Papaya insects A Lecture To ToT trainees ( FFS) By Mr. Allah Dad Khan Provincial Coordinator IPM KPK MINFAL Pakistan

2. Papaya Injurious Insects
A
Lecture To ToT trainees
( FFS)
By
Mr. Allah Dad Khan
Provincial Coordinator
IPM KPK

4. Papaya mealybug
Paracoccus marginatus
Symptoms
Maelybugs on papaya
 Flattened oval to round disc-like insect covered in
cottony substance on tree; chlorosis, plant stunting,
leaf deformation, early leaf and fruit drop insects
attract ants which may also be present; insect colony
may also be associated with growth of sooty mold due
to fungal colonization of sugary honeydew excreted by
the insect
 Cause
 Insect
 Comments
 Insects have a wide host range; often tended by ants
which farm them for their sugary honeydew
secretions; transmit Cocoa swollen shoot virus
 Management
 Mealybugs can potentially be controlled by natural
enemies such as lady beetles but are commonly
controlled using chemicals; chemical pesticides may
also decrease populations of natural enemies leading
to mealybug outbreaks

5. Scale insects (White peach scale)
Pseudaulacaspis pentagona
Symptoms
Scale insects
 Scale insects cause damage by feeding on twigs,
branches and fruit, injecting toxins into the plant as
they do so; if the infestation is heavy, gumming may
occur on the bark and twigs or entire branches can be
killed; insects are flattened discs, or "scales" with no
visible legs; scales produce a white waxy coating which
eventually turns black (black cap stage)
 Cause
 Insect
 Comments
 Scale insects overwinter in the black cap stage; winged
adult males mate with females which retain their eggs
inside the body until they hatch
 Management
 Populations are often kept in check by natural
enemies, including predacious beetles and some
wasps - although broad-spectrum insecticides may
result in outbreaks of scale by killing off populations
of beneficial insects; trees can be sprayed with
horticultural oils when dormant which effectively kill
scales without damaging natural enemies


6. Scale Insect

7. Scale Insect

8. papaya fruit fly
scientific name: Toxotrypana curvicauda Gerstaecker (Insecta: Diptera:
Tephritidae)
Symptoms Adult female papaya fruit fly, Toxotrypana
curvicaudaGerstaecker
 The papaya fruit fly, Toxotrypana
curvicauda Gerstaecker, is the
principal insect pest of papaya
(Carica papaya L.) throughout the
tropical and subtropical areas of
the New World. The insect was
introduced into Florida in 1905,
most likely from the West Indies
on papaya shipments. It first
became established in the Florida
Keys and Miami, then spread
throughout the state wherever
papayas are grown. Papaya fruit fly
larvae and adults have been found
in Florida in every month of the
year

9. Larvae of the papaya fruit fly, Toxotrypana curvicaudaGerstaecker, in
papaya