1 NOTES ON SPECIES (HABITATS, HABITS AND ANY THING INTERESTING) CHECKLIST OF NZ PLECOPTERA Prepared by Ian McLellan, Westport – updated June 2003 There are 104 described species and a number still to be described. The total will be over 110 and may be as high as 130. All genera and species are endemic to New Zealand apart from the genus Notonemoura, which is shared with Australia although the species are endemic to each country. SUBORDER ANTARCTOPERLARIA Zwick, 1973 FAMILY AUSTROPERLIDAE Tillyard, 1921 Genus Austroperla Needham, 1905 Austroperla cyrene (Newman) 1845: Austroperla cyrene (Newman, 1845) Common name is black stonefly. Well known to anglers. A successful colonizer (even able to exist in the saltwater wedge of estuaries) as a shredder, collector, browser utilising decaying wood, leaves and their saprophytic fungi, fine organic particles, stone surface organic layers, algae and even dead insects. Hydrogen cyanide found in its body tissues makes it unpalatable and this defence is backed up by warning coloration in adults. Two other stonefly species mimic its coloration so much that collectors have labelled them as A. cyrene. FAMILY EUSTHENIIDAE Tillyard, 1921 Genus Stenoperla McLachlan, 1866 Stenoperla helsoni McLellan, 1996 (males short winged) Stenoperla hendersoni McLellan, 1996 Stenoperla maclellani Zwick, 1979 Stenoperla prasina (Newman, 1845) Common name for all species is Large Green Stonefly. Well known to anglers. Early instar nymphs of S. prasina feeed on diatoms and algae but later become carnivorous feeding mainly on the nymphs of mayflies, Deleatidiurn, Coloburiscus, Ameletopsis, and Oniscigaster, but also prey upon blepharicerids, chironomids, other small stoneflies, fish eggs and even upon their own species. Nymphs come out at night and actively hunt the substratum. They will not eat dead food, but must have living prey, which is killed and devoured on the spot (Helson 1934, Winterbourn 1974). Sometimes found in the saltwater wedge of estuaries. FAMILY GRIPOPTERYGIDAE Enderlein, 1909 The anal gill rosette is probably the most outstanding feature of gripopterygid and Zelandobius nymphs. Megaleptoperla nymphs pulsate the rosette by retracting and extending it rhythmically and increase the beat as the level of dissolved oxygen drops. Zelandobius larvae waggle the abdomen from side to side with the rosette extended and again a drop in oxygen content results in an increased speed of waggle. These two methods of creating a greater flow of water across the gills has probably arisen during an ancestral sojourn in warmer or still waters. Other gripopterygids don’t have such respiratory behaviour but are able to 2 retract the rosette under unfavourable conditions (McLellan 1975). Subfamily Zelandoperlinae McLellan 1977 Tribe Zelandoperlini McLellan 1977 Genus Zelandoperla Tillyard, 1923 There are obvious biotype associations for some New Zealand species of stoneflies. For example, Zelandoperla agnetis and Zelandobius confusus are associated with stony streams that carry little suspended material in flood, however they are replaced by Zelandoperla decorata and Zelandobius furcillatus when the amount of suspended material increases. Zelandoperla agnetis McLellan, 1967 Zelandoperla decorata Tillyard, 1923 Zelandoperla denticulata McLellan, 1967 Zelandoperla fenestrata Tillyard, 1923 Zelandoperla pennulata McLellan, 1967 (micropterous) Zelandoperla tillyardi McLellan 1999. This is one of the species which mimics Austroperla cyrene in colour. Genus Rungaperla McLellan, 1977.Endemic to Campbell 1sland Rungaperla campbelli (Illies, 1963) (apterous) Terrestrial under stones and on rocks far from water. The larvae consequently have reduced gills. Rungaperla longicauda (Illies, 1963) (apterous) The larva of this species was described by Illies (1963); the adults remain unknown. The larva lives in streams; a well-developed gill tuft proves that it is fully adapted to aquatic respiration. Tribe Megaleptoperlini McLellan 1977 Genus Megaleptoperla Tillyard, 1923 In Megaleptoperla the eggs are mature at the end of the larval existence; therefore, eggs are laid a few days after they emerge. Nymphs have pulsating gills. Megaleptoperla diminuta Kimmins, 1938. Inhabits vegetation in running water but in the south of the South Island it is also found in stony streams. It is possible that the southern ones are a new species. Megaleptoperla grandis (Hudson, 1913). Nymphs live among the boulders and stones of swift flowing streams. Tribe Acroperlini McLellan 1977 Genus Acroperla McLellan, 1977 Acroperla flavescens (Kimmins), 1938. The colour in this yellow species leaches out in ethanol