![Thumbnail: [Volume 76, 1946-47 page 411]](/journals/rsnz/images/rsnz_76/thumbnails/rsnz_76_03_0523_0411_ac_02.gif)
Family Trombiculidae Ewing 1944.
Genus Nothotrombicula n.gen.
Scutum with anterior median process, but without anterior median seta or para-median setae. Sensillary setae long, filamentous and simple; four other setae on scutum. Coxal setae 2,1,1, modified, short, stout, peg-like. Tarsal claws 3,3,3, claws equal. Genotype, N. deinacridae n.sp.
Nothotrombicula deinacridae n.sp. (Figs. 8–10.)
Larva: Palpi rounded laterally. Palpal hairs; 1st. slightly fringed apically, 2nd. and 3rd. simple. Palpal thumb small; palpal claw short, stout, trifid, prongs sub-equal. Cheliceral teeth not clearly discernible (ventral series?). Scutum transverse, Pw greater than Aw, with acute, triangular, median anterior process. Disc of scutum without sculpture but transversely striate between bases of sensillae and a concave posterior line which embraces the sensilla bases and forms the posterior margins of a raised area. Anterior lateral margins straight but diverging postero-laterally. Anterior and posterior angles rounded. Lateral margins slightly concave between Al and Pl setae. Posterior margin with a slight concavity mesad of each Pl angle, and a slight median convexity. Anterior median setae or para-median setae not present. Al and Pl setae fairly stout, widest at base and tapering to apex, only slightly plumose or fringed. Sensory setae long, simple, filamentous. Scutal measurements (in microns) :—
[The section below cannot be correctly rendered as it contains complex formatting. See the image of the page for a more accurate rendering.]
| Aw | Pw | Sb | Asb | Psb | A-P | Al | Pl | Sens | |
|---|---|---|---|---|---|---|---|---|---|
| Type | 105 | 155.1 | 42.9 | 49.5 | 42.9 | 59.4 | 75.9 | 82.5 | 138.6 |
| Paratype | 105 | 161.7 | 49.5 | 49.5 | 42.9 | 56.1 | 72.6 | 82.5 | 141.9 |
| Paratype | 105 | 165.0 | 49.5 | 49.5 | 42.9 | 59.4 | 82.5 | 82.5 | 155.1 |
Eyes 2,2, sub-equal, sub-circular, contiguous, distant 115 microns or five diameters from Pl setae with which anterior eye is in line. Dorsal abdominal setae fairly stout, not strongly plumose, widest at base, tapering to tip, arranged 6,6,6,6,2. Cuticular striations marked, whorled around bases of dorsal setae which lie in depressions. Legs: lengths (microns) I, 200; II, 185; III, 180. Coxal setae 2,1,1, modified, short, stout, peg-like, 20 microns long, 6.6 wide. Stigma between coxae I and II. No true spiracle between coxae I and head. Ventral setae: two on capitulum, two between coxae II and III; 10,6,2,2,2, pre-anal; two para-anal; four sur-anal. Anus with prominent lobes bearing two setae on each; anterior seta short, posterior twice as long. Body length (microns) 1,204, width 660.
![Thumbnail: [Volume 76, 1946-47 page 412]](/journals/rsnz/images/rsnz_76/thumbnails/rsnz_76_03_0524_0412_ac_02.gif)
Host: Giant weta (Deinacrida rugosa?). Coll. M. Laird.
Locality: Mt. Peel, Nelson, N.Z.
Location of Type: In Entomology Division Collection, Nelson, N.Z.
Described from three specimens on one slide mount. Only one —the type—with chelicerae whole. This species in existing generic keys would run to Hemitrombicula Ewing, but differs in having tarsal claws 3,3,3, and equal. In facies it is an Acomatacarus without the Am setae and with modified coxal setae.