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CONTENTSAbstractPager.10.2Index to insects and Timber species 91 r.10.8I. Introduction r.10.3II. Materials and MethodsIll. Resufts and DiscussionPart A. Insect borers of major timber speciesPart B. Ctassification, biology ercd host range of borersIV. ConclusionsV. Referencesr.10.46 r.10.564686 r.10.688 r.10.7Index to92
ABSTRACTAbout 100 commercially important timber species are beingextracted from the natural forests in Kerala and stored in depots. The storedtimber is often attacked by borers belonging to the insect order Coleoptera.In the present survey, about 53 species of beetles were recorded as pests ofone or more of 46 species of stored timber. These belong to the families,Cerambycidae, Bostrychidae, Lyctidae, Platypodidae, Scolytidae, Curculionidaeand Anthribidae.The major cerambycid borers collected in this study were, Batocerarufomaculata (attacking Bombax ceiba, Ceiba pentandra, Manoifera indicaand Syzygium cumini) ; Olenecamptus bilobus (attacking Artocarpushirsutus and Lagerstroemia microcarpa) and Xystrocera globosa (attackingAlbizia odoratissima).They generally attack the sapwood as well asheartwood of freshlv felled timber with intact bark.Borers belonging to the other families are small in size but often causeconsiderable economic loss. They generally attack the sapwood. Maximumdamage is caused to the low density timbers having marked sapwoodportion.Finished products such as match veneers, plywoods, packing caseboards, brush-handles, bobbins, photo-frames. etc.,made out of thesetimbers are heavily damaged in godowns and storage yards. The majorborers noticed during the present survey were : Dinoderus minutus,Heterobostrychos aequatis, Sinoxylon anale ( Bostrychidae) ; Lyctusbrunneus,Minthea rugicollis (Lyctidae); Platypus solidus, P. latifinis (Platypodidae);Xyleborus similis and X. interjectus (Scolytidae).The important timbersdamaged by these borers include, Ailanthus triphysa. Anacardium occidentale,Bombax ceiba, Ceiba pentandra, Canarium strictum. Erythrina indica,Hevea b rasil iensis, Mangife ra indica , Polyalt hia f ragrans, Te t rame lesnudiflora and Vateria indica.For easy identification of important borers, a pictorial key was preparedfor each borer family dealt with in this work.
Page 1: KFRI Research Report 10A SURVEY OF
Page 5 and 6: 3Control aspects of species injurio
Page 7 and 8: Fig. 1 . Map of Kerala showing coll
Page 9: 71. Aglaia elaeagnoidea (A. Juss.)
Page 13 and 14: Xyleborus simiiis Ferr.11(Scolytida
Page 15 and 16: 13galleries result in large excavat
Page 17 and 18: IFig. 4 - Round logs of Bornbox cci
Page 19 and 20: 17' i-I "Fig. 6 - A Xylarium specim
Page 21 and 22: 19this timber under long periods of
Page 23 and 24: Round logs are21heavi ly attacked b
Page 25 and 26: 23(Mathur and Singk, 1959). The maj
Page 27: 25E. grandis was tunnelled by Si/es
Page 30 and 31: Large borersSmall borers2826. Haldi
Page 32 and 33: 30Fig 14 - Hevea brasiliensis, heav
Page 34 and 35: Timber with and without bark are at
Page 36 and 37: 3434. Mangifera indica Linn.Anacard
Page 38 and 39: 36Mathur and Singh (1960-c) have li
Page 40 and 41: 38The small borer, Platypus solidus
Page 42 and 43: 40The small borers recorded here ca
Page 44 and 45: 42Mathur & Singh (1951) recorded 28
Page 47 and 48: 45Eucorynus crassicornis Fb.(An thr
Page 49 and 50: 47- Antennal club composed of a sin
Page 51 and 52: The scutellum is white.granulations
Page 53 and 54:
51The grubs are yellowish, active a
Page 55 and 56:
IIProthorax with lateral spines.Pro
Page 57 and 58:
55FAMILY BOSTRYCHIDAEMembers of thi
Page 59 and 60:
in timbers of Grewia tiliaefolia, F
Page 61 and 62:
I ~~~~~Elytra with a pair of teeth
Page 63 and 64:
9. Sinoxylon crassum Les. (Chart II
Page 65 and 66:
63in length. The body is covered wi
Page 67 and 68:
65a groove-like median line and pro
Page 69 and 70:
IApical declivity of elytraforming
Page 71 and 72:
The grubs are cream coloured and me
Page 73 and 74:
71Pronotum globular, conical in fro
Page 75 and 76:
IPro n o t u m h o od -1 i ke , t u
Page 77 and 78:
75pee tea(stem of Sphaerotrypes sp.
Page 79 and 80:
Chart VI gives a pictorial key for
Page 81 and 82:
Eyes confli~ent and median. Rostrum
Page 83 and 84:
striae and fringed with short ash-c
Page 85 and 86:
-Rostrum Idng, promincntand broaden
Page 87 and 88:
85The tips of antennal segments are
Page 89 and 90:
87Although more than 50 species of
Page 91 and 92:
89GARONER, J. C. M., (1938). lmmatu
Page 93 and 94:
Acalolepta rusticatrix (Fb.) -Acant
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