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.
30 Rock's Jack McBrayer also makes his Big Bang debut as Randall, Penny's brother who has infamously been mentioned on the series as a drug-making criminal. MORE: 'Big Bang Theory' Welcomes Katey Sagal and Jack McBrayer as Penny's Family Members The Big Bang Theory's season 10 premiere, which airs Monday Sept. 19 on CBS, is bringing everyone's families together to celebrate Penny and Leonard's wedding ceremony.