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Inventory of Australian Megaloptera Larvae and Resulting Implications for the Classification of the Group (Insecta: Neuropterida)

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Inventory of Australian Megaloptera Larvae and Resulting Implications for the Classification of the Group (Insecta: Neuropterida) © Biologiezentrum Linz/Austria; download unter www.biologiezentrum.at Inventory of Australian Megaloptera larvae and resulting implications for the classification of the group (Insecta: Neuropterida) Günther THEISCHINGER Abstract Archichauliodes. Only three of four spe- cies groups of Archichauliodes (Rie- kochauliodes) separable on the basis of adult characters, are distinguished on lar- Abstract: The information avai- val morphology. A key to the larvae of the lable on the larvae of the Australian Mega- now recognised group taxa of the Austra- loptera is presented and used for re-apprai- lian Megaloptera and distributional details sal of some supraspecific taxa. Apochauli- of most species are given in order to initia- odes THEISCHINGER, formerly described as te more thorough studies. a subgenus of Archichauliodes WEELE is accorded full generic status. A new subge- nus, Riekochauliodes, is established for Key words: Megaloptera, Aus- the majority of the Australian species of tralia, larvae, classification. Stapfia 60, zugleich Kataloge des OÖ. Landesmuseums, Neue Folge Nr. 138 (1999), 85-100 85 © Biologiezentrum Linz/Austria; download unter www.biologiezentrum.at Introduction Systematics Some information on the taxonomy of the Family Corydalidae (Figs 1-47) larvae of the Australian Megaloptera was Remarks: All Australian Corydalidae given in the first revision of the group (RlEK belong to the subfamily Chauliodinae. 1954). Presentation of accumulated informati- Larvae: Abdomen with 8 pairs of late- on on the larvae was announced for the futu- ral processes (gills); apical segment of abdo- re in a more comprehensive treatment of the men with pair of prolegs but without terminal adults (THE1SCHINGER 1983). In the meantime and afterwards, keys to the larvae of families filament. and genera of Australian Megaloptera larvae Adults: Three ocelli. Fourth tarsal seg- were given (e.g. RlEK 1970, WILLIAMS 1980, ment simple. Conspicuous pigment spots in THEISCHINGER 1991). wings. In this paper the now available taxonomic Distribution in Australia: information on the larvae of the Australian Eastern Australia, south-western Australia. Megaloptera is presented. This, together with Genera: Apochauliodes THEISCHINGER, some additional information on the adults, Archichauliodes WEELE, Protochauliodes WEELE. makes it possible to re-appraise some of the supraspecific taxa as established by THEI- Archichauliodes group (Figs 1-42) SCHINGER (1983) and should enable to iden- tify larvae to the level of those groups and in Larvae: Head and pronotum rather some cases to the species. smooth, with only scattered long hairs. Left mandible with 4, right mandible with 3 teeth on inner margin (in addition to apical tooth). Material and methods Apical two segments of antennae combined about as long as segment 2. Thorax and abdo- Larval material of Megaloptera from men without prominent intersegmental lobes. eastern and south-western Australia, all of it Posterior pair of spiracles each raised (general- now in the collection of the author and in the ly) or not raised (rarely) on a definite stalk. Australian National Insect Collection Lateral processes of abdominal segments 1-5 (ANIC), preserved in 70-80% alcohol, was longer than width of respective segment. studied. The diagnostic tools available for Adults: 2A of forewing connected to identification of the major taxa were used in 1A by a crossvein. Female valves without late- conjunction with reared material of Archich' ral stylus. auliodes guuiferus (WALKER), A. anagaurus Distribution: Australia, New Zea- RlEK, A. plomleyi KlMMlNS and Protochauliodes land, Chile. biconicus KlMMlNS and with various ways of Genera: Apochauliodes THEISCHINGER, elimination in order to correlate adults and Archichauliodes WEELE. larvae of most species and to produce a preli- minary guide to the Australian Megaloptera larvae. Genus Apochauliodes THEISCHINGER (Figs 1-10) In the following only brief diagnoses of Apochauliodes THEISCHiNGER 1983:80 (as subgenus families, genera and species groups of the Aus- of Archichauliodes WEELE). tralian Megaloptera and a key to those taxa Type species: Archichauliodes (Apochauliodes) cervu- are given. For identification attempts beyond lus THEISCHINGER 1983. that level the distributional overviews may be Larvae (Figs 1-6): Labium not produ- useful. ced medially, truncate. Segment 2 of labial palp not much longer than segment 1. Poster- ior pair of spiracles each raised on a long stalk. Lateral abdominal processes with short hair, those of segments 1-5 distinctly longer than width of respective segment. 