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Volume 76, 1946-47
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Historical.

1901. On pp. 245–250, under the name Glycyphagus spinipes Koch. Michael described a species similar to the one concerned except for the presence of a setose scale on the genual of the third leg of the female.

1904a. Oudemans, on p. 102, referred to the species Glycyphagus cadaverum (Schrank) as being the one commonly known as G. spinipes. He stated that this lacked the scale on genual 3 of Michael's spinipes. Oudemans suggested Glycyphagus

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Fig. 2.—Factory euring room. Ends of successive tiers of cheese shelves.
Fig. 3.—Medium cheeses crated ready for dispatch from the factory.

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Fig. 4.—Cheeses from slow vats, heavily mite infested after having been held in the curing room for 1 year 9 months.
Fig. 5.—Upper surface of one of the cheeses in Fig. 4, showing mite injury.

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Fig. 6.—Subdivisions of the body in the Acarina (after Vitzthum). A, gnathosoma; B, propodosoma; C, metapodosoma; D, opisthosoma; A + B, proterosoma; C + D, hysterosoma; B + C, podosoma; A + B + C, prosoma; B + C + D, idiosoma.
Fig. 7.—Segments of the leg in the Acarina.
Fig. 8.—Arrangement of dorsal body hairs in the Tyroglyphidae (after Zakhvatkin). an, anal hairs; d1, d2, d3, d4, first, second, third, fourth pairs of dorsal hairs; h e, h i, exterior and interior humeral hairs; l a, l p, anterior and posterion lateral hairs; pa, postanal hairs; sa e, sa i exterior and interior posterior hairs; se e, sc i, exterior and interior scapular hairs; v e, v i, exterior and interior vertical hairs.
Fig. 9.—Arrangement of dorsal body hairs in the Glycyphagidae (after Zakhvatkin). h, humeral hairs; l1, l2, l3, first, second, third pairs of lateral hairs; v a, v p, anterior and posterior vertical hairs.

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Fig. 10.—Tyroglyphus farinae, female dorsal. Fig. 11.—Tyroglyphus farinae, male ventral.

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Fig. 12.—Tyrolichus casei, female dorsal. Fig. 13.—Tyrolichus casei, male ventral.

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Fig. 14.—Tyrolichus sp. ? lini, female dorsal.
Fig. 15.—Tyrolichus sp. ? lini, male ventral.

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Fig. 16.—Tyrophagus longior, female dorsal. Fig. 17.—Tyrophagus longior, male ventral.

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Fig. 18.—Rhizoglyphus echinopus, female dorsal.
Fig. 19.—Rhizoglyphus echinopus, male ventral.

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Fig. 20.—Thyreophagus entomophagus, female dorsal.
Fig. 21.—Thyreophagus entomophagus, male ventral.
Fig. 22.—Chortoglyphus arcuatus, female dorsal.
Fig. 23.—Chortoglyphus arcuatus, male ventral.

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Fig. 24.—Glycyphagus (s. str.) domesticus, female dorsal. Fig. 25.—Glycyphagus domesticus, male ventral.

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Fig. 26.—Glycyphagus (Lepidoglyphus) destructor, female dorsal.
Fig. 27.—Glycyphagus (Lepidoglyphus) destructor, male ventral.

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Fig. 28.—Gohieria fusca, female dorsal.
Fig. 29.—Gohieria fusca, male ventral.

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michaeli nov. nom. for the G. spinipes of Michael, which he considered an entirely different form from the continental one.

1913. Oudemans corrected his earlier use of the name Glycyphagus cadaverum (Schrank). He stated that he had wrongly identified G. cadaverum as being the same as G. destructor (Schrank), whereas cadaverum (Schrank) was identical with privatus, a species recorded by Oudemans in 1904. This correction, which has been generally ignored by British acarologists, entailed the substitution of the specific name destructor (Schrank)—not cadaverum—for spinipes Koch.

In this paper Oudemans divided the genus Glycyphagus into a number of groups, of which the most important were:

(1)

The Domesticus-group, containing G. domesticus, ornatus and cadaverum Schrank (= privatus Oudm.).
(2)

The Destructor-group, containing G. destructor, pilosus Oudm. (= setosus Oudm., non Koch), michaeli, fustifer and burchanensis.

1918. Newstead and Duvall referred to the species as Glycyphagus cadaverum Schrank, this identification being based on Oudemans' findings of 1904.

1920. Newstead and Morris illustrated the species which they called G. cadaverum. Its morphological characters agree with the present New Zealand species.

1929. Vitzthum, on p. 77, described the species under the name Glycyphagus cadaverum Schrank, recording spinipes Koch as a synonym.

1936b. Zakhvatkin erected the new genus Lepidoglyphus for the species G. destructor Schr., which he stated = spinipes Koch, thus recognising Oudemans' correction of the species from cadaverum to destructor.

1940. Zakhvatkin reduced Lepidoglyphus to the status of a subgenus of Glycyphagus.

1941. In his revision, on pp. 451–452 of the key, Zakhvatkin divided the genus Glycyphagus into two subgenera, Lepidoglyphus and Glycyphagus s.str. The subgenus Lepidoglyphus included those species comprising the Destructor-group of Oudemans, while the subgenus Glycyphagus s.str. corresponded to the Domesticus-group. Zakhvatkin redescribed and figured Glycyphagus (Lepidoglyphus) destructor (Schr.) Ouds. on p. 296. Diagnostic characters for the species were included on p. 452 of the key in French.

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