![]() ![]() lentus is superficially very similar in appearance to Chalcosyrphus piger (Fab): see Key provided in StN Keys volume. The adult insect is illustrated in colour in Bartsch et al (2009b), Colyer and Hammond (1951), Stubbs and Falk (1983), Torp (1984, 1994), van der Goot (1986) and Kormann (1988). Their larvae bore into wood, leaving a distinctive pile of sawdust-like powder outside their bore holes. The male terminalia are figured in Hippa (1978). In the collections of NMI and UM Determination Adult fungus gnats are about 1 10 to 1 8 of an inch long, slender, somewhat mosquito-like, with dark-colored antennae and delicate with long legs. Those in rotten wood and under bark may be predatory on other larvae those in damp places may. The larvae of the Trichius fasciatus beetle feed on dead, rotten wood. Beetles occur in almost any habitat occupied by insects. Umbellifers Crataegus, Galium, Rubus idaeus, Sorbus aucuparia Irish reference specimens 9 of the wood in the Kottenforst is deadwood. lenta larvae have also been found beneath the bark of Picea, by Kassebeer (1993). Larva: undescribed, but the species has been bred from damp, fungus-riddled rotten wood within the trunk base of an old, living Fagus and is included in the keys provided by Rotheray (1994), where it is distinguished from larvae of related genera and its fore body is figured. Zootermopsis laticeps, known generally as Arizona dampwood termite, is a species of termite in the family Archotermopsidae. ![]() Flight periodĪpril/June plus July at higher altitudes. at the edge of forest clearings also on the ground near fallen and felled trees. Running on foliage of bushes, Rubus fruticosus etc. ![]() Neither is it to be found in suburban gardens. common, Larvae in dead branches of various trees. It does not occur in the standard farmland landscape of green fields and hedges any more than in conifer plantations. 18, Cantharis decipiens, local, Larvae predatory in rotten wood, soil etc, 25.v, 13.vi. lentus has to be regarded as an anthropophobic insect in Ireland. This is presumably due to a lack of appropriate larval habitat, occasioned by plantation management practices employed and the lack of sufficiently mature trees. Although in continental Europe this species occurs in mature/overmature Abies/Picea forest it has not been found in British or Irish conifer plantations. Oak is absent from some Irish localities from which B.lentus has been recorded, but there is no indication that ash ( Fraxinus) or birch ( Betula) provide alternative larval habitat - sycamore ( Acer pseudoplatanus) or wych elm ( Ulmus glabra) may be involved. The scarcity of oak woodland in Ireland today makes mature/ overmature beech a significant contributer to the survival of B.lentus. In Ireland, this insect is primarily associated with mature/overmature oak ( Quercus) woodland, but will utilise old beech ( Fagus) when this is available and has been reared in Ireland from wet, fungus-riddled wood at the trunk-base of an old, living beech. Forest with overmature trees especially Fagus, Picea and Quercus and including evergreen oak forest. ![]()
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