Lipoptena Nitzsch 1818

Addition to the key of Russian and European species of Lipoptena 1. One or two pulvilli reduced ............................................................................................................ 2 – Pulvilli normally developed ............................................................................................................. 4 2. All pulvilli reduced ....................................... ....................................... Lipoptena chalcomelaena – One pulvilla reduced .......................................................................................................................... 3 3. Body length longer than 2.4 mm. Wide eyes. Black and extremely hairy body and legs .................................................................................................................................. Lipoptena couturieri – Body length shorter than 2.4 mm. Narrow eyes. Not with extremely hairy body and legs ............................................................. ............................................................. Lipoptena capreoli 4. Body length shorter than 2 mm. Few mesonotum setae ................................................... 5 – Body length longer than 2 mm. Large number of mesonotum setae ........................... 6 5. Only longitudinal suture on the mesoscutum .................................... L. fortisetosa form A – Prescutellar and longitudinal sutures on the mesoscutum ..... ..... L. fortisetosa form B 6. Prescutellar and longitudinal sutures on the mesoscutum .......... .......... Lipoptena cervi – Only longitudinal suture on the mesoscutum ......................................................................... 7 7. Pleurite I without clear edges. Pleurite II large and round .... .... Lipoptena doszhanovi – Pleurite I with clear, straight edges. Pleurite II with a different shape ................................. ..................................................................................................................................... Lipoptena arianae