Lepidostoma mechukaense, Parey & Received & Online, 2013

Parey, Sajad Hussain, Received, Malkiat Singh Saini & Online, Published, 2013, Two new species and 2 first records of the genus Lepidostoma Rambur, 1842 (Trichoptera: Lepidostomatidae) from the Indian Himalayas, Turkish Journal of Zoology 37 (6), pp. 768-772 : 769-771

Lepidostoma mechukaense sp. nov. (as shown in Figures 7 –11)

Male in alcohol brown. Antennal scapes (Figure 11) each 1.4 mm (n = 1), with tiny dorsal projection at midlength. Maxillary palps each (Figure 11) 0.98 mm (n = 1), 2-segmented, basal segment 3× longer than distal one. Length of each forewing 7.8 mm (n = 1), venation similar as in L. curvatum .

Male genitalia (as shown in Figures 7 –10): Segment IX annular, posterodorsally extraordinarily bulged, acute at its center, sides somewhat triangular in dorsal view ( Figure 7); anterolateral and posterolateral margins concave in lateral view (Figure 9); posteroventrally truncate in ventral view (Figure 8). Segment X excised at its center forming 2 pairs of processes; dorsolateral processes triangular and dorsomesal processes rounded in dorsal and lateral views ( Figures 7 and 9), apex of each process bearing setae, dorsomesal and dorsolateral processes separated from each other by wide space, dorsomesal processes close together ( Figure 7); in lateral view segment X broad at base and notched at tip, dorsolateral processes each slender, triangular (Figure 9). Inferior appendages each singlesegmented and cylindrical near base, abruptly narrowed in slender apically blunt apicodorsal process slightly longer than second process, basodorsal process digitate in lateral view (Figure 9). Phallus with phallobase dilated, phallicata cylindrical, parameres absent.

Diagnosis: Also a species in the L. ferox branch ( Weaver, 2002), the male of this species resembles that of Lepidostoma betteni ( Martynov, 1936) , but it can be differentiated from the latter by having scapes straight (scapes curved in Lepidostoma betteni ); maxillary palps each 2-segmented, first segment straight and second apically slightly curved (maxillary palp apparently singlesegmented and curved upwards in Lepidostoma betteni ); segment IX triangular near sides in dorsal view (segment IX rounded near sides in dorsal view in Lepidostoma betteni ); segment X narrowly excised near center in dorsal view (segment X broadly excised near center in Lepidostoma betteni ); dorsolateral process of segment X acutely produced (dorsolateral process of segment X slightly triangular of Lepidostoma betteni ); basodorsal process digitate in lateral view (basodorsal process slender in lateral view in Lepidostoma betteni ).

Female: Unknown.

Etymology: This species is named after its type locality.

Material examined: Holotype male INDIA: Arunachal Pradesh: Mechuka, 3600 m, 29-iv-2010, collector Sajad H Parey. Holotype deposited in the Museum of Zoology and Environmental Sciences, Punjabi University, Patiala, India .

New species records for India:

Lepidostoma liber Malicky : (Description and figures by Malicky 2007, p. 490, plate 11).

IF

X

P

PH

IX

F gure 1

F gure 2

S BDP MP

F gure 3

F gure 4

F gure 5

LP

P

PH

1 2

5 Anal groove F gure 6 Pseudocell

F gure 7 F gure 8

F gure 11 F gure 9

F gure 10

Material examined: India 2 males: Arunachal Pradesh, Loomla , 07-x-2010, collector Sajad H Parey.

Lepidostoma simplex Kimmins, 1964 : (Description and figures by Kimmins, 1964, pp. 54–55, figures 48–51).

Material examined: India 4 males: Uttarakhand, Pithoragarh , 13-vi-2008, collector Sajad H Parey.