Text Box: bText Box: aHasko1.JPG

Image 1. Blaberidae: Rhicnoda natatrix.

a - adult male, length, 22.5mm, India, Maharashtra, Pench: Ambakhori-Totladoah forest stream;

b - nymph, length, 10.0mm, Nepal, Makwanpur, Sim-Khola, middle reach.

Text Box: bText Box: aHasko2.JPG

 

Image 2. Blaberidae: Rhicnoda rugosa.

a - adult female, length 36.5mm, Nepal, Shivapuri, Dhobi-Khola;

b - adult male length, 23.0mm, Nepal, Seti Nadi, Tributary in Pokhara Valley.

 

 

Table 1. Investigated Specimens of Rhicnoda spp. from Nepal and India

 

Locality/Species

Rhicnoda natatrix

Rhicnoda

rugosa

[body length of

[body length of

 

preserved

preserved

 

specimen]

specimen]

 

 

 

Sim-Khola, Daman

8.5mm nymph

 

(Middle reach)

9.5mm nymph

 

 

10.0mm nymph

 

 

10.5mm nymph

 

 

10.5mm nymph

 

First tributary of Sim-Khola, Daman

9.0mm nymph

 

Dhobi Khola , Bagmati watershed

9.5 mm nymph

10.5mm nymph

 

(not preserved)

36.5mm female adult

Sungure Khola, Godavari

8.5mm nymph

 

Godavari Khola, Godavari

10.5mm juvenile

11.5 nymph (not preserved)

Jakeshwori Khola,  Melamchi

12.0mm nymph

 

 

 

 

Pench forest stream, spring region

14.0mm nymph

 

 

10.5mm nymph

 

Pench, Ambakori Totladoah

13.0mm nymph

 

 

18.5mm male adult

 

 

22.5mm male adult

 

Forest stream,

 

23.0mm male adult

Seti Watershed , Pokhara valley

 

 

Total number of specimens

14

3

 

 

Table 2. Characteristics of different stream habitats with Rhicnoda natatrix in Nepal and India

 

Locality

Biocoenotic Zone, Typology

Taxa No.

Water Quality Class

NEPBIOS

Water Quality Class

GRS-BIOS

Water Quality Class

HKHBIOS

Sim Khola midstream

Metarhitron

29

I

I

I

First Tributary of Sim Khola

Epirhithron

42

I

I

I

Tributary of Ghatte Khola*

Epirhithron

10

I

I

I

Pench, forest spring stream

Hypocrenon

12

I

I

I

Ambakhori-Totladoah forest stream*

Metarhithron-

Hyporhithron

11

III

II

IV

Average

 

20.8

1.4

1.2

1.6

 

 

Table 3. Macro-invertebrate fauna of different Rhicnoda-habitats in Nepal

 

Abundance per Locality

Order

Family

Genus species

I

II

III

IV

V

Ephemeroptera

Baetidae

Baetis sp.

2

1

1

2

2

　

　

Baetiella sp.

1

 

 

 

 

　

　

Pseudocloeon sp.

2

 

 

 

 

 

Heptageniidae

 

 

 

2

 

1

　

 

Iron sp.

1

 

 

 

 

　

　

Ecdyonurus sp.

2

 

 

 

 

　

　

Notacanthurus sp.

2

1

 

 

 

 

Caenidae

 

 

 

 

 

1

　

Ephemeridae

Ephemera sp.

1

1

2

1

2

 

Ephemerellidae

 

 

 

3

 

3

 

Leptophlebiidae

 

 

 

2

 

 

　

 

Indialis sp.

1

 

 

 

 

 

 

Habrophebiodes sp.

1

 

 

 

 

　

　

Serratella sp.

1

 

 

 

 

Plecoptera

Perlidae

 

 

 

4

3

 

 

 

Kamimura sp.

2

2

 

 

 

　

　

Tyloperla sp. cf.

1

 

 

 

 

 

Perlodidae

 

 

1

 

 

 

 

Nemouridae

 

 

 

3

3

2

　

 

Amphinemoura sp.

1

 

 

 

 

 

 

Mesonemoura sp.

 

2

 

 

 

　

Peltoperlidae

　

2

 

 

 

 

Trichoptera

Hydropsychidae

Hydropsyche sp.

2

3

2

3

 

　

Odontoceridae

　

1

1

 

 

 

 

Philopotamidae

 

 

3

2

2

 

 

Limnephilidae

Potamophylax sp.

