Chromosome Studies in a Species ofTelmatoscopus Sp

Some Special Forms of Polytene Chromosomes in Two Species of Diptera (Trypetidae and Rhagionidae)

“…This regression frequently occurs asymmetrically ( « heterozygously ») (Fig. 3c, e, f), which is hardly evidence of genic heterozygosity but rather an indication of the cell-physiologically determined, asynchronous course of these events (PERONDINI et al 1969;AMABIS et al 1972). The polytene chromosomes in the Malpighian tubules have the same structure as.…”

The Salivary Gland Chromosomes ofTelmatoscopus Albipunctatus(Williston) (Diptera: Psychodidae)

“…The salivary gland chromosomes of T elmatoscopus albipunctatus were numbered from I to VI in the same order as Telmatoscopus sp. (AMABIS and SIMOES 1972) owing to the remarkable resemblances of two species which were immediatly observed. Afterwards a salivary chromosome map have been drawn (Figs.…”

“…(ROTHFELDS andFREEMAN 1966), in some species of Sciara (METZ 1935(METZ , 1937(METZ , 1938(METZ , 1947CARSON 1944;McCARTHY 1945;PAVAN and PERONDINI 1967;DESSEN 1969) andin Telmatoscopus sp. (AMABIS andSIMOES 1972).…”

“…More recently the salivary gland chromosomes of a species of the genus Telmatoscopus were analized (AMABIS and SIMOES 1972). Nevertheless these limited studies show that this group is very interesting to the cytogenetic analysis.…”

“…These were found in salivary gland chromosomes of Telmatoscopus sp. (AMABIS and SIMOES 1972) and of Telmatoscopus albipunctatus, which is the object of this study.…”