: 79. Kalshoven 1959a: 95.

Xyleborus jucundus Schedl, 1954a: 138 (new name for Xyleborus truncatellus Schedl, 1951 nec Schedl 1949Schedl 1949:
Schedl KE. 1949. Neotropical Scolytoidea. I. 97th Contribution to the morphology and taxonomy of the Scolytoidea (Col). Revista Brasileira de Biologia 9: 261-284.). Kalshoven 1959a: 95.

Diagnosis

2.1 mm long (n = 1); 2.00 times as long as wide (Sittichaya et al. 2019Sittichaya et al. 2019:
Sittichaya W, Smith SM, Beaver RA. 2019. Ten newly recorded species of xyleborine ambrosia beetles (Coleoptera, Curculionidae, Scolytinae, Xyleborini) from Thailand. ZooKeys 862: 109-127. https://doi.org/10.3897/ zookeys.862.34766). This species can be distinguished by its minute size, stout form with the pronotumpronotum:
the dorsal surface of the thorax
approximately as long as the elytra; elytralelytral:
pertaining to the elytra
declivitaldeclivital:
pertaining to the elytral declivity
surface shagreenedshagreened:
covered with a closely-set roughness, like shark skin
, dull, glabrousglabrous:
smooth, devoid of vestiture
; and antennalantennal:
pertaining to the antennae
club type 5.

May be confused with

Amasa opalescens

Distribution

Indonesia (Java, Sumatra), Thailand

Host plants

Recorded from Syzygium aromaticum (Myrtaceae) (Sittichaya et al. 2019Sittichaya et al. 2019:
Sittichaya W, Smith SM, Beaver RA. 2019. Ten newly recorded species of xyleborine ambrosia beetles (Coleoptera, Curculionidae, Scolytinae, Xyleborini) from Thailand. ZooKeys 862: 109-127. https://doi.org/10.3897/ zookeys.862.34766).

DNA data

specimens not available for sequencing