and is lost in pinned material, leaving it a uniform light brown. Acroperla christinae McLellan 1998. The bright green of this species leaches out in ethanol and is lost in pinned material, leaving it a uniform light brown. Acroperla spiniger (Tillyard, 1923) 3 Acroperla samueli McLellan, 1977 Colour may be brown and grey to green. The holotype was obviously a brown and grey stonefly verified from the photograph I took of it on the surface of a tarn. The other specimens I had previously collected in the Buller River apart from a green female and nymph were not green. The specimens from O'Conors Creek were probably brown because I am sure at that time such an unknown animal as a green gripopterygid would not have passed unnoticed. The green specimens I collected from the Cropp River were quite outstanding in life but the green disappeared after a few days in ethanol. At first I thought I was dealing with a new species but after examining and comparing them against the others I could find no difference apart from colour. There are no records of the colour of specimens not collected by me. This difference in colour may be caused by diet, as Farrow (1975) quoted here for the Australian plague locust (Chortoicetes terminifera), "Food quality affects overall size and general coloration, thus succulent vegetation causes size increases and green coloration while in dry vegetation, size declines and brown coloration predominates." Acroperla trivacuata (Tillyard, 1923) HABITATS: This species has adjusted the timing of its univoltine life cycle to take advantage of the rich food source available in flood swept detritus under the stones of stream flood plains. During autumn early instar nymphs are found in the water but later when moist conditions and lower temperatures occur they move out, for the remainder of their larval existence, into their now more suitable terrestrial habitat. There adults emerge in spring and early summer. From then until autumn no nymphs are found so it is thought that the eggs remain in quiescence until the temperature falls to the required level. A. trivacuata does not move as far out on the flood plain as the other winged species Nesoperla fulvescens. A. trivacuata is usually associated with stony streams. In Northland, it lives in such streams, but in the vicinity of Rawene and Kaikohe Trevor Crosby and I found nymphs in watercress, milfoil, and rushes, either under water or out in vegetation. in permanent water drainage ditches. In New Zealand, stoneflies are not considered lake dwellers, but this supposition has arisen from lack of observation, for I have found A. trivacuata at Lake Brunner, on the shoreline in the splash zone under stones out of water. Brian Patrick (pers. comm.) on A. trivacuata at islands in Lake Wakatipu, stated: "The Pigeon Island and Pig Island stoneflies were definitely breeding in a sheltered part of the lake shore. Nymphs common under stones in shallow water. There are no streams on either island." Peter Johns notes on his collection label: "nymphs, Bobs Cove, L. Wakatipu, under stones at mid to top of beach in debris (leaves etc)." Frequently I have collected adults when whitebaiting at Martins Island in the estuary of the Buller River well within the influence of the salt water wedge. At Sandhill Creek in North-west Nelson, Ian Townsend and I collected nymphs at spring tide level under stones out of water, and at Tauranga Bay Stream near Westport I found nymphs at spring tide level in a stream a few centimetres deep at low tide. I have had similar experiences with the antarctoperlinid Zelandobius furcillatus, the eustheniid Stenoperla prasina, and the austroperlid Austroperla cyrene but have no idea whether the nymphs of these species have some tolerance of the salt water of the wedge or move during tidal inflow to the fresh water above it. 4 It appears that these common species adapt well to different aquatic habitats, and this is probably the reason why it is so widespread through New Zealand Genus Apteryoperla Wisely 1953 (all spp. Apterous) All of the gripopterygid species described here are wingless and terrestrial or semiterrestrial apart from A. illiesi. Prior to Kimmins’ (1938) pioneer work on the genitalia of some New Zealand stoneflies, the systematics of our stoneflies was still dependent on wing venation, making it difficult to assign apterous species to genera. The usual course of action was to consign them to Apteryoperla which was raised by Wisely (1953) for the two apterous species A. monticola and A. angularis. Illies (1963) placed Apteryoperla campbelli and Apteryoperla longicauda from Campbell Island and Apteryoperla