86 © Biologiezentrum Linz/Austria; download unter www.biologiezentrum.at Adults (Figs 7-10): Forewing with Distribution: Eastern Australia, CuA simple; male anal claspers bifid, with New Zealand, Chile. laterobasal callosity not protruding; aedeagus Species in Australia: Archich- bifid, symmetrical. auliodes (A.) anagaurus RlEK, A. (A.) simpsoni Distribution: South-western Aus- THEISCHINGER. tralia. Distributions: A. anagaurus is Species: Apochauliodes cervidus (THEI- widely distributed mainly in alpine Victoria SCHINGER). and south-eastern New South Wales; A. simp- Larvae studied: Western Australia: Barlee Brook, soni is known only from Mt Howitt in Victo- S of Nannup; Carey Brook, nr Pemberton; Pemberton. ria. Larvae studied: New South Wales: Brown Mt; Kiandra; Kosciusko Hotel; Pipers Ck, Mt Kosciusko; Sawpit Ck, Mt Kosciusko; Wragge's Ck, Mt Kosciusko; Genus Archichauliodes WEELE Wilsons Valley, Mt Kosciusko. Victoria: Mt Buffalo; (Figs 11-42) Watt's R., Healesville. Archkhauliodes WEELE 1909: 258. Type species: Hermes diversus WALKER 1853. Subgenus Riekochauliodes sub- Larvae (Figs 11-16, 25-42): Labium gen. nov. (Figs 21-42) produced medially. Segment 2 of labial palp Type species: Hermes gumferus WALKER 1853. much longer than segment 1. Posterior pair of Larvae (Figs 25-42): Posterior tooth of spiracles each raised (generally) or not raised mandibles generally smaller than median (rarely) on a definite stalk. Lateral abdominal tooth. Posterior pair of spiracles each raised on processes generally with short, rarely with a definite stalk. long hair, those of segments 1-5 generally Adults (Figs 21-24): Forewing with slightly longer than width of respective seg- tows of spots mostly between longitudinal ment. veins; pigment spots of hindwing variably but Adults (Figs 17-24): Forewing with distinctly enlatged. Aedeagus simple or widely CuA forked; male anal claspers simple, with bifid, slightly to strongly asymmetrical. laterobasal callosity prominent; aedeagus sim- Name : Dedication to Dr E.F. Riek ple or bifid, symmetrical or assymetrical. (Canberra). Distribution: Eastern Australia, Distribution: Eastern Australia. New Zealand, Chile. Species groups: Archichauliodes Subgenera: Archichauliodes WEELE, (Riekochauliodes) guttiferus group, A. (R.) Riekochauliodes subgen. nov. deceptor group, A. (R.) polypastus group. Subgenus Archichauliodes WEELE Archichauliodes (Riekochauliodes) (Figs 11-20) guttiferus group (Figs 21-30) Archichauliodes WEELE 1909: 258. Type species: Hermes diversus WALKER 1853. Larvae (Figs 25-30): Stalk of posterior spiracles shorter than half the distance bet- Remarks: It is assumed that all availa- ween them; posterior spiracles not markedly ble larval material belongs to A. anagaurus larger than spiracles on preceding segments. RlEK. Adults (Figs 21-24): Male anal claspers Larvae (Figs 11-16): Posterior tooth of amost straight, much longer than tergum 9; mandibles generally larger than median tooth. aedeagus simple, asymmetrical. Posterior pair of spiracles each not raised on a Species: Archichauliodes (Riekochauli- definite stalk. odes) guttiferus (WALKER), A. (R.) neoguttiferus Adults (Figs 17-20): Forewing with THEISCHINGER, A. (R.) phaeoscius RIEK, A. rows of dark spots mostly on longitudinal (R.) rieki THEISCHINGER. veins; pigment spots of hindwing hardly enlar- Distributions:A. guttiferus is known ged. Aedeagus bifid, symmetrical. to occur only south of the Hunter River. A. 87 © Biologiezentrum Linz/Austria; download unter www.biologiezentrum.at rieki seems to be endemic to Carnarvon Range A. (R.) piscator THEISCHINGER, A. (R.) unci- in southern inland Queensland. A. neoguttife- natus THEISCHINGER. nis is known only from north of the Hunter Distributions: Only one species, A. River (excluding Carnarvon Range), whereas deceptor, is known to occur south of the Expe- A. phaeoscius has been collected only north dition Range (24° S); all its published recotds from Paluma where it coexists in places (rain- are from north of the Hunter River. Only forest) with A. neogutnferus. recently it has also been found at Black Mtn, Larvae studied: Queensland: Beatrice R., Palmer- A.C.T. Two species, A. cuspidatus and A. gbs- ston N.P.; Behana Gorge, S of Gordonvale; The Boul- sa, are known from the Eungella area ders, Babinda; Broken R., Eungella N.P.; Crystal Casca- (2O°55'S) and Expedition Range (24°° S); of des, nr Cairns; upper Curambin Ck; 16 km on Davies Ck Rd, E of Mareeba; Dayboro; 2 km on Mt Edith Rd, these only A. cuspidatus extends to north of Tinaroo Dam; Finch Hatton; Fishery Falls, S of Gor- Paluma. There are no records of the remaining donvale; 30 km S of Gympie; Kirrama S.F. (Western species (A. collifer, A. conversus, A. lewis, A. Fall); Little Mulgrave R.; Millstream Falls. New South Wales: Allyn R., at Eccleston; upper Allyn R.; Bobun- piscator, A. uncinatus) from localities south of dra Ck, Maffra; Bolairo; Brindabella, A.C.T.; Cabbage Paluma. Tree Ck, Clyde
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