a survey of beetles damaging commercially impotrtant ... - Icrisat.ac.in

More documents

Recommendations

Info

22Debarked timber of this species was found to be highly susceptibleto the above borers.About 16 species of borers (Browne, 1958) have been recorded on thistimber which is used in veneer and plywood industries. These includePlatypus uncinatus and Xyleborus andrewesi which have been recorded on othertimbers in the present study. Under prolonged periods of storage thesespecies may become serious pests.19.Large borersNilSmall borersDysoxylum malabaricun Bedd. ex HiernMeliaceaeXyleborus interjectus Bland. (Scolytidae)X. similis Ferr. ( ,I )These borers cause minor damage to the sapwood.No information on the borers of this timber is available in the literature.However, the related tree species D. binectariferum is known to be attacked byXyleborus tegolensis (Scolytidae), Stenoscelis ruptus (Curculionidae), Diapusquinquispinatus (P latypodidae). Cerobotes sexsulcatus and C. sumatranus(Brenthidae) (Mathur & Singh, 1959). The major use of this timber is inveneer and plywood industries, for making furniture, packing cases etc.Large borersNil20. Elaeocarpus tuberculatus Roxb.ElaeocarpaceaeSmall borersPlatypus solidus Wlk. (Platypodidae)Detailed observation on the damage caused by borers could not bemade since this timber was scarce in depots during the period of study.Damage caused by P. solidus was minor and confined to the outer sapwood.Literature records of borers on this timber include Epepeotes uncinatus(Cerambycidae), Xylothrips flavipes and Thamnurgides cardamomi (Scolytidae)
23(Mathur and Singk, 1959). The major use of this timber is in buildingconstruction and for making plywood, match splints, packing case boards etc.Further studies are required to establish the extent of borer damage.Large borersNilSmall borers21. Erythrina indica Lamk.FabaceaeSinoxylon anale Les, (Bostrychidae)Xyleborus interjectus Bland.(Scolytidae)X. similis Ferr. ( I* )Crossotarsus indicus Strohm. (Platypod idae)Mecistocerus mollis Fst.(C urcu l ionidae)Stored logs are very susceptible to damage by Xyleborus interjectus andX. similis (Fig. 10). The galleries reach as far as the centre of the logs convert-ing it into a mass of interconnected galleries filled with frass within a shortperiod. Occasionally, Platypus solidus was also noted to cause such type ofdamage. Sinoxylon anale and S. conigerum generally confine their attack in theouter sapwood (upto 5 cm. depth). The significance of Mecistocerus molliswhich was collected from an old borer hole could not be established. Sagrafemorata(Chrysomalidae) was found to bore in live branches resulting in theformation of cankers. Jrachelizus politus (Brenthidae) breed under loose barkand rotten timber,The colydid, Teredolaemus similis was collected from logs damaged byX. similis and X. interjectus. J. major a related species is known to bepredatory on Scolytidae (Beeson, 1941).Duffy (1968) and Mathur &Singh (1959) have recorded 21 speciesof borers on this timber which is extensively used as a pulpwood in Kerala.This include the cerambycids, Botocera rubus, B. rufomaculata, Stromatiumbarbatum and Sthenias grisator, all of which occur in Kerala. Besides,Remphan sp. (Abraham et al. 1978) and Acanthophorus serraticornis (Jobson,1981, Pers. Comm ) have been noted to attack standing trees of E. indicalocally.
Page 1 and 2: KFRI Research Report 10A SURVEY OF
Page 3 and 4: ABSTRACTAbout 100 commercially impo
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: Round logs are21heavi ly attacked b
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
show all

a survey of beetles damaging commercially impotrtant ... - Icrisat.ac.in

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?