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https://doi.org/10.24199/j.mmv.1975.36.02 27 May 1975

NOTES ON ADDITIONS, CHANCJHS AND THE DISTRIBUTION OF THE AUSTRALIAN WATER-BUG FAUNA (HEMIPTERA-HETEROPTERA)

By I. Lansbukv

Hope Department of Entomology, University Museum, Oxford

Introduction Cercotmetus hrevipes australis subsp. n.

By the courtesy of Mr A. Neboiss, National (Figs, 1-3, 7 and 8) Museum of , Melbourne; Dr T. E. Males, 36 5 mm long, respiratory siphon 8 mm Woodward, University of ; Dr T. long, v 38 mm long, respiratory siphon 8 5 Weir, Department of , Dar- mm long. win; Dr I. A. E. Bayly, Monash University and General appearance similar to nominate form, Miss J. Knowles of Monash University, I have differs in features as tabulated below: been able to study several collections of aquatic Heteroptera from various localities, principally hrevipes australis hrcvifu's hrevipes collections Queens- Victoria, with smaller from s 1 1 h s p . n. Montandon land, Fraser Island, Q., Northern Territory and Front femora not notice Front femora sinuate, . Noteworthy is the discovery oi' a ably sinuate or deeply deeply concave posteriorly striking new species of Anisops (Notonectidae) concave posteriorly ( Fig. 4 )

(Fig. 1 ) from Northern Queensland and the confirma-

tibiae with two I i out tibiae mostly pale tion of the discovery of Cercotmetus (Nepidae) Front clear yellowish bands yellow ( Fig. 4 > to the Australian fauna with a new sub- new (I ig. I) species of hrevipes Montandon from Northern Middle femora slightly Middle femora shortei Queensland and the Northern Territory. longer than median length than median length o\~ I wish to thank Dr A. S. Menke, United of pronotum pronotum States National Museum, Washington for pro- Mind femora reaching Hind femora not reaching viding a figure of the Holotypc of a little known posterior margin of posterior margin of 5th sternite 5th sternite species, Anisops malkini Brooks from Northern Male operculum Australia. Finally, I wish to thank Dr G. Gross, Male operculum not

( ( Fig. ) triangular Fig, 6 South Australian Museum, Adelaide for the triangular 3 loan of a series of Sigara (Tropocorixa) atts- tralis (Fieber) which enabled me to solve an Male genitalia (Figs. 2, 7 and 8) typical of extremely puzzling problem which is dealt with genus Cercotmetus. The bridge, basal plates in detail in these notes. and lateral arms are very long and lightly sclerotised. Lamina ventralis vestigial. Central Nepidae strut large and almost hyaline. Ejaculatory Vesica partially enclosed Ranatra dhninuta Montandon: Queensland, reservoir elongate. rod which is quite heavily sclerotised Fraser Island, Coomboo Lake, 511972, within a anteriorly becoming rather more membranous f. A. E. Bayly (I.A.E.B.) 2?, 5 immature. distally. Posterior diverticulum simple, rather F.I., Boomerang North, 10.L1972, I.A.E.B., sclerotised than the median phallotheca. immature specimens. F.I., Hidden Lake, more Paramere (Fig. 2) similar to nominate form. 8.1.1972, I.A.E.B., immature specimens. F.I., immature Specimens of hrevipes hrevipes from Viet-Nam Deep Lake, 10. i. 1972, I.A.E.B., different paramcrcs (Fig. 5) but specimens. have slightly do not differ in any other way from nominate Laccotrephes tristis Stal: Queensland, Fraser form. Figure 5 is drawn from a dry mounted Island, Coomboo Fake, 5.1.1972, I.A.E.B., figure is of a specimen I.A.E.B., immature specimen whereas 2 1 a. F.I., Wabby Lake, which has been cleared in KOH and passed specimen. F.I., Lake Bowarrady, 7. i. 1972, through glacial acetic acid, etc. I.A.E.B.. I 9.

