Phyllhermannia tanjili, Colloff, 2011

Colloff, Matthew J., 2011, 2770, Zootaxa 2770, pp. 1-60 : 49-54

Phyllhermannia tanjili sp. nov.

( Figs. 32, 33, 34q)

Dimensions. Holotype female length 571 µm breadth 316 µm. Paratype males (n = 4) mean length 503 µm, (range 492–516) mean breadth 264 µm (range 248–283). Ratio of length of prodorsum to total length: 0.29 (holotype).

Female. Prodorsum: rostrum pointed, without inverted V-shaped ridge; rostral seta (ro) 11 µm, curved, setiform, smooth ( Fig. 32a). Lamellar seta (le) 23 µm, curved, phylliform, barbed, on squat tubercle on lateral margin of prodorsum. Transverse lamellar ridge incomplete. With lateral ridge between base of lamellar seta and acetabulum of leg I; prodorsum sparingly tuberculate posterior of le, otherwise porose, smooth. Interlamellar setae (in) 40 µm, phylliform, curved, uniformly barbed, rounded or truncated apically, on broad, smooth, acutely pointed, inverted V-shaped interbothridial ridge. Bothridial seta (bs) elongate, 113 µm, evenly thick, smooth, tapered to fine point. Exobothridial seta (ex) 10 µm long. Interbothridial region densely and strongly porose, divided medially by non-porose region bearing scattered tubercles. Median condyles present with sparse tubercles between them.

Notogaster: ratio of length to breadth 1.3. Dorsosejugal suture smooth. Notogaster with network of minute tubercles connecting bases of setae in median and lateral files, extending posteriorly to setae of the e series ( Fig. 32a). Setae flat, broad, phylliform with a basal stalk, straight or slightly curved, uniformly barbed, rounded or truncated apically, not overlapping, p series slightly shorter (19–24 µm) than others (29–38 µm). Setae of c series all directed posteriorly, c 2 closer to c 3 than to c 1. Distance between setae c 1 0.6 × that between d 1; distance between d 2 0.9 × that between d 1; distance between e 1 sub-equal to that between f 1. Lyrifissurae im obtuse.

Coxisternum: Posteriolateral margins of rostrum and epimeres strongly tuberculate; posteriolateral margins of epimere I pointed ( Fig. 32b). Anterior sternal apodeme smooth. Apodeme III transverse, not broader than others, with U-shaped median ridge. Posterior margin of epimeral plates III smooth; only anterior part of plates porose. Posterior margin of epimere IV with line of well-developed tubercles; with ridge of tubercles anterior of genital plate. Epimere IV without sclerotised projection laterally. Epimeral setal formula 3-1-3-5. Setae 1a, 2a, 3a and 4b very short, sub-equal (5–8 µm); 1b and 4a longer (11–14 µm); 1c 26 µm; setae 3b, 3c, 3d and 4c longer still (53–62 µm); 4e longer (103 µm) than 4d (79 µm). Setae on epimeral plates III on anterior part; those on plates IV on medial part.

Anogenital region: Genital plates surrounded by zone of smooth cuticle, slightly heavily sclerotised than rest of ventral plate ( Fig. 32b). Each genital plate 91 µm long, 48 µm broad with six short (5–8 µm), thin setiform setae in median file. With three setae in lateral file, not longer than median setae. Aggenital setae sub-equal in length to genital setae in median file. Pre-anal organ rounded. Each anal plate 139 µm long, 31 µm broad, with two short (9 µm) setae on anterior and central part. Adanal setae sub-equal in length (14–17 µm). Caudal region of ventral plate bluntly pointed.

Lateral view: Anterior prodorsal margin curved vertically and slightly posteriorly; prodorsum with ridge anterior of base of lamellar seta ( Fig. 32c). Lamellar seta not projecting as far as base of rostral seta. Acetabulum I and II each with a dorsal tectum, surrounded by tubercles. Exobothridial seta emerging from base of bothridium. With alvelolus-like structure posterior of exobothridial seta. Interbothridial region convex; posterior prodorsum forming narrow channel with prodorsal condyle medially and enantiophysis laterally. Notogastral shield convex: ratio of height to length 0.4. Anterior margin of notogastral shield overhanging prodorsum; notogastral setae slightly curved. Region between genital plate and epimere IV slightly concave.

Legs: Cuticle of femora, genua and tibiae alveolate; with oval porose areas on paraxial surfaces. Femora I and II laterally flattened, with ventral keel ( Fig. 33). Femur I 124 µm long, with short posteriolateral projection proximally; medial projection absent ( Fig. 34q); setae d and l ” squat, phylliform, sparingly barbed, blunt, sub-equal in length (16 µm) seta l ' straight, barbed apically, longer (39 µm), thinner. Seta v ' 19 µm long. Seta v ” on femur I stout, barbed apically, blunt; bv ” smooth, spiniform, pointed ( Fig. 33a). Lateral seta on tibia I and II and genu II short, barbed, blunt ( Fig. 33b), lateral seta on genu I spiniform, smooth. Solenidion φ 1 on tibia I 32 µm long; φ 2 26 µm long. Dorsal surface of tarsus I with slight protuberance bearing solenidion ω (64 µm long), eupathidium Ɛ (16 µm long); and setae ft ' and ft ” (32 and 28 µm long). Formula: Leg I 1-6-4(1)-4(2)-21(1); Leg II 1-5-4(1)-4(1)-16(1).

Material examined. Holotype female and four paratype males, MJC 10-001. Moss on rocks, riparian rainforest gully, entrance to Coachwood Glen Nature Trail , Megalong Road , 3 km SSW of junction with Great Western Highway , Blue Mountains, nr. Blackheath, NSW, 33°39'38"S 150°16'20"E, 820 m, coll. T. B. Everett and M.J. Colloff, 16.i.2010 . Holotype and paratypes deposited in the Australian National Insect Collection, CSIRO Ecosystem Sciences, Canberra .

Etymology. Phyllhermannia tanjili is named in honour of its co-collector, Tanjil B. Everett of Coffs Harbour, New South Wales.

Remarks. Phyllhermannia tanjili sp. nov. can be differentiated from other member of the genus based on the following combination of characters: 1) the curved, barbed, phylliform lamellar setae and partial trans-lamellar ridge; 2) the sparsely-distributed tubercles on the anterior prodorsum; 3) the bothridial setae are smooth, long, tapering and sharp; 4) the acute median apex of the interbothridial ridge; 5) the presence of tubercules between the median prodorsal condyles; 6) the broad, phylliform, barbed, truncated notogastral setae; 7) the sparse network of minute notogastral tubercles; 8) the genital setae in the lateral file are very short, sub-equal in length to those in the median file; 9) the pre-anal organ is rounded apically; 10) the caudal region of the ventral plate is bluntly pointed; 11) with setae d and l ” on femur I squat, broad, barbed and blunted and seta l ' long, thin, straight, barbed and pointed.

Phyllhermannia tanjili is morphologically most similar to P. namadjiensis in the shape of the lamellar and notogastral setae, the acute interbothridial ridge and the tubercules between the median prodorsal condyles. It differs in the acute, tapering bothridial seta, the very short lateral genital setae and the smooth genital plates.