File: <oruss1.ima.htm> [For educational purposes only] Terminology Glossary <Principal Natural
Enemy Groups > <Citations> |
Immature Stages
of Orussidae
Detailed information on immature stages of Orussidae is being
acquired. However, Clausen (1940)
noted that the mature larva of Oryssus
occidentalis Cress. (Fig. 7)
(Rohwer & Cushman 1917; H. L. Parker 1934) bears a considerable
resemblance to a chalcidoid larva of the same instar. It is subcylindrical, with 13 body
segments, the legs indicated by sclerotized disks, and each segment bears a
transverse row of 4-5 short, stout spines at each side of the dorsal median
line. There are 10 pairs of
spiracles, located on the last 2 thoracic and the 1st 8 abdominal
segments. Those of the metathorax,
which Parker does not diagram, are rudimentary and nonfunctional. The head is small , with tubercle-like
antennae, and the mandibles are narrow and tridentate. The pupa of the female bears the ovipositor over the dorsum, and
it extends forward slightly beyond the head.
The 2nd to 8th abdominal tergites bear transverse rows of spines at the
sides. Please CLICK on picture to view
details: References: Please refer to <biology.ref.htm>,
[Additional
references may be found at: MELVYL Library ] |