17 18 I. LANSBURY

Figs. 1-3, 7 and 8 Cercotmetus brevipes australis In addition to the three adults listed, the paramere. operculum. sub&p. n. d: I, front leg. 2, 3, following immature specimens of brevipes 7, internal genitalia: hbp bridge and basal plates; cs central strut; ed ejaculatory duct; er ejaculatory australis have been examined: reservoir; labp lateral arms of the basal plates; lv Two immature: Northern Territory, 12'17"S- lamina ventralis; pd posterior diverticulum; v vesica; Cooper Creek, 11 km S. by W. of vr vesical rod. 8, detailed view of central strut and 133'20"E, associated structures. Figs. 4-6 Cercotmetus brevipes Nimbuwah Rock, 3.vi.l973, T. Weir, Depart- front leg. paramere. brevipes Montandon cf: 4, 5, ment of Northern Territory, Darwin. One 6, operculum. immature : North Queensland, Hann River, 80 km north of Laura, 26.x. 1969, B. Cantrell,

Holotype * , Australia, Northern Territory, Queensland University Collection. 12'16"S-133'13"E, Birraduk Creek, 16 km In a footnote Lansbury (1973) refers to an W. by SW. of Nimbuwah Rock, 4.vi.l973, immature Cercotmetus from Australia, Groote T. Weir in the collection of the Department of Eyland, 5.vi.l948, R. R. Miller as being either Northern Territory, Darwin. a new species or dissidens Montandon so far

Paratypes: 1

1 $ , Northern Territory, Berry Springs, 64 km very wide distribution: Sumatra, Java, Sarawak, south of Darwin, 28.x. 1970, T. Weir, Queens- India (Bengal), Thailand, Viet-Nam, Philip- land University Collection. pines and China (Fukien). Lansbury (1973) AUSTRALIAN WATER-BUG FAUNA J9

synonymised C. jormosanus Sonan from For- Jaractnear Lake, 5.ix.l971, -Hang, 23, 3$. mosa with brevipes. Tchem Lake, 20.iii.1971, -Hang, 23, 6$. In Lansbury (1973) brevipes australis does Streatham "Blythvate* Billabong, 24.iv.1971, not key correctly, the key should be amended J.K., U, 1$. Streatham "Blythvale" river as follows: behind house, 24.iv.1971, J.K., 2 3,29. Lake 2 (1) Not more than 42 mm long 2A Coleman, 19.vi.1971, B. Chessman, 33, 7$. Lake Struan, More than 47 mm long 3 26.vi.1971, J.K., 13, 1 $ . 2A (2) Middle femora clearly shorter than the median length of the pronotum, front Anisops planifacies sp. n.

femora sinuate . . . brevipes brevipes (Figs. 9-12) Montandon. Male 8 3 mm long, maximum width 2 5 mm, Middle femora longer than the median 9 8 9 mm long, maximum width 2-75 mm. length of the pronotum, front femora

Colour and structure 3 : Eyes dark brown. not noticeably sinuate . . . brevipes Pronotum, scutellum and most of the abdomen australias subsp. n. pale yellowish. Elytra hyaline. Posterior ter- gites and sternites black. Epimeron reddish Notonectidae brown. Anisops nasuta Fieber: Queensland, Fraser Viewed from above, the anterior margin of Island, Boomerang South, 9.L1972, I.A.E.B., the head is straight. Greatest width of head

1 9 , F.I., Basin Lake, I.A.E.B., 13,15$ 1 three-fourths pronotal humeral width and six immature. times the anterior width of the vertex. Synth- Anisops elstoni Brooks: Queensland, Fraser lipsis just over half the anterior width of the

Island, AB Lake, lO.i.1972, LA.E.B. 4 3 , 8 $ . vertex. Median head length two- thirds the Anisops gratus Hale: Victoria, Dam 25 km median pronotal length. Pronotal humeral width before Warrambine Creek, Hamilton road from twice the median length, lateral margins diverg-

Geelong, 23.iv.1971, J. Knowles (J.K.) 2 3 . ing and half the median length, posterior margin Anisops deanei Brooks: Victoria, Jaractnear broadly emarginate. Facial tubercle raised be-

Lake, 5.ix.l971, -Hang, 1 3 . Queensland, tween the lower margins of the eyes forming Creek on Esk road near Ipswich Junction, a flat platform (Fig. 11) not visible when

