Hemimetabolus insect which is noctural and sanguivorous is
Cimex
The insect with incomplete metamorphosis have three stages in the life history : egg, naiad( young) and adult. Development with incomplete metamorphosis is known as Hemimetabolus insect.
A. Cimex- Hemimetabolus insect.
B. Musca- Holometabolus insect.
C. Anopheles- Holometabolus insect.
D. Apis- Holometabolus insect.
So, the correct answer is 'Cimex'.