New Pest Response Guidelines - aphis - US Department of Agriculture

Identification
Dendrolimus punctatus
Adults
Adult wingspan is approximately 50 to 80 mm, the females typically larger
than the males (Ciesla, 2001). Males measure in length from 21 to 32 mm, with
a wingspan of 38-62 mm. Female length is between 20 to 32 mm long, with a
wingspan of 42 to 80 mm (CABI, 2011b). In coloration, the forewings are
medium, dull grey or brown (Ciesla, 2001 with 5 lines including an
antemedial, medial, double postmedial, and a submarginal line interrupted into
dark brown series of spots (Matsumura, 1926a). Additional descriptions of
these wing markings from CABI include:
The front wings are longer and narrower than the hind wings. From the
base to the tip of the front wing, there are a series of transverse marks or
dark stripes. The outer stripe is dentate. The middle stripe is weakly
double-lined. The white spot at the end of median cell of the front wing is
small. There is a dark spot in the middle of the hind wing. The hairs on the
wing border are greyish-white or greyish-brown. There is a dark curved
band underneath the wings. (CABI, 2011b)
The antennae are pectinate (CABI, 2011b) with short branches (Matsumura,
1926a).
The genitalia are important in distinguishing the MPC from other Dendrolimus
spp., especially in the male where the minor harpe is entirely wanting
(Matsumura, 1926a) or slender and very sharp, rarely more than half the length
of the major harpe (CABI, 2011b). A single row of small teeth runs along the
outer edge of the chitinized portion of the clasper (CABI, 2011b; Matsumura,
1926a).
3-6 Dendrolimus Pine Moths 12/2012-01