It was found in Oklahoma County in 2015. So far, no cultivars of crapemyrtle are known to have high levels of resistance to the scale. Crapemyrtle bark scale. Heavy infestations are easily seen due to abundant black sooty mold and patches of the white or gray scales on the trunk, branches, and twigs of crapemyrtle. Monitor for ants moving up and down crapemyrtle trees. Crape myrtle bark scale (CMBS) insect has been found in Fauquier. Any stage of the scale can overwinter, especially the nymphs, which can be found nearly year-round. One adult, several pre-pupae, and many pupae of twice-stabbed lady beetle after feeding on an infestation of Acanthococcus lagerstroemiae (Kuwana). Map: https://www.eddmaps.org/cmbs/distribution.cfm. %%EOF Madden passed away Wednesday, Dec. 16, 2020, at an Oklahoma City hospital. When one of the females is crushed, a pink blood-like fluid is released. Figure 6. Chen Y, Merchant M, Vafaie E, Gu M, Robbins J. Figure 4. 29 Buy from reputable nurseries who are knowledgeable about crapemyrtle bark scale and inspect outgoing plants (Robbins et al. 18, No. Wang Z, Chen Y, Gu M, Vafaie E, Merchant M, Diaz R. 2016. However, this scale has a different host range that is not known to overlap with that of crapemyrtle bark scale. 2016). Other nymphs form a white, felt-like sac and develop into prepupa and then to pupa further inside, eventually pupating to emerge as tiny, winged adult males (alates). Figure 13. Based on regional climates in the U.S., scientists have generated predictions of where this insect may spread. Under - magnif ication, adult females are pink and measure about 2 This honeydew, in t… If an infested plant is found in a new area, it may be appropriate to destroy the plant rather than attempt treatment. Scientists were unsure if a nearly identical species, the azalea bark scale, had begun attacking a new host plant or if this was a newly introduced species. It is unknown how the scale life cycle might adapt in Florida, and more research on the life cycle is in progress to see if there is a predictable pattern. A relatively-new (first reports in 2004 in Richardson) insect pest, Eriococcus lagerostroemia, is attacking crape myrtles in North Texas.Crape Myrtle Bark Scale was very likely introduced from Asia and has been spreading around the Dallas-Ft. Worth area and north into Oklahoma. However, it is not yet clear what role this plant may play in the spread of crapemyrtle bark scale. Once the mated females produce their ovisacs (egg-containing capsules) and lay eggs, they die. Crapemyrtle bark scale is an exotic insect pest from Asia. h�b```f``Z���� l� ̀ �,@Q���=��|8�����2�����^dz��I�No�CI�XGG30x������6��4��# -�`3L0F1�7� However, the appearance of white scale bodies on bark and the pink liquid associated with crushed scales are diagnostic characteristics of CMBS. Nymphs produce copious amounts of honeydew, a sugary, sticky excrement, which accumulates on any surfaces beneath where the insects feed. The crape myrtle bark scale, Eriococcus lagerstroemiae Kuwana, is a newly introduced insect pest of crape myrtle, Lagerstroemia spp. Merchant ME, Gu M, Robbins J, Vafaie E, Barr N, Tripodi AD, Szalanski AL. 2015, Wang et al. Cultural control: Some observations suggest that crapemyrtle bark scale infestations may be correlated to shade levels, adding credence to the recommendation that crapemyrtles should be planted in full-sun locations (Cai et al. Figure 12. Any crapemyrtle covered in sooty mold should be inspected to see if the cause is bark scale or another insect that also produces honeydew and sooty mold, such as crapemyrtle aphid (Tinocallis kahawaluokalani). A mass of pink eggs may be seen if the white covering is pulled away (Robbins et al. On horizontal branches, they tend to aggregate on the underside, away from sun exposure (Gu et al. Photograph by Erfan Vafaie, Texas A&M AgriLife Extension. Additional research on crape myrtle phenology, which is the timing of bud break, first bloom and full bloom, if proven to be correlated to scale activities, will also help time the application on crawlers. Resources - Layton, B. Crape myrtle flowers do not have nectar, but their “feeder pollens” are … 2016. Each female lays about 60 to 250 eggs, which may over-winter within their ovisacs, and then hatch during mid- to late April to May. The most effective of these seem to be twice-stabbed lady beetles, such as Chilocorus stigma and Chilocorus cacti (Cai et al. These aphids feed on the leaves and tender green shoots, but not woody parts of the plant, whereas crapemyrtle bark scales are very rarely seen on the leaves (Layton 2015). As with most insects, there are several life stages and the appearance of CMBS changes with the stages. Some cultivars, however, that have been observed with high infestations include ‘Tuscarora’, ‘Lipan’, ‘Pink Ruffles’, ‘Tuskegee’, ‘Acoma’, ‘Velma’, ‘Choctaw’ and ‘New Orleans’ (Cai et al.