22.V.1971, J.K., 1 3. viewed from above. Labrum basally broader Anisops evansi Brooks: Victoria, Lake Struan, than long and rather hairy. Rostral prong large. 26.vi.1971, J.K., 8 3,7$. Not previously re- Stridulatory comb (Fig. 10) chaetotaxy of the corded from the mainland of Australia and male front leg (Fig. 9). thought to be a Tasmanian endemic. Female: Eyes black, posterior margin of the Anisops barrensis Brooks: Queensland, Creek pronotum and scutellum orange. Tergites black on Esk road near Ipswich Junction, 22.V.1971, with orange bands posteriorly. Underside en- tirely J.K., 1 3 . This specimen does not agree in black. Viewed from above the head is some important details with paratypes of more rounded than in the male. Greatest width barrensis. of head almost equalling pronotal humeral and five a half times the A nisops thienemanni Lundblad : New South width and anterior Wales, Lagoon next to Lake Victoria, 8.iv. width of the vertex. Median head length over 1971, J.K.; 83, 9$. Victoria, Dam -25 km half but less than two-thirds median pronotal before Warrambine Creek, Hamilton road from length. Geelong, 23.iv.1971, J.K., 2 3,2$. Little Lake Comparative notes: This species keys out to next to Dam -25 km before Warrambine Creek, couplet 1 6 (malkini Brooks and occipitalis Hamilton road from Geelong, 25.iv.1971, J.K., Breddin) in Lansbury (1969). It can be dis- 26. vi. tinguished from these two and all other Aus- 6 3, 2 $ . Dam near Lake Murdeduke, 1971, J.K., 4$. Lake Purrumbete, Camper- tralian species by the raised facial tubercle. down, 25.iv.1971, J.K., 73, 1$. Victoria, Brooks (1951) states that the frons of malkini 20 I. LANSBURY

Figs. 9-12 Anisops planifacies

sp. ii. <$: 9. front leg. 10, stridu- latory comb. 11, oblique view of rostrum and rostral prong. 12, side view of head and pro- notum. Fig. 13 Anisops malkini Brooks Holotype <$\ oblique view of rostrum and rostral prong.

are depressed and apically terminated by a inner surface of the front tarsi which arc lack- transverse ridge. Dr Menkc provided me with ing in the Holotypes of malkini and planifacies. a sketch of the rostral prong and associated Finally malkini from Darwin is 6 9 mm long area of the Holotype of malkini described from compared with 7*5 mm from , a single male from Darwin (Fig. 13). It does planifacies is much larger. not seem to be as Brooks described it, but docs Holotype 3 (T-4569) and allotype $ (T- closely resemble malkini Brooks sensu Lans- 4f>70), Australia, North Queensland, Hann bury (lW)) the description being based on a River, 112 km south of Cocn, 27.vi.1970,

single male from Old River, Western Australia. .1. C. le Souef in the National Museum of The chactotaxy o{ the male front legs arc all Victoria, Melbourne. rather similar except that the male from the Enithares woodwardi Lansbury: Queensland, Ord River has four prominent spines on the Fraser Island, Boomerang South, 9.i.l972, AUSTRALIAN WATER-BUG FAUNA :i

I.A.EB., 19, 1 immature. F.I., AB Lake,

10.U972, I.A.E.B., U, I 9. Creek on Esk road near Ipswich Junction, 22. v. 1971. J.k.,

1 j . Victoria, Little Lake next to Dam 25 km before Warrambine Creek. Hamilton road from Geelong, 25.iv.1971, J.K.. 2;, 39, Home Station Creek. Delatite, 25.vin.1971, H. B.

Hynes. 1 j .59. Streatham, "Blythvale" Billa- bong, 24.iv.1971, I.K., I;, I 9. Streatham, "Blythvale" river behind house. 24.iv.l071,

J.K., 1 & . Enithares hackeri Hungerford: Queensland. Creek on Esk road near Ipswich Junction,

22.V.1971, J.K., 4 ; .39. This species is now- known to occur in New Guinea (Lansbury. in press), 1 J . 2 9 have been studied from Madang District, Finisterre Mts., Micro 5,500'

St. 7, 30.x.- 15,xi. 1964, M. E. Bacchus (British Museum, Natural-History).

