Experts warn of venomous Asp Caterpillar popping up around Houston

Southern Living. Email desk wtsp. Keep away. Southern flannel moth pupa, Megalopyge opercularis , male, ventral view showing appendages and eyepieces. The rami of the antennae of females are so short that the antennae appear almost thread-like. This email will be delivered to your inbox once a day in the morning. Economic and Medical Importance Back to Top Occasionally, in outbreak years, puss caterpillars are sufficiently numerous to defoliate some trees Bishopp Chelsea Tatham.

Southern flannel moth pupa, Megalopyge opercularis , male, lateral view showing abdominal post-spiracular appendages. Some larvae wander off the host plant and are often found on adjacent buildings. The immature stages of flannel moths are caterpillars which are clothed with fine hairs and venomous spines. The spines, when brushed against the skin, produce a painful rash or sting. The exuviae also likely provide some nutrition to the larvae.

Puss caterpillar, Megalopyge opercularis ventral view showing auxillary prolegs without crochets. After the outer layer of silk is laid down, larvae remove the soft hair from their bodies and pack it into the hump at the top of the cocoon and then add another inner layer to the cocoon.

Watch Caterpillars Transform Into Butterflies. Princeton Univ. Asps and Other Stinging Caterpillars. Local News. Foot NC.

Eggs of the tachinids are laid externally on the puss caterpillars. Megalopyge opercularis J. Eye injuries should also be referred to a specialist immediately. Avoid reaching into dark closets, boxes or other places where spiders may live without looking first.

Watch out for potentially dangerous Asp caterpillars spotted around Houston - Houston Chronicle

Eggs are laid in single or double curved rows occasionally in patches on foliage or small twigs and are covered with hair from the under side of abdomen of the female. Their color varies from yellow or gray to reddish-brown, or a mixture of colors. Hyposoter fugitivus Say Lanugo retentor Brulle Hyposotor fugitivus attacks and kills young larvae Khalaf Immobilize bitten extremity. Late instars have a hairy tail. Ever heard of the Southern flannel moth Megalopyge opercularis?

The creatures are covered with gray or brown hairs. As the cocoon ages and weathers, this front part collapses to form a flattened silk pad on the substrate in front of the operculum. Tachinid puparial shells inside old Megalopyge opercularis cocoon. If you would like to receive Updates automatically, as they are posted, subscribe via RSS feed or by entering your email address in the "Subscribe for Insect News" box below. Clinical Toxicology. CABI Publishing. It may resemble a furry Tribble from "Star Trek," but these poisonous caterpillars are far from gentle and cuddly.