ICHNEUMONIDAE: : Diaparsis Förster 1869

Diagnosis:

Characteristics of Diaparsis include: 1. Body size <10mm; 2. Position of spiracle on T1 clearly behind the centre; 3. Shape of aerolet in forewing small, open; 4. Colour of face black; 5. Metasoma compressed laterally; 6. Size of ocelli small; 7. Length of antennae shorter than body; 8. Length of ovipositor very thin and as long, or longer than body; 9. Wings present; 10. Colour of wings hyaline (clear); 11. Sternaulus absent; 12. Shape of face in lateral view flat or only weakly bulging; 13. Sternite on T1 (viewed laterally) extending past spiracle sometimes forming a long cylinder with tergite; 14. Shape of T1 (viewed laterally) evenly curved; 15. Number of teeth in mandibles 2; 16. Metasoma same colour throughout; 17. Length of T1 longer than T2; 18. Sculpture on mesoscutum finely pitted, many hairs; 19. Width of T1 (viewed dorsally) anterior part slender often parallel, strongly widening behind spiracle; 20. Glymma on T1 absent; 21. Sculpture on metasoma smooth with a glossy appearance (highly polished, no punctures); 22. Propodeum reaching past coxal insertion, but not reaching halfway along metacoxae.

Distribution in NZ

North Island: CL, HB. South Island: BR, MK.

Species in NZ

One undescribed endemic species.

Biology & hosts

This subfamily is very poorly known in New Zealand, it was not included in the 1991 Catalogue of New Zealand Hymenoptera (Valentine & Walker 1991). This species is endemic to New Zealand, but appears to be very uncommon. There are no host records.

Sources of information

Khalaim AI. 2004. New tersilochines from Australia and New Zealand (Hymenoptera: Ichneumonidae, Tersilochinae). Zoosystematica Rossica 13: 43-45.
Khalaim AI. 2006. New tersilochines from the collection of Natural History Museum, London (Hymenoptera: Ichneumonidae, Tersilochinae). Zoosystematica Rossica 14: 269-273.
Valentine EW & Walker AK. 1991. Annotated Catalogue of New Zealand Hymenoptera. DSIR Plant Protection Report 4. General Printing Services, 84 pp.

Citation

Ward DF & Schnitzler FR. 2013. Ichneumonidae of New Zealand. Genus Diaparsis http://ichneumonidae.landcareresearch.co.nz
Accessed: 2 May 2024

Revised

v1.0. Ward DF & Schnitzler FR. 2013