Cotton seed bug - Oxycarenus hyalinipennis
EEffective: June 13, 2011
Taxonomic Position:
Hemiptera : Lygaeidae
Pest Type:
Insects
Pest Code (NAPIS):
IQALAWA
This pest is a member of the following lists:
These Approved Methods are appropriate for:
2024, 2023, 2022, 2021, 2020, 2019, 2018, 2017, 2016, 2015
Major Hosts identified in the Host Matrix:
Cotton
This list includes important economic or environmental hosts but does not represent all major hosts of the pest. Check CAPS pest datasheet for complete list of hosts.
Human and Animal Pathogens Transmitted:
Not known to transmit any human or animal pathogens.
Plant Pathogens and Organisms Vectored:
Not known to vector any pathogens or other associated organisms.
Survey
Approved Method(s):
Method |
Product Name / Instructions |
NAPIS Survey Method |
Visual |
Visual inspection, sweep netting, or beat sheeting of host plants |
3031 - General Visual Observation
|
Method Notes:
Visual surveys and using tools such as sweep nets and beat sheets on potential hosts are the only methods to detect CSB because there are no trap options for this species. There are no CSB-specific pheromone lures or traps available for surveys or population reduction and there are no non-specific traps that capture this species.
Symptoms:
Host plants with brown leaves and stipple marks from feeding. Note: This type of feeding damage is not specific to CSB, but it can help to identify an area for survey.
Shriveled and discolored seeds inside cotton bolls. This can be a difficult symptom to find because the cotton plants show no external signs of damage.
Aggregations of adults and nymph-stage CSB. These insects commonly group in tight clusters, especially in seed pods or bolls. CSB resemble fleas in infested bolls. Look for small black or brown bugs running through the cotton.
Aggregations of CSB produce a pungent odor and crushed CSB stain the lint of cotton pinkish.
Identification
ID/Diagnostic: Morphological
Morphological examination of adults is needed to confirm identification. See Brambila (2020) for the field screening aid and Samy (1969) for the full dichotomous key. Final identification by an expert can be made by observation of the male genitalia and the externally visible parts of the parameres but may require dissection and examination of adult male internal structures (See Notes in this section).
Mistaken Identities:
Not present in the U.S.: Oxycarenus albidipennis, O. bokalae, O. congoensis, and O. pallidipennis. O. hyalinipennis can be differentiated from O. boklae by examining the clavus which will be either completely or mostly pale, brick-red to white, whereas in O. bokalae the clavus will be almost uniformly dark brown or black (Slater et al., 1994). O. albidipennis, O. pallidipennis, and O. congoensis can be differentiated by their orange-red coloration of the first five abdominal segments (Slater et al., 1994).
Notes:
The keys of Samy (1969) and Péricart (1998) rely primarily on externally visible characters including the number of spines on the profemur, coloration of the body, wings, and antennae, and shape of the opening of the male pygofer (or genital capsule). In the field, a surveyor can make a preliminary identification using external characters. However, to make a final identification, examination of the male genitalia including the shape of the pygofer opening (visible without dissection) and the externally visible parts of the parameres is likely necessary. In some cases, a final identification may require dissection and observation of the internal parts of the male genitalia, including the subgenital plates and remaining parts of the parameres.