Matsucoccus matsumurae (Kuwana)



Common name

Japanese pine bast scale

Field characters

Body oval, brownish red; immature stages amber yellow to grayish yellow; crawlers yellow. Forming a white ovisac behind the adult female that covers the tip of the abdomen. Males are present and common. Eggs are laid within ovisac. Occurring under the bark of the host.

Validation characters

Dorsal bilocular pores 6 to 7 μ long; apical cluster of multilocular pores, composed of 50 to more than 125 pores; dorsal cicatrices restricted to dorsum, in 5 or 6 segmental rows, with 180 to more than 250 on body; trochanter with 1 seta; enlarged setae on antennal segments 6 to 9. Other characters: 7 pairs of abdominal spiracles, similar to thoracic spiracles; without distinct anal opening; tarsi 2-segmented; antennae with reticulate pattern; basal antennal segment noticeably longer than other segments; with 9 antennal segments; coxa divided longitudinally; without campaniform sensilla on tarsus; with 2 capitate claw digitules.


Matsucoccus matsumurae is very similar to M. pini (Green) by having numerous multilocular pores and dorsal cicatrices and 2 enlarged setae on antennal segments 6 to 9. Matsucoccus matsumurae differs by having dorsal bilocular pores 6 to 7 μ long (10 to 12 μ long in M. pini).

U.S. quarantine notes

This species was not intercepted at U. S. ports-of-entry between 1995 and 2012, but it had been intercepted at least 5 times before that. We have examined specimens taken in quarantine from Japan (Pinus). It occurs on several species of pine in the Palaearctic zoogeographic region; it also has been introduced into the Nearctic area, where it has been recorded as M. resinosae, which is synonym of M. matusumurae. No other species of Matsucoccus have been taken in quarantine at U.S. ports-of-entry.

Important references

Foldi2005; Koszta1996; McClur1986; YoungHuRe1976.

Scalenet catalog and citation list

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  Matsucoccus matsumurae   Illustration by Miller

Matsucoccus matsumurae
Illustration by Miller

  Matsucoccus matsumurae

Matsucoccus matsumurae