260 DESCRIPTION OF LASPEYRESIA STIRPICOLA 
hairs arising from brownish tubercles. When full fed the larva makes a silken 
gallery and pupates in it. The pupa (figs. 6, 7) is hght brown in colour, with black 
eyes and prominent thoracic segments. The abdominal segments have two rows 
of short spines near each end, the anal segment has a few short hairs. 
Parasites. In a caterpillar collected from Daltonganj three triangulinids of 
Strepsiptera were discovered, two of them in the region of head and one in meso- 
thorax. The caterpillar was cleaned in potassium hydroxide and stained with 
eosin. So far this is the single instance of its kind, examination of adults has not 
revealed any triangulinids or adult Str epsiptera. 
Status. During a visit to Daltongan] in May 1925, the abnormal presence of 
these lepidopterous larve, boring into the shoot of pollarded Butea frondosa (Palas), 
was first noticed. Practically every Palas tree in the locality was more or less 
affected and in some branches as many as seven borers were found. The growth 
is stunted, galls are produced, bark becomes rough and hard and there is consi- 
derable outflow of resinous matter and the tree becomes unfit for propagation of 
lac. This insect may well be regarded as a serious pest of Butea frondosa, a tree 
used extensively for lac cultivation. 
EXPLANATION OF PLATE XXIV. 
Laspeyresia stirpicola, Mey. 
1 Borer. ‘ ° : ; . Dorsal view . s ; eG 
2 Borer, immediately diets pupation . Lateral view . . ; 1 OSES 
3 Mandible of the borer . 5 : : ante x 120 
4-5 Spiracles of the borer . : 5 5 aenye x 300 
6 Pupa . ‘ 3 : ; ; . Dorsal view . ‘ < », re 4eh6 
i, Pupa : F ; : ; . Ventral view : : Sree 
8 Adult moth . 3 ; ; Dorsal view . : : = oxle 
9 Triangulinids within the nee a of the ae 
(much enlarged). 
10 Triangulinid . : . . . - Dorsal view . . . . «7300 