turbotti from Auckland Islands in the genus and in 1974, A. kuscheli from Auckland Islands. McLellan (1977) described four species, which he placed in Apteryoperla. Now that the genitalia of the majority of our species have been described it is possible to assign apterous species to genera by comparing their genitalia with that in available generic diagnoses. However, there is still work to be done in rectifying these misplacements. So far McLellan (1977) has removed A. angularis to Holcoperla, the Campbell Island species to Rungaperla and placed kuscheli in Aucklandobius Enderlein 1909, which contains the other species from Auckland Islands. Apteryoperla monticola Wisely, 1953 Apteryoperla illiesi McLellan, 1977 Apteryoperla nancyae McLellan, 1977 Apteryoperla ramsayi McLellan, 1977 Apteryoperla tillyardi McLellan, 1977 Apteryoperla lakiula McLellan, 2003 Genus Aucklandobius Enderlein 1909 All are endemic to the Auckland Islands. Aucklandobius complementarius Enderlein 1909 The larvae inhabit streams Aucklandobius gressitti Illies, 1963 (apterous). The larvae inhabit streams. Aucklandobius kuscheli (Illies, 1974) (apterous) The species is recorded from high elevations far from any watercourses. The larvae are terrestrial. Aucklandobius turbotti (Illies, 1963) (apterous) The larvae are terrestrial Genus Holcoperla McLellan, 1977. Alpine stoneflies. All apterous with terrestrial nymphs. Holcoperla angularis (Wisely, 1953) Holcoperla jacksoni McLellan, 1977 Holcoperla magna McLellan 1983 Genus Nesoperla Tillyard, 1923 Nesoperla fulvescens Tillyard, 1923. Micropterous to apterous in North Island alpine zone. Fully winged elsewhere and restricted to lower altitudes. Nymphs of winged 5 populations on the 2 main New Zealand islands take advantage of the rich food source available in flood swept detritus under the stones of stream flood plains. During autumn early instar nymphs are found in the water but later when moist conditions and lower temperatures occur they move out into their now more suitable terrestrial habitat for the remainder of their larval existence. This is made possible by the univoltine life cycle of these species which is as follows. The adults emerge in spring and early summer and from then until autumn no nymphs are found so it is thought that the eggs remain in quiescence until the temperature falls to the required level. I have found nymphs some considerable distance from running water up to 400 metres in the bywash channels of Ananui Ck above Ananui (Nile or Metro) Caves in the Buller District. Nesoperla johnsi McLellan, 1977 (micropterous). Found in Penguin Creek and Koho Stream on The Snares. The female has sternite 8 produced posteriorly to a point, forming a rudimentary ovipositor with a short and raised sternite 9. Nesoperla patricki McLellan, 2003. Apterous. HABITAT: Brian Patrick states, “Adults have been swept from copper tussock (Chionochloa rubra cuprea) in addition to being found deep in these large tussocks where they live amongst the stems and leaf litter.” Genus Rakiuraperla McLellan, 1977 Rakiuraperla nudipes McLellan 1977 (apterous) Stewart Island endemic species This alpine species is found at higher altitudes in the north but at lower altitudes in the south of the island, because of the lowering of alpine zone with increasing latitude and harsher climate. Peter Johns (Canterbury University) collected specimens around Port Pegasus at about 47º 10’S.There he found the type material of adults and nymphs under exfoliate granite debris on Bald Cone at 250-270m, on Magog (Fig. 2) at 150-300m, and later nymphs on Hielanman Top at 50m. Willie Kuschel and later Brian Patrick and Eric Edwards found nymphs of this species, at 600m at 46º 57’S, on Mt Rakeahua They are completely wingless and terrestrial with short antennae and very short palps and cerci. Oddly the adults have no empodia between the tarsal claws a feature found only in one other stonefly in the world, the gripopterygid, Andiperla willinki found in glaciers in the southern Andes. Both are alpine and the lack of empodia and shortness of the other appendages would be an advantage in helping to conserve heat during winter weather. Genus Taraperla McLellan, 1998 Early instar nymphs either with a pair of long upcurved spines postero-laterally on each posterior angle of the pronotum and antero-laterally on each side of the other nota; body and legs covered with long hairs. Or with nota greatly flanged laterally and body and legs without hairs. Both juvenile forms have abdominal segment 10 elongated and subanal lobes tongue-shaped. Taraperla ancilis (Harding and Chadderton)1995 Taraperla howesi (Tillyard) 1923 BIOLOGICAL NOTES: Most of the spiny, hairy, early instars seen were found while Prof. Bob Pilgrim was searching for mecopteran larvae in the bottoms of pools in small zero or first order streams with a 6 substrate of predominantly fine material (sand and silt) containing organic debris. Those collected by Dr Guillermo Kuschel were found in a similar habitat. The one I found was under moss on a soft mudstone surface, and Dr John Ward noted that his was found in rotten wood. Later instar nymphs are terrestrial living under stones out in the floodplains of streams Taraperla pseudocyrene McLellan 1998. Adults have such a similar colour pattern to Austroperla cyrene that some of the material handed to me had been labelled as such. The wings look black when folded, and the forewings are white at the base. The body and legs are black apart from the tibiae which have a medial bright yellow bar. Two other gripopterygids which have a similar resemblance to A. cyrene, It is not known if these species use their conspicuous black, white, and yellow pattern as a warning of unpalatability like Austroperla cyrene or if they are just mimics. Taraperla johnsi McLellan, 2003 (apterous). Nymphs semi-terrestrial. Adults swept from a mixture of copper tussock (Chionochloa rubra cuprea) /Hebe odora grassland / shrubland. They have a ventral colour pattern which is unusual in most stoneflies, although Vesicaperla species have one. It is possible that such a pattern acts as camouflage in a terrestrial habit. Subfamily Antarctoperlinae Enderlein 1909 Genus Vesicaperla McLellan, 1967 Apterous apart from Vesicaperla townsendi which has minute vestigial wingflaps. Terrestrial with a ventral colour pattern which is unusual in stoneflies. The females of V. substirpes and V. celmisia and V. trilinea have ovipositors but the remaining species do not. They are the only New Zealand antarctoperlines with ovipositors. Only two other gripopterygids have such a prolongation of the subgenital plate (Nesoperla johnsi The Snares, NZ and Teutoperla auberti from Chile). Vesicaperla dugdalei McLellan, 1977. Vesicaperla eylesi McLellan, 1977. Vesicaperla kuscheli McLellan, 1977. Vesicaperla substirpes McLellan, 1967 (apterous). HABITAT:The first specimen, a female, was found in a patch of boulders at 3,600ft, 22/xii/64. Further searching during that season failed to produce more specimens. On 30/x/65, 37 nymphs were collected. The first specimen was found beneath a stone at 3,400ft; the second was collected from beneath a decaying celmisia at 3,600ft, and the remainder were discovered beneath the bones of a deer (Ceruus elaphus) at 3,40qft in a mixture of decaying vegetation and what remained of the deer after two years weathering. The above record would indicate that the habitat is most likely in decaying vegetation-a radical departure from the known habitats of wingless stoneflies. The climate of the area' is consistent with that of areas where apterous terrestrial stoneflies have previously been found (Wisely, 1953; and Illies, 1963b). Annual precipitation is high (approximately 200 inches, estimated from Forest Service records for Reefton ) and snowfalls and frosts occur for six-seven months of the year. Twenty nymphs were reared in a glass container partly filled with the decaying vegetation in which they were found. To keep the temperature as near as possible to that of their habitat the container was packed in ice. 7 The nymphs were sluggish and remained in the same position for some time, usually with the mid part of the abdomen against the substrate, the hind end raised and the cerci wide apart. When disturbed both nymphs and imagines would extend antennae and forelegs forward and remaining legs and cerci rearwards, thus making them difficult to be seen in the vegetation. If touched or if the vegetation was moved they would frequently drop and remain extended or assume a relaxed pose for some time. Imagines varied this by scuttling rapidly for cover. On no occasion were nymphs seen in the water which collected in the bottom of the container. Because of the difficulty of observation without disturbance, nymphs and imagines were not observed feeding. The gut contents of nymphs preserved in the field consisted of shreds of tracheophyte material mixed with fungal hyphae and spores. Vesicaperla townsendi McLellan, 1977 (minute vestigial wings) Vesicaperla celmisia McLellan, 2003. HABITAT AND FOOD: Brian Patrick (pers. comm.) states, “The nymphs of this species from Gem Lake, Umbrella Mts, were exceedingly common at 1300 m, under stones in a damp depression, and amongst the leaf litter-debris at the