 

2

 

 

 

 

Lepidostomatidae

 

 

 

2

4

1

　

 

Paraplegopteryx sp.

1

2

 

 

 

 

Helicopsychidae

 

 

 

2

 

 

 

Polycentropodidae

 

 

2

 

 

 

 

Glossosomatidae

 

 

 

 

 

1

　

Rhyacophilidae

　

2

 

 

1

 

Lepidoptera

Pyralidae

 

 

 

1

 

 

Megaloptera

Corydalidae

 

 

 

1

 

 

Coleoptera

Elmidae

 

 

 

1

1

1

 

 

Stenelmis sp.

1

1`

 

 

 

　

　

Grouvelinus sp.

2

2

 

 

 

 

Psephenidae

 

 

 

1

3

1

　

Scirtidae

　

2

2

1

2

1

　

Hydraenidae

　

1

1

 

 

 

 

Dryopidae

 

 

1

 

 

 

 

Dytiscidae

 

 

1

2

1

 

 

Larvae indet.

 

 

 

 

1

 

Heteroptera

Hebridae

　

1

 

 

 

 

 

Mesoveliidae

 

 

1

 

 

 

 

Gerridae

 

 

 

 

 

1

Odonata

Epiophlebiidae

Epiophlebia laidlawi　

2

2

 

 

 

 

Gomphidae

 

 

1

1

1

1

 

Corduliidae

 

 

 

 

1

 

 

Libellulidae

 

 

 

 

 

1

 

Macromiidae

 

 

 

 

 

1

 

Cordulegastridae

 

 

 

1

1

1

 

Aeshnidae

 

 

1

2

1

 

 

Euphaeidae

 

 

 

2

3

2

 

Coenagrionidae

 

 

1

 

 

 

 

Calopterygidae

 

 

1

 

 

 

Diptera

Limoniidae

　

1

2

2

1

1

 

Athericidae

 

 

1

2

2

1

 

Ceratopogonidae

 

 

1

1

 

 

 

Chironomidae

Chironominae

 

 

 

1

1

 

 

Orthocladiinae

 

2

1

 

2

 

 

Tanypodinae

 

1

 

1

 

 

 

Tanytarsini

 

2

 

 

 

 

Dolichopodidae

 

 

1

 

 

1

 

Sciaridae

 

 

2

 

1

1

 

Tabanidae

 

 

1

1

 

 

　

Simuliidae

　

1

2

 

 

3

　

Tipulidae

　

1

2

4

4

2

 

Empididae

 

 

 

 

1

1

 

Muscidae

 

 

 

 

 

1

 

Scatophagidae

 

 

 

 

 

1

 

Culicidae

 

 

 

 

 

1

Blattodea

Blaberidae

Rhicnoda natatrix

1

2

1

1

 

 

 

Rhicnoda rugosa

 

 

1

 

1

Chilopoda

 

 

 

1

 

 

 

Oniscoidea

 

 

 

1

 

 

 

Decapoda

Potamidae

Himalayapotamon spec.

1

 

 

 

1

Tricadida

Planariidae

 

 

3

2

 

2

Lumbricina

Megascolecidae

Perionyx fluviatilis　

1

1

2

 

1

Tubificina

Tubificidae

 

 

 

 

 

2

Hirudinida

Salifidae

Barbronia nepalensis

 

 

1

 

 

Prosobranchia

Pomatiopsidae

Tricula montana

 

 

 

2

1

 

 

Tricula godavarierensis

 

 

 

 

1

 

 

Erhaia suguriensis

 

 

 

2

 

Basommatophora

Planorbiidae

Segmentina calatha

 

1

 

 

 

Veneroida

Sphaeriidae

Pisidium casertanum

 

2

 

 

 

 

 

Pisidium atkinsonianum

 

 

2

 

1

 

 

Pisidium annandalei

 

 

 

2

 

Total Number of Taxa

29

42

33

31

39

 

 

Table 4. Macro-invertebrate fauna of different Rhicnoda-habitats in India (Pench).

 

Abundance per Locality

Order

Family

Genus species

VI

VII

Odonata

Libellulidae

 

1

 

 

Platycnemididae

 

Adults

 

 

Gomphidae

cf. Nihonogomphus sp.

 

2

Heteroptera

Naucoridae

 

1

1

 

Veliidae

Microvelia sp.

3

3

Coleoptera

Dytiscidae

 

2

2

 

Scirtidae

 

1