Cheumatopsyche ampanga 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 : 199

Cheumatopsyche ampanga Oláh & Johanson

Fig. 333–334

Cheumatopsyche ampanga Oláh & Johanson in Oláh, Johanson & Barnard 2008: 69 .

Type locality. Madagascar .

New records: MADAGASCAR: Fianarantsoa Province, 7 km W Ranomafana , 900 m, black light in mountain rainforest near rivers and streams, 20–31.i.1988 [W.E. Steiner] - 1 male, 6 females ( NMNH), 1 male ( OPC) ; ditto, except, 1100 m, 22–31.i.1988 [W.E. Steiner] - 2 males, 1 female ( NMNH) ; ditto, except 14.ix.1988 [C. Kremen] - 1 male ( NMNH) ; Fianarantsoa Province, Ranomafana , 600 m, 21.x.1988 [W.E. Steiner & R. van Epps] - 3 males ( NMNH), 1 female ( OPC) .

Remarks. The female was associated with male based upon similar forewing pattern. Spot-reticulated, circular plaque otherwise characteristic in the females of the similar Malagasian species C. ranomafana and C. tiokalamkita is absent on the membranous pleura of segment IV.

Female. Body and wings brown with dark brown pubescence, legs and antennae paler. Maxillary palp formula I-(III, IV)-II-V, segment V as long as sum of segments I–IV. Head dorsum dark chestnut brown, densely covered with setae, with 7 dark chestnut brown setal warts. Swollen setal wart absent on each proepisternum. Setal wart present on each precoxale. Pretarsal claws symmetrical, not laterally flanked by setal bundle; claws on mid- and hind-legs symmetrical. Spur fomula 244. Protibiae with posteroapical spur slightly smaller than anteroapical spur.

Wings. Forewing membrane brown, scattered with light spots and 3 large patches in costa area ( Fig. 333). Forewing crossveins m-cu and cu close, distance about two-thirds the crossvein length. Sc and R running separately towards costa. Cu2 and A1 separate at posterior wing margin. Hind wing Sc and R meeting before crossvein r at distance equal to half crossvein length. Crossvein r located basally of crossvein s at a distance equal to crossvein r lenght. Fork 1 absent. Forewing length 6.0 mm.

Female genitalia ( Fig. 334). Segments IX and X slightly extruded from partial coverage of segment VIII using pincers for proper illustration. Anteroventral corner partly covered by sternum VIII. Abdomen tapering slightly more in lateral view than in dorsal and ventral views; sagittally narrowing posteriorly. Tergum VIII quadrangular, with slightly produced ventrocaudal lobes. Ventrocaudal lobes covered by stiff setae working in tri-folding mechanism of segment VIII during copulation. Mesal dorsocaudal incision wide, shallowly sinuate. Tergal surface smooth, produced, provided by tiny, closely-set microtrichiae; devoid of setae except at apex of ventrocaudal corners. Tergite VIII produced; with laterad orienting sutures slightly separating sclerotized pleurotergum. Pleurosternum ( sensu Denning 1943 ) or posterolateral apodeme ( sensu Schefter & Ward 2002 ) narrow, more sclerotized at anterior and posterior ends, almost not in between; parallel-sided, fused obliquely to dorsal margin of sternum VIII; separated by well-developed suture; setose only on posterior margin, functioning as the third although weak chelum. Sternum VIII triangularly rounded; with flanking ventrocaudal, lobe-like corners. Ventral plate ( sensu Nielsen 1980 ) or lateral plate ( sensu Denning 1943 ) formed by deep, narrow mesal incision almost entirely separating sternum into 2 lateral plates connecting anterior part of antecosta. Lobe-like corners, together with distal margin covered by long, stiff, setae flanking and protecting fused membranous sternum IX. Internal surface scarcely setose. Setose ventrocaudal lobes forming third support of copulation chelum of segment VIII. Beside long setae on ventrocaudal lobes, posterior half of sternum VIII covered scarcely by short setae; basal part smooth. Tergum IX vertically elongate in lateral view; directed obliquely to main axis of abdomen, narrowing slightly ventrad, without lateral lobe on ventrodistal corners of segment IX. Narrow antecosta present on anterior margin, with slightly visible acrotergites on dorsum in lateral view. Dorsal margin rounded. Posterodorsal margin of segment IX with small rim-like margins on both sides, each with 3 long, stiff, separate setae, corresponding to group of 4–5 usually closely set setae almost forming brush on both sides of dorsocaudal margin in most species within Hydropsychinae . Sclerotized ridge running along central part of tergum IX from near apicodorsal corners, and from minute clasper receptacles, ventrad to one-third the segment length; delineating small, depressed, distal cavity of clasper grooves. Clasper receptacles reduced into small, sinuous, cavity covering lobes, may provide fitting room for male harpagones while broad distal end of coxopodites filling depression of clasper grooves. Less distinct suture delineating weakly pigmented, short, tergum X along distal margin. Tergum X representing body of upper lip of atrium ( sensu Nielsen 1980 ) forming pair of foliate, flat lobes with short setae nested in large, wart-like, alveoli and at tridactylate short lobes. Dorsal lobe largest, middle process, or cercus ( sensu Nielsen 1980 ), digitate, slen- der, with 2 apical setae. Dorsal and ventral processes blunt, covered by tiny, peg-like setae on dome-like alveolar membranes in deep alveoli being visible only at high magnification. Sclerotized, setose, foliate, small, flat, lobe, possibly representing rudimentary sternal lobes, or lateral tergal plate ( sensu Denning 1943 ) concealed under foliate principal setose lobes of tergite X. Lobes connected by smooth, membranous, triangular, median body surrounding dorsal part of vaginal opening connected basally to lower lip. Lower lip of atrium ( sensu Nielsen 1980 ), or vulvar scale ( sensu Schmid 1998 ), that is sternal portions of segment IX, usually forming distended, bag-like structure. Vaginal apparatus in cleared abdomen mostly membranous; slightly sclerotized; sinuate, thin strip connecting lower lip with sclerotized tergum IX, as well as pair of slightly sclerotized plates on dorsum of lower lip.