bases of Celmisia haastii on which they were feeding. In captivity they fed on Muehlenbeckia and lettuce. I kept them for 6 weeks but no adults emerged. The Old Man Mountains specimens were also found amongst Celmisia haastii.” Vesicaperla trilinea McLellan, 2003 (apterous) The nymphs of this species were found in Celmisia plants. Genus Zelandobius Tillyard, 1921 Confusus Group Zelandobius alatus McLellan, 1993 Zelandobius albofasciatus McLellan, 1993 Zelandobius brevicauda McLellan, 1977 (apterous) Zelandobius childi McLellan, 1993 Zelandobius confusus Tillyard, 1923 Zelandobius cordatus McLellan, 1993 Zelandobius dugdalei McLellan, 1993 Zelandobius foxi McLellan, 1993 Zelandobius gibbsi McLellan, 1993 Zelandobius illiesi McLellan 1969. Nymphs live in small forest streams where dead terrestrial vegetation covers the substrate of sand, mud and stones. Here they are found mainly on the fronds of a tree fern Cyathea smithii. Zelandobius inversus McLellan, 1993 Zelandobius jacksoni McLellan, 1993 Zelandobius kuscheli McLellan, 1993 Zelandobius macburneyi McLellan, 1993 Zelandobius mariae McLellan, 1993 Zelandobius montanus McLellan, 1993 Zelandobius ngaire McLellan, 1993 Zelandobius patricki McLellan, 1993 Zelandobius peglegensis McLellan, 1993 8 Zelandobius takahe McLellan, 1993 Zelandobius wardi McLellan, 1993. Is restricted to Banks Peninsula (MC). It has a number of similar features to macburneyi and foxi, and these seem to be sister species. Z. wardi probably stems from stock of their common ancestor, isolated on the peninsula during the Pleistocene. It may have evolved in the same way that Dumbleton (1963) postulated for the blepharicerid fly Neocurupira chi/toni. He considered that during the Pleistocene its ancestor was carried by wind drift from the Southern Alps, over the unsuitable habitat of the developing Canterbury Plains to the ancient volcanic hills of the peninsula. The sister species of this blepharicerid lives in the Southern Alps. Furcillatus Group Zelandobius auratus McLellan, 1993 Zelandobius furcillatus Tillyard, 1923. The nymphs waggle the abdomen from side to side with the anal gill rosette extended and a drop in oxygen content results in an increased speed of waggle. See a video on: http://www.waitakere.govt.nz/AbtCit/ei/EcoWtr/macroinv/images/zelandobius.jpg Sometimes found in the saltwater wedge of estuaries. Zelandobius pilosus Death, 1990 Zelandobius truncus McLellan, 1993 Zelandobius unicolor Tillyard, 1923. Yellow-winged. Zelandobius uniramus McLellan, 1993. No fork in Rs of wings. SUBORDER ARCTOPERLARIA Zwick, 1973 FAMILY NOTONEMOURIDAE Austrocercella Group Genus Spaniocerca Tillyard, 1923 Spaniocerca acuta McLellan, 1991 S. acuta is closely related to S .longicauda. Spaniocerca bicornuta McLellan, 1987 This species inhabits steep stony streams and the adults emerge during all months of the year. Spaniocerca hamishi McLellan 2000 Spaniocerca longicauda McLellan, 1977 The nymphs of S. longicauda inhabit steep, stony streams, usually in forest. Spaniocerca minor Kimmins, 1938 S. minor is found in alpine seepages and water films associated with small waterfalls. Spaniocerca zelandica Tillyard, 1923 This species inhabits a variety of running water habitats ranging from streams, seepages and small rivers in forest and grassland, in both alpine and lowland regions. Winterbourn (2005) found high proportions of S. zelandica adults and nymphs examined from Middle Bush Stream at Cass were infected by the encysted larvae of a gordian worm (Nematomorpha) and may be important vectors in its life cycle. Spaniocerca zwicki McLellan, 1991 S. zwicki has been found in stony streams in forest. 9 Genus Otehiwi McLellan, 2003 Otehiwi sagittarius McLellan, 2003 Notonemoura Group Genus Halticoperla McLellan and Winterbourn, 1968 Nymphs live in seepages, swift shallow water and beneath damp stones associated with springs or the edges of torrents. Unlike the nymphs of most New Zealand stoneflies, they run rapidly for cover when disturbed and are reminiscent of many N.Z. Leptophlebiid mayfly larvae in this respect. Nymphs have been observed resting on damp stones up to a foot above the water surface but when disturbed (e.g., by a shadow passing over them) they immediately move down into the water. Adults use their long hind legs to leap away from danger and usually take wing in mid leap. Their agility and alertness is most unusual in N.Z. Plecoptera although generally the Notonemourinae are more alert and agile than representatives of other families. The females of this genus have long almost U-shaped ovipositors. So far they have not been observed ovipositing but the ovipositor