Before the summer turns to winter: the third labidostommatid genus from Baltic amber has subtropical kin

postdiscoidal area with two rows of cells just after discoidal triangle and three more distally; a distinct convex trigonal planate, short and zigzagged; only basal part of

palpus as long as proboscis and first labial palpomere; v) labial palpus with three palpomeres and ventral scale brush, third palpomere as long as second palpomere, longer than

The wing venation of this fly is typical of the limoniid genus Trentepohlia Bigot, 1854, subgenus Mongoma Westwood, 1881 on the basis of the following characters, modified after

(2012, 2013a, 2013b) dedicated to the identification of every micro- inclusions in French Cretaceous ambers devoid of arthropod inclusions, have never observed pollen grains in

55% of wing length; radial veins brown; 13 dorsal setae on portion of R basal of fork into R1 and R4+5, no dorsal setae on R4+5, no dorsal setae on R1; posterior veins

Pterostigma short (1.6 mm long and 0.6 mm wide), covering three cells, and strongly braced by a very oblique (but straight) crossvein that is aligned with its basal side.

Dorsum with three plates, smaller paired anterior plates and a large unpaired posterior plate. Ante- rior plates with the postocularia and two pairs of glandularia, posterior plate

alpinus both share with other Acaricis species: anterior margin of prodorsum with median forked process, two pairs of ventral setae 4a; dorsal setae c1 is absent; the palps are