Hydropsyche athamas Malicky & Chantaramongkol 2000

Pandher, Manpreet S., Kaur, Simarjit, Parey, Sajad H. & Saini, Malkiat S., 2017, Review of genus Hydropsyche Pictet 1834 (Insecta: Trichoptera: Hydropsychidae) from India, Zootaxa 4365 (3), pp. 331-360 : 338-339

Hydropsyche athamas Malicky & Chantaramongkol 2000 , NEW RECORD FOR INDIA

( Figs. 31–35 )

Hydropsyche athamas Malicky & Chantaramongkol 2000 , 817

Redescription of adult male: Color in alcohol light brown, covered with scattered pubescence, dorsum of head dark brown. Length from tip of head to apices of folded forewings about 10 mm; maxillary palps each 2 mm long, 2nd segment longer than 3rd and 4th together, 5th almost equal to length of first 4 segments; labial palps each 0.90 mm. Length of each forewing 8.50 mm (n = 3); length of each hind wing 6.90 mm.

Male genitalia ( Figs. 31–35 ): Abdominal segment IX longitudinally short, anterolaterally slightly convex in lateral view; dorsomedian keel produced posteriorly and triangular; posterolateral lobe on each side somewhat triangularly produced, setose, setae not in continuous row with posterolateral slope of keel. Depression of dorsal margin visible between segment IX and tergum X. Body of tergum X short, wide, quadrate in lateral view; roundly quadrangular in dorsal view; apicoventral setose lobes curved ventrad, thick, pointed apically in lateral view; digitate, curved apicomesad, rounded apically in dorsal view; apicodorsal lobes fused medially between apicoventral setose lobes, oval; dorsal interlobular gap wide between apicoventral setose lobes. Inferior appendages each long, basal segment broad at base, dilated medially, broad apically in lateral view; curved mesad in ventral view; apical segment broad at base, digitate, hooked dorsad apically in lateral view, digitate and curved mesad and pointed apically in ventral view. Phallic apparatus broad basally, arched subbasally in lateral view; endotheca slender, with long pair of lateral spines at mid length arched anteromesad in ventral view; pair of small subapical spines on membranous arms laterally and directed anterad, pair of small dorsolateral spines, one long apical spine curved apicodorsad, and three asymmetrical apical spines in lateral view.

Material examined: INDIA: Himachal Pradesh: Saho , 1800 m, 13-ix-2008, 3 males, Pandher & Parey, NPC .

Diagnosis: This species belongs to the Hydropsyche vasuomi Group. It is similar to Hydropsyche xenga Oláh & Johanson 2008 ( Vietnam) and H. brontes Malicky & Chantaramongkol 2000 ( Thailand) in the general plan of male genitalia. However, the wide dorsal interlobular gap; the apicomesally pointed apicoventral setose lobes; and the digitate, pointed apical segment of each inferior appendage makes Hydropsyche athamas a distinct species. Moreover, there is considerable difference in the shape of the phallus.

Distribution: Pakistan; India: Himachal Pradesh.

Figures

FIGURES 31–40. Hydropsyche spp., male genitalia. 31–35, H. athamas Malicky & Chantaramongkol: 31, left lateral; 32, dorsal; 33, right inferior appendage, ventral; 34, phallus, left lateral; 35, ventral. 36–40, H. pallipenne Banks: 36, left lateral; 37, dorsal; 38, right inferior appendage, ventral; 39, phallus, left lateral; 40, phallus, ventral.