Genus Entomobrya Rondani.
Entomobrya totapunctata Salmon, 1941.
Now reported from Titahi Bay, beaten from tauhinu scrub on the coast. (Coll. by R. Forster.). Karori, under bark of fuchsia trees. Dean's Bush, Christchurch, under bark of Kahikatea trees. (Author's Coll.).
Entomobrya lamingtonensis Schott, 1917.
A further locality, Karori, under the bark of fuchsia trees. (Author's Coll.)
Entomobrya egmontia Salmon, 1941.
An extraordinary locality for this species was amongst coal in a coal box of a Wellington residence. (Coll. D. K. Ross.)
Entomobrya multifasciata Tullberg, 1871.
Entomobrya nivalis Linne, 1758. Sensu stricto, and sub-spec. immaculata Schaeffer 1896.
These species can now be recorded as common and generally distributed throughout the country. Usually found in leaf mould, but also occurring under the bark of trees.
Entomobrya exfoliata sp. nov. Plate 42, figs. 52–55.
Colour: In life black with white bands on the legs and sometimes with irregular spots on the body. Mounted: variable, with ground colour of yellowish ochreous overlaid by intense deep violet-black pigment. Typically the whole trunk is deep violet-black, with depigmented spots and streaks of ochreous showing through irregularly, but always with three or four diagonally sloping streaks on the sides of Th. I and Th. II and four or five similar streaks on the sides of Th. III. Depigmented patches occur around the anterior margin of Abd. IV; otherwise the whole of the trunk may be dark pigmented or the pigment may be broken up by small depigmented spots and streaks. The head laterally with deep violet pigment, dorsally ochreous, but between the ocellar fields a large hexagonal area of brownish violet pigment pointed anteriorly and posteriorly. Ant. I deep violet-black; II, III and IV dark ochreous with generally deep violet bands at the joints. Legs ochreous yellow with deep violet bands around all segments. Furcula with the manubrium and base of dens deep violet-black, or ochreous with deep violet pigment along
the dorsal and ventral surfaces. Remainder of mucrodens yellow. Ocellar fields black. The limit of the reduction of the dark pigment on the trunk is reached when it is reduced to a few scattered spots and a narrow but very definite mid-dorsal line along the thorax and first three abdominal segments. This form, however, is very rare.
Clothing: Head., thorax and Abds. I-III dorsally, and Th. I and II laterally, with many long, flexed setae. The body heavily clothed with short, ciliated setae and posteriorly numerous long, ciliated setae. Antennae, legs and furcula heavily clothed with ciliated setae, some of which are very long.
Body: Length up to 2.4 mm. Antennae two and a-half times as long as the head, the four segments related as 10:21:15:19. Eight ocelli to each side, with the anterior pair very large, four medium and two very small. The posterior smaller ocellus almost touching the posterior larger ocellus. Abd. IV seven to eight times as long as Abd. III.
Legs: Claw with outer tooth about one-quarter down, a pair of outer lateral basal teeth reaching about one-third down outer edge, and five inner teeth. A large pair at just before centre, a long, closely-adpressed pair at three-quarters, and a smaller single tooth at seven-eighths. Empodial appendage lanceolate, and reaching to second pair of teeth. A single tenent hair, strongly clavate and as long as the claw, to each foot.
Furcula: Manubrium and mucrodens of equal length. Dens corrugated and annulated, the uncorrugated portion twice the length of the mucro. Mucro elongate, narrow, bidentate, with basal spine, the apical tooth slightly smaller than the pre-apical. Ciliated setae, when present, barely over-reaching the mucro. A double membrane reaches from the apex of the dens to the base of the basal spine on the mucro.
Locality: Titahi Bay, beaten from tauhinu scrub (Coll. R. Forster and Author). Red Rocks, Cook Strait, beaten from coastal scrub (Coll. R. Forster). Karori Hills, beaten from tauhinu scrub (Author's Coll.).
Type: Slide 3/1095 and Figured Paratype Slide 3/1094, Dominion Museum Collection.
Remarks: This species is readily recognised by its jet-black colouring. It is the only black New Zealand Entomobryid. The key given on P. 350 of my paper on the Collembolan Fauna of New Zealand should be amended under 2 by the insertion of the words given below in black print, the remainder of the key remaining exactly as it is at present:—
|2. Colour entirely blue, violet or black.||3|
|3. Jet-black with 3–4 diagonally-sloping streaks of yellow on the sides of each of the thoracic segments.||E. exfoliata sp. nov.|