Ib tug horsefly yog kab uas belongs rau tsev neeg yoov. Muaj ntau hom brakes. Horseflies nqus cov ntshav ntawm cov tsiaj los yog tib neeg pub rau. Lawv yog hais txog 1-2 cm siab thiab tsuas muaj ob tis.
Horseflies nteg qe me me. Ib tug larva hatches los ntawm lub qe. Thaum no maggot tau noj nws cov puv, ib tug tshiab horsefly tsim los ntawm nws. Lawv tuaj yeem dhau los ua kev ntxhov siab tiag tiag ntawm cov hnub kub, muggy nyob rau lub caij ntuj sov. Horseflies tuaj yeem kis kab mob nrog lawv cov sting.
Yog hais tias horsefly stings, koj tuaj yeem hnov nws tam sim ntawd vim qhov mob hnyav heev. Horseflies nyiam hws thiab yuav txawm tom los ntawm khaub ncaws. Lawv tshwj xeeb tshaj yog nyob ze nyuj lossis nees. Cov tsiaj khaws cia cov kab tsuag nrog lawv cov tails. Lawv siv lawv pob ntseg ntawm lawv lub ntsej muag. Cov nyuj tshwj xeeb tau muaj kev vam meej nrog qhov no, suav nrog hauv thaj tsam ntawm lub qhov muag.