Hydropsyche flintorum Oláh & Johanson, 2008

Oláh, J. & Johanson, K. A., 2008, Generic review of Hydropsychinae, with description of Schmidopsyche, new genus, 3 new genus clusters, 8 new species groups, 4 new species clades, 12 new species clusters and 62 new species from the Oriental and Afrotropical regions (Trichoptera: Hydropsychidae), Zootaxa 1802, pp. 1-248 : 86-87

Hydropsyche flintorum Oláh & Johanson , new species

Fig. 127–131

This is one of two Hydropsyche sensu strictus species recorded from New Guinea. It resembles the New Guinean species H. moselyi Kimmins in the H. hamifera species group. Hydropsyche flintorum is easily distinguished from H. moselyi in the presence of a stronger quadrangular apical lobe on segment IX; a larger apicodorsal setose lobe on segment X that is not shifted immediately to the intersegmental corner under the median keel; a pair of sclerotized endothecal lobes being aviform in ventral view; a broad, elongate phallotremal sclerite; a large and un-cleft spine on the anterior dorsolateral membranous endothecal process; and a posterior dorsolateral membranous endothecal process with serrate dorsum that is fully packed with small spicules. This last character is the most striking one in recognizing this species.

Male. Body stramineous. Wings ochraceous with light pubescence. Forewing membrane ochraceous with pale spots. Maxillary palp formula I-(III,IV)-II-V, segment V as long as segments I–IV together. Dorsum of head yellow, with 9 pale yellow warts. Posterior wart largest, mesolateral wart large, anterolateral wart dividing into 2 small warts, anterolateral or interantennal warts large. Swollen setal wart present on proepisternum. Protibia with tarsal claw asymmetrical, laterally flanked by setal bundle. Spur formula 244. Protibia with posteroapical spur smaller than anteroapical spur.

Wings. Venation typical for the genus. Forewing crossveins m-cu and cu distant from each other. Sc and R, and Cu2 and A separate before costa. Hind wing Sc and R meeting before costa about at crossvein r. Stem of M and Cu1 close. Median cell closed. Fork 1 present. Forewing length 9.0 mm, hind wing length 7.0 mm.

Male genitalia. Abdominal segment IX fused annularly, short. Median keel narrow, slightly narrowing apically ( Fig. 128); dorsal and lateral surfaces granulose; keel representing entire dorsum of segment IX shifted posterad; anterior margins arciform, ending in short ventrum and slightly longer dorsum ( Fig. 127). Each antecosta well developed, unusually broad, present along margin, narrowing dorsad, with weak external groove of antecostal suture. Apical lobe on posterolateral margins long, quadrangular, shifted dorsad, directed posterad ( Fig. 127). Each posterior spine row intermittent, present on median keel slopes, single spine at segment X, numerous spines on long apical lobes, spines absent from lower portion above apical lobes. Depression between segments IX and X deep, stepwise, delineated by distal end of median keel and horizontal dorsum of segment X. Body of segment X elongate, bellied in lateral view ( Fig. 127); rounded quadrangular in dorsal view ( Fig. 128). Lateral setose areas (preanal appendages) located centrally, each with basal part forming compact, pale patch and distal, scattered setae. Apicoventral setose lobes modified into pair of long, slender processes with apical setae; ventrad curving almost right-angled ( Fig. 127); curving mesad in dorsal view ( Fig. 128). Dorsal interlobular gap two-partite ( Fig. 128); wide, distal part almost circularly surrounded by slender apicoventral setose lobes; narrow, shallow basis partly filled with membrane. Apicodorsal setose lobes forming pair of mesal setose processes, vertically regular, well separated from intersegmental corner; smooth cavity on basal half of segment X weakly developed; longitudinal suture encircling preanal appendages, difficult to discern. Coxopodites slightly exceeding apex of segment X ( Fig. 127); proximal two-thirds very slender, dilating significantly from two-thirds its length; gently curving mesad in ventral view ( Fig. 129). Harpagones basally broad, distal two-thirds sigmoid, filiform. Phallic apparatus simply bent, broadening along ventrad curving basis ( Fig. 130); horizontal part of phallotheca with nearly straight dorsum. Endophallus forming narrow tube constricted near gonopore, anteriorly reaching to ventral bend of phallic apparatus. Basis of phallotremal tongue broadening upwardly in lateral view ( Fig. 130); distal elongation twice the width of apical lobes of bilobed phallotheca (sclerotized endothecal lobe); trifid apex of phallothecal apex with aviform apex in ventral view ( Fig. 131). Pair of anterior dorsolateral membranous lobes of endotheca with long apical spine. Pair of dorsal or posterior dorsolateral membranous lobes of endotheca shorter; dorsum serrated by short spicules.

Holotype male: PAPUA NEW GUINEA: Morobe Province, Wau, Wau Ecol Inst 1200 m, secondary montane forest, 25–31.vii.1983 [S.E. & P.M. Miller] - ( NMNH, alcohol).

Paratypes. PAPUA NEW GUINEA: same data as holotype, except 1–10.viii.1983 - 1 male, 5 females ( NMNH, alcohol). Distribution. Papua New Guinea. Etymology. This species is named after Oliver S. Flint, Jr. for contributing to this work with material and motivation .