Guide riffle invertebrates Australian Wet Tropics streams
1709Guidetotheriffleinvertebrates
1709Guidetotheriffleinvertebrates
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16. Prosternum with large sclerite or sclerites .................................................................... Odontoceridae (16a,b)<br />
16a. Odontoceridae: prosternum 16b. Odontoceridae: head and thorax<br />
prosternal<br />
sclerite<br />
− Prosternum membranous ................................................................................................................................ 17<br />
17. Ventral surface of head capsule with genae widely separated at occipital margin (except Genus Con B) ........<br />
….. ................................................................................................................................ Conoesucidae (17a,b)<br />
17a. Conoesucidae: head, ventral view 17b. Conoesucidae: Genus Con B<br />
genae<br />
occipital<br />
margin<br />
Morphology very<br />
different from others in<br />
the family. Genae<br />
almost abutting at<br />
occipital margin. Case<br />
triangular, made from<br />
bands of thick secretion,<br />
flattened with dorsal<br />
hood.<br />
− Ventral surface of head capsule with genae close together and almost abutting at occipital margin ............. 18<br />
18. Strong beaded carina extending obliquely across pronotum, terminating in a pointed and dorso-ventrally<br />
flattened projection at each antero-lateral corner ......................................................... Antipodoeciidae (19a)<br />
− Carina (if present) not beaded, not terminating in pointed projections ........... Calocidae / Helicophidae(19b)<br />
Note: Currently, calocid and helicophid larvae cannot be separated.<br />
19a. Antipodoeciidae: head and thorax 19b. Calocidae/Helicophidae: head and<br />
thorax<br />
beaded carina<br />
carina not<br />
beaded<br />
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