Euwallacea testudinatus

Taxonomic history

Euwallacea testudinatus Smith, Beaver & Cognato 2020 (in Smith et al. 2020bSmith et al. 2020b:
Smith SM, Beaver RA, and Cognato AI. 2020b. A monograph of the Xyleborini (Coleoptera, Curculionidae, Scolytinae) of the Indochinese Peninsula (except Malaysia) and China. ZooKeys 983: 1-442. https://doi.org/10.3897/zookeys.983.52630): 258.

Diagnosis

2.8–2.9 mm long (mean = 2.86 mm; n = 5); 2.24–2.33 times as long as wide. This species is distinguished by the pronotumpronotum:
the dorsal surface of the thorax
subquadrate (near type 3) in dorsaldorsal:
of or relating to the upper surface; opposite of ventral
view, but only 0.89‒0.97 times longer than wide, and more strongly truncatetruncate:
appearing cut off or suddenly shortened
anteriorly; elytraelytron:
the two sclerotized forewings of beetles that protect and cover the flight wings
with a weak basalbase:
point or edge closest to the body; opposite of apex
carina, sides parallel in basalbase:
point or edge closest to the body; opposite of apex
two-thirds, then gradually incurved to broadly rounded apexapex:
point or edge furthest from the body; opposite of base
; declivitydeclivity:
downward slope of either the pronotum or elytra
beginning after basalbase:
point or edge closest to the body; opposite of apex
quarter, convexconvex:
appearing rounded
, weakly flattened across interstriaeinterstria:
longitudinal spaces along the elytra between the striae, which is not as<br /> impressed and bear smaller punctures.
1‒2 in apicalapex:
point or edge furthest from the body; opposite of base
quarter, declivitaldeclivital:
pertaining to the elytral declivity
strial punctures shallow, very coarse, striaestria:
punctures in rows, which may or may not be impressed to make grooves
2 very weakly impressedimpressed:
a depression in a surface
, interstriaeinterstria:
longitudinal spaces along the elytra between the striae, which is not as<br /> impressed and bear smaller punctures.
granulategranulate:
pertaining to a coarse, grainy surface texture
, interstriaeinterstria:
longitudinal spaces along the elytra between the striae, which is not as<br /> impressed and bear smaller punctures.
2 with 2 or 3 larger denticlesdenticle:
a small tooth, the sides of which are equal and the tip is above the middle of the base
in apicalapex:
point or edge furthest from the body; opposite of base
quarter, posterolateralposterolateral:
relating to end of the side part/portion
margin of declivitydeclivity:
downward slope of either the pronotum or elytra
carinate, never granulategranulate:
pertaining to a coarse, grainy surface texture
; and protibiaprotibia:
tibia of the first pair of legs
with 9‒11 socketed denticlesdenticle:
a small tooth, the sides of which are equal and the tip is above the middle of the base
.

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. semirudis, and E. velatus

Distribution

China (Yunnan)

Host plants

unknown (Smith et al. 2020bSmith et al. 2020b:
Smith SM, Beaver RA, and Cognato AI. 2020b. A monograph of the Xyleborini (Coleoptera, Curculionidae, Scolytinae) of the Indochinese Peninsula (except Malaysia) and China. ZooKeys 983: 1-442. https://doi.org/10.3897/zookeys.983.52630)

DNA data

specimens not available for sequencing