Hydromanicus topali 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 : 48-50

Hydromanicus topali Oláh & Johanson , new species

Fig. 71–74

Hydromanicus topali , new species is morphologically similar to H. spatulata Martynov from the same area in Karnataka in India as H. topali , new species was collected. Together with H. naraik , new species and H. palnis , new species, these 4 South Indian species form a species cluster with very peculiar phallothecal apex. The uniquely formed cornute sclerotized endothecal process is unique for each of the 4 species. The lateral shape of segment X, the preanal appendages, and the harpagones, also hold valuable characters for distinguishing the species. In H. topali , new species the mesal lobe of the excised harpagones is much broader than the lateral lobe, the opposite of that in H. spatulata ; in lateral view segment X is thicker and less curved ventrad compared to in H. spatulata ; and the sclerotized endothecal process is long compared to that in the other 3 species.

Male. Body and wings yellow. Forewing membrane uniformly coloured. Sternum V without process or protuberance. Maxillary palp formula I-IV-III-II-V. Maxillary palp short, reaching end of mesonotum. Dorsum of head yellow, with 7 warts of same colour as rest of head. Swollen setal wart absent on proepisternum, small setal wart present on precoxale (proepisternum). Pretarsal claw symmetrical, not laterally flanked by setal bundle. Spur formula 244; protibiae with posteroapical spur smaller than anteroapical spur.

Wings. Venation typical for the genus. Forewing crossveins m-cu and cu separate. Sc and R separate at costa. Cu2 and A open, reaching costa separately. Hind wing Sc and R meeting at crossvein r before costa. Stem of M and Cu1 running distantly from each other. False vein of convolution running close to stem of Cu1. Median cell open. Fork 1 present. Forewing length 9.8 mm, hind wing length 7.0 mm.

Male genitalia. Abdominal segment IX fused annularly, short; ventrum about 3 times longer than dorsum ( Fig. 71). Median keel very short, broad ( Fig. 72); dorsal and lateral surfaces granulose; keel with slopes separated into 2 narrow lobes ( Fig. 72); anterior margin shallowly arciform. Antecosta well developed, forming single line, narrowing gradually dorsally and ventrally before margin. External groove of antecostal suture well developed. Apical lobe on posterolateral margin small, triangular, located immediately dorsally of gonocoxite bases. Longitudinal sutures dividing segment IX ventrally of apical lobes ( Fig. 1). Posterior spine row intermittent, present from apical lobe to segment X; 2 or 3 equally long setae present on slope of broad median keel; setal patch present ventrally of longitudinal suture ( Fig. 71). Depression between segments IX and X stepwise, with obtusely angled step corner. Segment X triangular, with blunt, obliquely ventrad directed apex in lateral view ( Fig. 71); narrowing apically in dorsal view ( Fig. 72). Preanal appendages forming pair of long filiform, and half as long, filiform plates covered by setae nested in elevated alveoli. Apicoventral setose lobes modified into pair of short, digitiform processes apically on segment X ( Fig. 72); blunt, broad in lateral view ( Fig. 71), distal part covered by setae. Dorsal, interlobular gap narrow, deep, demarcated by apicoventral pro- cesses. Apicodorsal setose lobe reduced to flat surface merged with apicoventral lobe. Smooth cavity on segment X absent. Traverse and longitudinal sutures on segment X absent. Coxopodites basally wide, straight; strongly exceeding apex of segment X; stout, slightly narrowing at basal half, broadening apically in lateral view ( Fig. 71); slightly curving mesad and nearly uniformly broad in ventral view ( Fig. 73). Harpagones broad; apex slightly excised; mesal lobe broader in ventral view ( Fig. 73) than in lateral view ( Fig. 71). Phallic apparatus ( Fig. 74) with basal section curving ventrad, angled obtusely. Broad tube of horizontal phallotheca with straight dorsum, only slightly constricted at mid-length. Distal part of phallotheca ending in 2 pairs elaborated, sclerous processes; the smaller process pair located dorsally, forming beaked phallotremal sclerites surrounding phallotrema; the larger process pair originating at mid-length of apex, forming cornute sclerous endothecal processes, characterized by dorsomesad curving, long, slender, corniform arc. Pair of mediumsized, membranous, ventral, endothecal lobes present apicoventrally; cover basal part of sclerous endothecal process. Endophallus reflecting shape of phallotheca, ending anteriorly in narrow ventrad curving, short, tube with gonopore.

Holotype male: INDIA: Karnataka, Shimoge District, Jog Falls , 5.iii.1980, MV lamps [Gy. Topál] ( NHMB) . Paratype: same data as holotype - 2 males ( OPC, in alcohol); Jay, 28.x.1914 [ T. R. Bell] - 2 males (B.M. 1934-394, NHML). Distribution. India. Etymology. topali , named after the collector of the species, Gy. Topál, to remember the fieldwork we carried out together in Vietnam in the year of 1987 .