Identification Key to genera of adult lice in the family Enderleinellidae

1a. Antennae 5-segmented; abdomen with paratergal plates....................................................... 2

1b. Antennae 4-segmented; abdomen without paratergal plates (on Petaurista, Southeast Asia)....................................................................................................... Phthirunculus Kuhn & Ludwig

2a. Ventral head and first antennal segment each with a sclerotised plate bearing 3–5 large protuberances (on Glaucomys, North America)........................................................................... Microphthirus Ferris

2b. Ventral head and first antennal segment lacking plates and protuberances......................................... 3

3a. Thoracic sternal plate absent (on Petaurista, Southeast Asia)................................... Atopophthirus Kim

3b. Thoracic sternal plate present and distinct.................................................................. 4

4a. Abdominal segment 2 with a distinct ventral sclerite on each side (on various sciurids, North America, South America, Eurasia, Africa).......................................................................... Enderleinellus Fahrenholz

4b. Abdominal segment 2 lacking a distinct ventral sclerite on each side............................................. 5

5a. Abdomen lacking sternal and tergal plates (on various squirrels, Africa).............................. Werneckia Ferris

5b. Abdomen with distinct sternal and tergal plates (on Hylopetes, Southeast Asia).................. Hylophthirus new genus