Lohmannellinae, Viets, 1927

Abé, Hiroshi, 2021, Taxonomic review of the subfamily Lohmannellinae (Acari: Trombidiformes Halacaridae) with morphological comparisons among genera, Zootaxa 4980 (2), pp. 201-255 : 208

Key to Genera of the Subfamily Lohmannellinae

1a. Palpi two-segmented (P-2, P-3, and P-4 fused into a single segment)............................................. 2

1b. Palpi four-segmented.................................................................................. 3

2a. Lc I with umbrella-like arranged large tines. Lc II–IV sometimes with a comb and with minute accessory process. Gnathosoma base with a pair of setae. Rostrum slender and parallel-sided, not widened distally.............................................................................................................. Scaptognathides Monniot, 1972

2b. Lc I–IV without a comb, but sometimes with minute accessory process. Gnathosoma base without maxillary setae. Rostrum robust and spatula-shaped, widened distally........................................ Scaptognathus Trouessart, 1889

3a. Lc I with a row of large tines. Lc II–IV with a comb and with minute accessory process. Rostrum longer than the palpi.................................................................................... Xenohalacarus Otto, 2000

3b. Lc I–IV without a comb, but sometimes with minute accessory process. Rostrum not longer than the palpi............. ... 4

4a. P-2 with two setae. PE with at least four setae....................................... Lohmannella Trouessart, 1901

4b. P-2 with one seta. PE with three setae.............................................. Porolohmannella Viets, 1933