Phylocentropus ngoclinh, Arefina-Armitage & Armitage, 2011

Arefina-Armitage, I. T. & Armitage, B. J., 2011, Three new species of Phylocentropus Banks (Trichoptera: Dipseudopsidae) from Vietnam, Insecta Mundi 2011 (193), pp. 1-6 : 1-6

Phylocentropus ngoclinh sp. n.

(Figures 5-9)

Diagnosis. Phylocentropus ngoclinh is similar to Ph. orientalis in the shape of segment Xand the preanal appendage in lateral view. It differs by the shape of the segment Xin dorsal view; by the inferior appendage subquadrate in lateral view; and, by the shape of the phallic apparatus.

Adult. Length of male forewing 6.9-7.0 mm. General color yellowish-brown, wings pale. Forewings with venation complete; hind wings with forks I, II, III, and V.

Male genitalia. Sternite IX 2.5 times as long as wide; in lateral view, anterior portion with acuminate apex, posterior margin rounded. Segment X long, trapezoidal in lateral view, bifurcate in dorsal view. Preanalappendage large, elongate, broad basally, graduallytapering apically, withrounded apex in lateral view. Intermediateappendage absent. Inferior appendage subquadrate in lateral view, distal margin with shallow rounded concavity; posterodorsal portion of inferior appendageproducing lobe, resembling bird head in ventral view. Phallic apparatus long and slender; endotheca short, with apex rounded in lateral view, acuminate in dorsal view.

Female and immature stages. Unknown.

Holotype male. Vietnam, Quang Nam Province, Ngoc Linh , 950 m, 15 o 10’N, 108 o 5’E, Malaise trap, 16 April 1999, K. Long, C. Johnson . Paratype: 1 male, same data as holotype, 11-18 March 1999.

Figures 1-4. Phylocentropus tohoku sp. n., male genitalia. 1) Lateral view. 2) Dorsal view. 3) Ventral view. 4) Phallic apparatus, lateral view.

Distribution. Known only from the type locality in Quang Nam Province ( Vietnam).

Etymology. This species is named for the mountain, Ngoc Linh, referred to as the “the roof of Vietnam ”, wherein this species was collected.