Glabridorsum japonicum, Watanabe, 2020

Watanabe, Kyohei, 2020, Expression of green fluorescent protein defines a specific population of lamina II excitatory interneurons in the GRP :: eGFP mouse, Bulletin of the Kanagawa Prefectural Museum (Natural Science) 49, pp. 29-66 : 43-44

Key to Japanese species of the genus Gambrus (female only)

1. Hind leg entirely black. Metasomal tergites entirely black except for a large median white spot of T VII. ............................................ Ga. wadai ( Uchida, 1936)

-. Hind leg and metasomal tergites with a conspicuous red to reddish brown area ( Fig. 7A)..................................................................................2

2. Hind tarsus black with conspicuous white bands ( Fig. 7A). Hind coxa black ( Fig. 7A). ............................................ Ga. homonae Sonan, 1930

-. Hind tarsus without conspicuous white bands, at most tinged with reddish brown. Hind coxa red...........................................................................................3

3. Metathorax and propodeum black. Hind leg reddish brown except for anterior part of tibia, femur and each tarsal segment blackish brown to black. ....................................... Ga. ruficoxatus ( Sonan, 1930)

-.“Metathorax”red (= propodeum red?). Hind leg black, with femur towards the base and coxa red.

.............................................. Ga. variator (Walker, 1874) (not seen by the author)

Genus Glabridorsum Townes, 1970 Glabridorsum Townes, 1970: 174 . Type species: G a m b r u s s t o k e s i i C a m e r o n, 1 9 1 2. O r i g i n a l designation.

Two species, Gl. acroclitae Kusigemati, 1982 and Gl. simile Kusigemati, 1982 , have been recorded from Japan. In this study, I herein describe a new species, Gl. japonicum sp. nov., from Honshu, Japan.