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About Blattamann

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  • Birthday 02/12/1969

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    Oxford, UK
  • Interests
    Cockroach taxonomy, ecology and rearing

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  1. Cameron Highlands, Malaysia = possibly Morphna near badia Rotten bark of a dead tree in Kemensah Heights, Malaysia = Morphna sp Humid leaf litter, ground dweller - Kemensah Heights, Malaysia = probable immature of above Rhypharobia is only found in Afrotropical region. cheers D
  2. Hi all, having just read the string on 'bloated' cockroaches I thought I'd add my thoughts. The 'worm' emerging fro the male Gromphaddorhina is part of the male genitalia, referred to as the 'genital hook' or 'L3'. It is an eversible tube with a short sclerotised hook at the apex, the shape of which can help to identify some species complexes. If you squeeze hard, you can make this tube 'pop out' of most members of the Blaberidae. The genitalia for the other families do not have this tube, but a similar and more sclerotised hook. The cause of the bloating is probably bacterial. One of the
  3. Hi, there are a few papers on the culture of three Ectobius species found in th UK, see below. In the Uk the Ectobius are known as the tawny E. pallidus; the dusky E. lapponicus and the lesser E. panzeri. The problem with common names is that each country has their own, which in the days of international communication through the web makes these 'local' names misleading and confusing. If you ask me about E. pallidus I can tell you much, ask me about the 'spotted Mediterranean cockroach', I can tell you very little. Brown, V.K. 1973. Collection and culture of field-dwelling cockroaches for
  4. Hi, several years ago I compiled an annotated list and bibliography of 'pest' cockroaches, its somewhat out-of-date, but have posted the short version (species list) below. Some of these species are pests within a restricted area e.g. single area within a country, while others are widespread circumtropical pests. If we included the peridomestic species in this list it would be far greater, I have listed those which at some point have been published as a pest within buildings (human dwellings plus commercial premises). As to 'what do roaches do for us' question, they are indeed an important
  5. There are approximately 4,500 described species and probably as many undescribed. As pests, there are currently about 40 species recognised as 'pest' species. cheers Darren
  6. Hi, The D. paulinoi, certainly in the UK stock originated in Windhoek, Namibia, where they are synathropic especially in the rains and, and are often a nusiance in houses. They are aposomatic in colouration, nymphs are gregarious to emphasize their colour and can be found in large agregations. They produce a benzoquinone defence secretion, which although not fatal can cause minor skin burns, ulceration of the mouth and blurred visiion. It is lilley to have evolved against mammal anti-predation. The simplest way of determining if a female is adult or not is to check whether she has styles o
  7. Blattella vaga Hebard, peridomestic but not regarded as a pest as such, adults may fly to light
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