Lepidoptera (butterflies and moths) are the only insects that have scaly wings. The wings are attached to the butterfly's thorax (mid-section). Veins support the delicate wings and nourish them with blood. Butterflies can only fly if their body temperature is above 86 degrees.
All of the members of Leonard's family are accomplished scientists, except for his younger brother Michael, who is a tenured law professor at Harvard University. Leonard's mother, Dr. Beverly Hofstadter, is a psychiatrist and neuroscientist. She has a personality almost identical to Sheldon's, including strict speech patterns, lack of social conventions, and attention to detail, and she is principally responsible for Leonard's difficult childhood.
Could this casting get any better?! It was just announced at The Big Bang Theory's 2016 San Diego Comic-Con panel that Katey Sagal will be playing mother to Kaley Cuoco once again as Penny's mom this fall, according to executive producer Steven Molaro. Sagal and Cuoco previously played mother and daughter on 8 Simple Rules, which ran from 2002 to 2005 on ABC.