shape and wide tip seem to be the right shape for egg laying under objects. Halticoperla gibbsi McLellan, 1991 Halticoperla tara McLellan, 1991 Halticoperla viridans McLellan and Winterbourn, 1968 Genus Notonemoura Tillyard, 1923 Notonemoura alisteri McLellan, 1968 Habitat. N. alisteri is found in seepages, usually from springs, in rain forest up to the subalpine zone, where it is replaced by N. latipennis. Notonemoura hendersoni McLellan 2000 Notonemoura latipennis Tillyard, 1923 (has winged or micropterous populations) Habitat. Nymphs of N. latipennis are found in alpine and subalpine zones where seepages from bogs or streams form thin films of water over the substrate, in shallow bog pools with a water flow, and in steep outflow streams from bogs. With the heavy spines on their legs they are well equipped to maintain station in quite swift currents. The active adults detect movement well with their large eyes, and like Halticoperla use their long hind legs to launch into flight. Notonemoura spinosa McLellan, 1991 Notonemoura winstanleyi McLellan, 1991 Habitat. The habitat of N. winstanleyi is similar to that of the type species, but this stonefly appears to range from lowlands into the alpine zone. Spaniocercoides Group Genus Cristaperla McLellan, 1972 10 The nymphs of this genus live in fine sediment of small forest streams. Their hairiness is similar to that of other stoneflies which inhabit mud, e.g. the South American gripopterygid Pelurgoperla personata Illies 1963. Cristaperla eylesi McLellan, 1991 Cristaperla fimbria (Winterbourn, 1965) Winterbourn (2005) found high proportions of adults examined from Middle Bush Stream at Cass were infected by the encysted larvae of a gordian worm (Nematomorpha) and may be important vectors in its life cycle. Cristaperla waharoa McLellan 1991 Genus Omanuperla McLellan, 1972 The nymphs of this genus are unknown despite much searching.They probably inhabit the hyporheic zone. Omanuperla bruningi McLellan, 1972 Omanuperla hollowayae McLellan, 1991 Genus Spaniocercoides Kimmins 1938 Spaniocercoides cowleyi (Winterbourn, 1965) Nymphs of this species inhabit The hyporheos of stony streams. They are rarely found unless specialised collecting methods are used, or when adults are emerging. Even at the peak of emergence few are found. Therefore passage to the surface must occur immediately before ecdysis. Spaniocercoides foxi McLellan, 1984 Habitat. Adults and nymphs of S. foxi were found in and around streams draining alpine bogs. Despite intensive searching only two nymphs have been found. It is more than likely that they inhabit hypogean or hyporheic habitats. Spaniocercoides howesi McLellan, 1984 An alpine species inhabiting seepages and small streams.It is possible that the early instars of this species inhabit hypogean or hyporheic habitats. Spaniocercoides hudsoni Kimmins, 1938 The nymph of this species was not found until 2000 when Ian Henderson collected the first in the substrate of a sphagnum bog. This habitat was very different from the habitat where most adults were caught. This is a small, very stable stream, under thick forest canopy, stony with liverworts but with extensive areas of seepage flowing through gravel and sand into it. There is more than a possibility that the nymphs live in the sand and gravel of these seepages just as the larvae of the dragonfly Uropetala do. Spaniocercoides jacksoni McLellan, 1991 The nymph of this species is unknown. Spaniocercoides philpotti Winterbourn, 1965 This species inhabits small wooded or weedy streams and seepages up to 1100m. It is abundant in streams of the Coal Plateau north of Westport. Unlike other species in the genus the nymphs live on the substrate and vegetation. Spaniocercoides townsendi McLellan, 1984 The nymph of this species is unknown. Spaniocercoides watti McLellan, 1984 Rarely collected (lack of collector effort strangely is common near centres of greatest population). The material available for me to describe the species, including types, 11 consists of 5 females and one nymph (see database). After I had seen the above material I visited the localities in September 1982 and searched every conceivable habitat, apart from the hyporeos, but did not find nymphs or adults. The nymph habitat may be in the hyporeos. This is supported by the fact that the only known larva is one ready to emerge. Add to References MICHAEL J. WINTERBOURN, 2005: Dispersal, feeding and parasitism of adult stoneflies (Plecoptera) at a New Zealand forest stream. Aquatic Insects 27(3): 155 – 166 Add to database Spaniocercoides watti, 3f, WO, trib of Kiripaka Stm, S14 919 775, 100m, 20 Oct 1998, BJS.