. Economic entomology . Trombidium holosericeum, Tronibidium fuligmosum, hairs on upper side. liairs on sides. bidium. In these insects the hairs with which the body is clothed are peculiar. Those on the back have beads like pins, and are barbed with numerous spinules; those on the under side are also spinulose, but are sharp-pointed, as shown in the woodcut. We have been much puzzled to know whether the Trombidium phalangii of Duges is really distinct from the Trombidium holo- sericeum of authors or not, and the impression that remains on our mind is that they are one and the same. There are
. Economic entomology . Trombidium holosericeum, Tronibidium fuligmosum, hairs on upper side. liairs on sides. bidium. In these insects the hairs with which the body is clothed are peculiar. Those on the back have beads like pins, and are barbed with numerous spinules; those on the under side are also spinulose, but are sharp-pointed, as shown in the woodcut. We have been much puzzled to know whether the Trombidium phalangii of Duges is really distinct from the Trombidium holo- sericeum of authors or not, and the impression that remains on our mind is that they are one and the same. There are three st}^les of figure of a Trombidium given by different authors, which must be either this or closely allied to it. There are tv/o extreme ones—the one figured by Duges with slight and slender legs. This is what we find in this country, and it is figured above, and it is what is usually known as holosericeum here. Then there is the figure of T. holosericeum given by Walckenaer (Apteres), in Grifiith's Cuvier's Animal Kingdom, and in Guerin Meneville's Icones, and no doubt other works that may have copied from them, as being reliable authorities. This figure differs from Duges's in having the legs thick, and them as well as the body very hairy. In one or more of these works there is also given a copy of Duge's's T. phalangii as another species. Lastly, there is the figure of T. holosericeum in Hermann's Memoire Apterologique, T 2
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