Leptotyphlinae

Grebennikov, Vasily V. & Newton, Alfred F., 2008, Minute larvae of Leptotyphlinae (Coleoptera: Staphylinidae): description of three genera with discussion on the monophyly and phylogenetic position of the subfamily as inferred from larval morphology, Zootaxa 1817, pp. 49-58 : 56

Key to the genera of Leptotyphlinae based on larvae

1. Antennal sensory appendage curved, longer than antennomeres 2 and 3 combined ( Fig. 20 ); urogomphi about as long as their width at base ( Fig. 30 ); mandibular seta and basal mandibular pore located at about same level with distal mandibular pore ( Fig. 18 ); baso-lateral setae on frontale located on about same level with large epicranial pores ( Fig. 18 ) ........................................................................... Mexican genus

1’. Antennal sensory appendage almost straight, shorter than antennomeres 2 and 3 combined ( Figs. 12 , 23 ); urogomphi about twice as long as their width at base ( Fig. 15 ); mandibular seta and basal mandibular pore located basad of distal mandibular pore ( Figs. 12 , 23 ); baso-lateral setae on frontale located basad of large epicranial pores ( Figs. 12 , 23 ) .................................................................................................................... 2

2. Nasale serrate ( Fig. 23 ); mala with apical projection seta-like in appearance, about half as wide as mala .. ................................................................................................................................................Chilean genus

2’. Nasale not serrate ( Fig. 12 ); mala with apical projection about as wide as mala itself..... Australian genus

Figures

FIGURES 18 – 24. Leptotyphlinae, larval morphology of the undescribed genus from Mexico (18 – 22) and undescribed genus from Chile (23, 24). 18, 19, 23, 24 — head, dorsal (18, 23, 24) and ventral (19) (left antenna and right mandible omitted); 20 — right antenna, dorsal; 21 — nasale, dorsal; 22 — left maxilla, dorsal.

FIGURES 25 – 31. Leptotyphlinae, larval (25 – 30) and adult (31) morphology of the undescribed genus from Mexico. 25, 26 — abdominal segment VI, dorsal (25) and ventral (26); 27 — pro-, meso-, and metathorax, left lateral (legs omitted); 28 — left fore tibiotarsus and claw, posterior; 29, 30 — abdominal segments IX (with indistinctly articulated short urogomphi) and X, ventral (29) and dorsal (30); 31 — aedeagus.

FIGURES 12 – 17. Leptotyphlinae, larval morphology of the undescribed genus from Australia. 12, 13 — head (left mandible, right antenna and maxilla omitted), dorsal (12) and ventral (13); 14 — right foreleg; 15, 16, 17 — abdominal segments VIII, IX (with urogomphi) and X, dorsal (15), ventral (16) and lateral (17).