File: <colyd1.ima.htm> [For educational purposes only] Terminology Glossary <Principal Natural
Enemy Groups > <Citations> |
Immature Stages
of Colydiidae
Detailed information on immature
stages of Colydiidae is being acquired.
However,Craighead (1920) noted that Bothrideres geminatus
Say is a predator of mature larvae or pupae of several Cerambycidae, and in
one case several larvae were found within a pupa of Chrysobothris sp.
In the latter development was presumably internal (Craighead
1920). Hopkins (cited by Clausen,
1940) recorded B. contractus as an external
parasitoid of Cerambycidae larvae. Bothrideres cactophagi Sc. is parasitic on prepupae
of the large cactus weevil, Cactophagus
validus. Deretaphrus
oregonensis Horn was found
in pupal cells of Asemum atrum Esch. in pine, the host
larvae being full grown before death (Craighead 1920). The mature larva of this parasitoid is
very much modified because of its host relationships (see Clausen, 1940 for
diagram). The body is fleshy,
fusiform and wide in the mid-abdominal area.
It has a thin integument that is glabrous. Mandibles are triangular and forked at the apex, and the
ventral mouth parts are fleshy and weak.
The legs are short, weak and widely separated. Spiracles occur on the 2nd thoracic and
1st 8 abdominal segments. The dorsum
of the 9th segment has a pair of chitinous recurved hooks (Clausen 1940/62).
Dastarcus helophoroides Fairm. is an external parasitoid of the
mature larvae of Xylocopa appendiculata Smith in China
(Piel 1938). The 1st instar larva is
elongated, indistinctly segmented and without spines or setae and has minute
rudimentary legs. Development is
completed in ca. 4 days. These larvae
were found on hosts that had been killed by mites and were already undergoing
decomposition, so that is was uncertain whether they were parasitic or
scavengers. Clausen (1940) believed
that the form of the larva would indicate that they were parasitic. Please CLICK on picture to view details: References: Please refer to <biology.ref.htm>, [Additional references may
be found at: MELVYL Library ] |