Species 5u.
An adult and pupal exuvia reared from a larva should be in the Canadian National Insect Collection. It shows many features common to species of the C. decorus group but differs in some characters.Adult: This adult male was probably measured by J. E. Sublette and the details may be in his laboratory books of Chironomus species.
Male: Only photographs of the male hypopygium are available. These do not show the setae of TIX. The most obvious difference from other known species of the decorus-group is the gonostylus which is moderately swollen but narrows only a little over the posterior third, while other species narrow quite markedly. The Superior volsella is moderately darkened and of D-type of Strenzke (1959), similar to that of C. bifurcatus. The anal point is quite broad and blunt-ended, much longer than the Inferior vosellae which barely reach the mid-point of the gonostylus.Female: Not known. Pupa: The cephalic tubercles are short and broad, barely longer than the width at the base, like those of C. decorus (see figure of that C. decorus species), but frontal warts are absent. The spur of segment VIII has about 3 closely appressed spines. Larva: not known. Found: Ontario - Bear Creek (45.37°N, -75.47°W), Carlsbad Springs, Carleton Co. The male hypopygium is closest to those of males raised from Lake Michigan and assumed to be associated with C. mozeleyi or C. winnelli. However the larvae of this species are from amongst weeds at the side of a shallow creek. See also C. decorus, C. bifurcatus, C. sp. b, C. sp. c, C. sp. j, C. sp. 2a, C. sp. 2b, C. 'butleri', C. sp. 2n, C. decorus of Rothfels and Fairlie (1957) (see also above); C. sp. 3h, C. sp. 3i, C. sp. 3j, C. sp. 3r, C. harpi, C. blaylocki, C. mozleyi, C. winnelli, C. sp. 4l, C. sp. 4k.[ Return to Index| Go to References ] |