Does a ladybug bite

Yes. I have been bitten several times. Each year our home gets invaded in early autumn (we live in Wisconsin). We get the typical red ladybugs and the Asian ones which are orange (both with black spots). For the remainder of the winter the orange ones remain in the house coming out seemingly one or two at a time on a regular basis. We have to check the bed every night or we can be assured of being awakened by the rather painful bite. Unlike horseflies and mosquitoes, these insects don't need any time to make the bite noticeable. Almost the second they land or crawl on they bite. Also unlike the horsefly and mosquito, the bite doesn't seem to leave any bump or itch, it just hurts.