The Cambridge natural history, Vol. 05 (of 10)Sedgwick, Adam
Science
The Cambridge natural history, Vol. 05 (of 10)
Sedgwick, Adam
Animals
VARIOUS FORMS OF A COMMUNITY.—The soldiers and workers are not the only
anomalous forms found in Termitid communities; indeed on examining a large
nest a variety of forms may be found that is almost bewildering. Tables
have been drawn up by Grassi and others showing that as many as fifteen
kinds may be found, and most of them may under certain circumstances
coexist. Such tables do not represent the results of actual examination in
any one case, and they by no means adequately represent the number that,
according to the most recent observations of Grassi, may be present; but we
give one taken {373}from Grassi, as it conveys some idea of the numerous
forms that exist in certain communities. In this table the arrangement,
according to A, B, C, D, E, represents successive stages of the
development:—
_Forms of Termes lucifugus_. (After Grassi.) _Zool. Anz._ xii. 1889, p.
360.
A 1. Young, undifferentiated larvae.
|
+----------------------+--------------------------+
| | |
B 2. Larvae that will 3. Larvae that will 4. Reserves for royal
not mature the sexual mature the sexual specimens:(only present
organs. organs. when 14, 15, and 11 are
| | wanting, or when 14 and
| | 15 are present in
| | insufficient numbers).
| |
+-----+-----+ +------------+-------------=
| | | | |
C 5. Larvae 6. Larvae 9. Nymphs of 10. Nymphs 11. Reserves for
of soldiers. of workers. the first of the royal pairs (only
| | form. second present when 14,
| | | form. 15, and 4 are
| | | | wanting, or when
| | | | the two latter
D 7. Soldiers. 8. Workers. +----+-----+ | are present in
| | | insufficient
12. Winged 13. Reserve | numbers).
Insects royal pairs? |
| |
E 14. True royal 15. Substitution
couple. royal pairs.
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