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Zoology Publications from Victoria University of Wellington—Nos. 66 and 67

Hypogastrura (Cyclograna) boletivora (Packard, 1873) — Achorutes boletivorus Packard, 1873 — Achorutes marmoratus Packard, 1873 — Achorutes pratorum Packard, 1873 — Achorutes armatus (Nicolet) Folsom, 1916 — Hypogastrura (Cyclograna) vulgaris Yosii, 1960 — Cyclograna vulgaris Yosii, 1960 — Hypogastrura vulgaris Salmon, 1964 — Figs. 164-171

Hypogastrura (Cyclograna) boletivora (Packard, 1873)
Achorutes boletivorus Packard, 1873
Achorutes marmoratus Packard, 1873
Achorutes pratorum Packard, 1873
Achorutes armatus (Nicolet) Folsom, 1916
Hypogastrura (Cyclograna) vulgaris Yosii, 1960
Cyclograna vulgaris Yosii, 1960
Hypogastrura vulgaris Salmon, 1964
Figs. 164-171

Dr K. A. Christiansen has in his collection at Grinell, Iowa, a paratype of Cyclograna vulgaris sent him by Dr Yosii. I have studied this specimen and also Folsom's specimens labelled cotypes at USNM and the material left by Packard and preserved in MCZ.

Folsom (1916) who studied Packard's material considered that the three species described by Packard (1873) were all identical with A. armatus of Folsom. After studying all this material I agree with the suggestions made by Yosii in 1960, p.264, that Folsom's A. armatus and Yosii's C. vulgaris are the same species. This means that the correct name for this assemblage will be H. (Cyclograna) boletivorus (Packard), being the first species described by Packard (page priority) in his 1873 paper. However, the peculiar spines of the dens, the lamellae of the mucro and the odd PAO seem to call for the retention of Yosii's subgenus Cyclograna for this and the several related species described by Yosii. The occurrence of the eversible sac between Ants III and IV, the general body form and chaetotaxy all indicate that this species is a Hypogastruran form of Collembola. This view is further strengthened by the mouth parts; the mandible is present with a distinct molar area and the maxilla head has six apical teeth.

Figs. 164-171 are from the paratype of Cyclograna vulgaris Yosii and supplement those already given by Folsom (1916) and Yosii (1960).

Notes: Dens and mucro (Figs. 169-170) with their peculiar spines and page 33lamellate mucro rather similar to the condition found in the genus Clavontella; furcula is reduced and very small, the dens and mucro being sub-equal in length to the hind claw; PAO is rather Folsomia-like on the surface but divides into three lobes as the microscope is focussed deeper into the cuticular groove in which the PAO lies.