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Thanks Cristophe! I have to agree but it keeps on bothering me....Size is very variable, i know. But i have seen hundreds of atricapillus in NL. In my collection average size is about 13 mm and none with red hair or bristles. Average of the red haired (7 specimina) is 17mm. All of these share red hair and bristles and golden brown dusting. I also caught a normal one but not in the broom field. It is against the odds. wish there was an expert who had been there to share the experience because i was convinced i collected an entirely other species than T. atricapillus. But when i used keys of Seguy and Engel i ended up there. On the left Redbeard male and on the right Normal male caught in the forest nearby. Please note difference in colour dusting thorax.