Phyllhermannia namadjiensis, Colloff, 2011

Colloff, Matthew J., 2011, 2770, Zootaxa 2770, pp. 1-60 : 37-39

Phyllhermannia namadjiensis sp. nov.

( Figs. 22, 34n)

Dimensions. Holotype female length 595 µm breadth 313 µm; paratype female length 581 µm, breadth 323 µm. Ratio of length of prodorsum to total length: 0.34 (holotype).

Female. Prodorsum: rostrum acute, without inverted V-shaped ridge; rostral seta (ro) 18 µm, curved, setiform, smooth ( Fig. 22a). Lamellar seta (le) 38 µm, phylliform, curved, barbed, on well-developed conical tubercle on lateral margin of prodorsum. Transverse lamellar ridge absent. With lateral ridge between base of lamellar seta and acetabulum of leg I inflated laterally, then strongly waisted; prodorsum tuberculate laterally. Surface of prodorsum porose, smooth. Interlamellar setae (in) 40 µm, phylliform, curved, uniformly barbed, rounded apically, on broad, smooth, acutely pointed, inverted V-shaped interbothridial ridge. Bothridial seta (bs) elongate, 125 µm, evenly thick, apex tapering, sharply pointed and barbed apically. Exobothridial seta (ex) 11 µm long. Interbothridial region densely and strongly porose, divided medially by non-porose region bearing scattered tubercles. Median condyles present.

Notogaster: ratio of length to breadth 1.22. Dorsosejugal suture smooth. Notogaster with well-developed network of transverse and longitudinal lines of minute tubercles connecting bases of setae in median and lateral files, extending laterally to notogastral margin and posteriorly to setae of the p series ( Fig. 22a). Setae flat, broad (16–19 µm), phylliform, straight or slightly curved, uniformly barbed, rounded or truncated apically, not overlapping, subequal in length (33–50 µm). Setae of c series all directed posteriorly or posteriolaterally, 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 1.1 × that between d 1; distance between e 1 1.3 × that between f 1. Lyrifissurae im acute.

Coxisternum: Posteriolateral margins of rostrum and lateral margins of epimeres I smooth; posteriolateral margin of epimere I rounded ( Fig. 22b). Anterior sternal apodeme straight, broad, smooth. Apodeme III transverse, broader than others, with curved median ridge. Epimere III smooth. Posterior margin of epimere IV with line of well-developed tubercles, opposed by 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, 1c, 3b longer (15–25 µm); 4a 33 µm; setae 3c, 4d and 4e longer (53–78 µm), 4d slightly longer than others (85 µm). Setae on epimeral plates III and IV on medial part of plates.

Anogenital region: Posterior and lateral regions of genital plates surrounded by narrow zone of smooth cuticle, slightly heavily sclerotised than rest of ventral plate ( Fig. 22b). Each genital plate with pattern of striations, 98 µm long, 43 µm broad with six short (10–13 µm), thin spiniform setae in median file; g 1 not displaced laterally. With three setae in lateral file, anteriolateral seta (g 4) longest (31 µm); others same length as median setae. Aggenital setae sub-equal in length to genital setae in median file. Pre-anal organ pointed. Each anal plate 138 µm long, 43 µm broad, with two short (15 µm) setae on anterior and central part of plate. Adanal setae ad 1 longer (20 µm) and thicker than others (15 µm).

Legs: Femur I 126 µm long, with lateral and medial processes absent from proximal end ( Fig. 34n). Cuticle with sparse, lightly alveolate pattern. Setae d and l ” squat, broad, phylliform, barbed and rounded apically, d slightly longer (23 µm) than l ” (15 µm); seta l ' on prominent tubercle, thick, curved, barbed and rounded apically, much longer (73 µm) and thinner than others. Seta v ' 22 µm long.

Material examined. Holotype female, paratype female, Eucalyptus forest, 2 km from Corin Dam, Namadji National Park , Australian Capital Territory, 35°32'6.54"S 148°49'58.31"E, coll. J. Bloszyk and S. Konwerski, July, 2007 . Holotype and paratype deposited in the Australian National Insect Collection, CSIRO Ecosystem Sciences, Canberra .

Etymology. Phyllhermannia namadjiensis is named for its type locality, Namadji National Park.

Remarks. Phyllhermannia namadjiensis can be differentiated from other member of the genus based on the following combination of characters: 1) the tuberculate lateral prodorsum; 2) the pointed rostrum and interbothridial ridge; 3) the broad, phylliform lamellar setae; 4) the lateral ridge between the base of the lamellar seta and the acetabulum of leg I is inflated laterally then waisted; 5) the tuberculate lateral margins of the prodorsum; 6) the acute apex to the interbothridial ridge; 7) the broad, phylliform, barbed, rounded or truncated notogastral setae; 8) the dense network of notogastral tubercles; 9) the striate genital plates; 10) with setae d and l ” of femur I squat, broad, phylliform, barbed and rounded apically.

Phyllhermannia namadjiensis is morphologically most similar to P. sauli sp. nov. (cf. below). They share the striate genital plates, the morphology of the bothridial, notogastral and genital setae, lateral prodorsal ridge and both are sparingly tuberculate between the median prodorsal condyles. They differ in the morphology of the setae of femur I, the lamellar setae and interbothridial ridge. Also, the posterior margins of epimeral plates III of P. namadjiensis are smooth, whereas those of P. sauli are tuberculate.