Corixidae

Agraptocorixa hirtifrons (Hale) : Victoria, Dam 25 km before Warrambine Creek, Hamilton road from Geelong, 23.iv.1971, J.K., 1 3 .

Lake Coragulac, Alvie, 25.iv.1971, J.K., 1 9.

Lake Linlithgow, 24.x. 107 I, B. Chessman, 2 9 .

Figs. 14-17 Sigara ( Tropocorixa) australis (\ ieber) Lake Muirhead, 24.x. 1971, B. Chessman, 1 9- 14- 17. "stri^il". , Adelaide: Id tergites 6-8,

Agraptocorixa parvipunctata (Hale) ; . Lagoon next to Lake Victoria. 2 -25 24.\. B. Chessman. 4 9 . Streatham, 8.iv.l971, J.K., "} . 4 9 . Victoria, Dam km 1971, before Warrambine Creek, Hamilton road from "Blythvale" Billabong. 24. iv. 1071, J.k., 19.

Tropocorixa) trurtcatipala (Hale) : New Geelong, 23.iv.l07I, J.K., I 9.1 Lttle Lake next Sigara i to Dam 25 km before Warrambine Creek. South Wales, Lagoon next to Lake Victoria, Hamilton road from Geelong, 25.iv.1971, J.K., 8.iv.l971, J.K., 1;. Queensland, Creek on

I, Chessman. Esk road near Ipswich Junction, 22. v. 1071, 1 J . Lake Muirhead. 24.x. 107 B. 2 9. J.K., 2 ;. (Hale) ) Sigara | Tropocorixa) sublaevifrom ; Agraptocorixa eurynome ( Kirkaldy : New South Wales, Lagoon next to Lake Victoria, New South Wales, I A^oon next to I ake Vic-

toria, S.i\.i07i, J.K- 1 ;. Victoria, Dam 25 8.iv. 1971, J.K., I 9. Victoria, Little Lake next before Warrambine Creek, Hamilton road to Dam 25 km before Warrambine Creek, km

. Little Hamilton road from Geelong, 25.iv.1971, J.K., from Geelong, 23.iv.1971, J.K., I

Lake, 25.iv.t071, J.K., 1 o* , 19. Streatham. small down. 25.iv.1971, J.K.. 1 S. Tchem

iv. , 69. Streatham, Dam at "Blythvale", 24. 107 1 J k.. U,l9. 20.viif.1971, -Hang, 6 g t "Blythvale" river behind house, "Blythvale" river behind house. 24. iv. 1071. Streatham,

2 ? . Streatham, I ake Coleman, 24.iv.1071. J.K., 119. "Blyth- .IK.. 2 ? , 49 and 8 immature. Billabong, 24. iv. 1071. J.K., 21 9. 10. vi. 1071, B. Chessman. 19. lake Clarke, vale" 5;, Muirhead, Streatham, "Blythvale" water-tank Nixon, 23.\. 197 I, B. Chessman, 1 $. Lake 22 I. LANSBURY

Figs. 1 8-24 Sigara hind femora : 1 8, australis B. Chessman, 1 & , 6 9 ; not typical, much paler (Fieber). 19, subUievijrons (Hale). 20, truncatipala than usual, (Hale). 21, mullaka Lansbury. 22, tasmaniae (Jac- black pronotal markings very nar- zewski). 23, tadeuszi (Lundblad). 24, neboissi row. Streatham, "Blythvale" river behind house, Lansbury. 24.iv.1971, J.K., 1 9 . Dam near Lake Murde- duke, 26. vi. 1971, J.K., iv. U, 29. Lake Muir- 25. 1971, J.K., 1 & . Lake Purrumbete, Cam- head, 24.x. 1 97 1 , B. Chessman, 1 5 9 . Lake perdown, 25.iv.1971, J.K., 2$. Lake Muir- £ , Terangpom, 25.iv.1971, J.K., 74, 69. Lake head, 24.X.1971, B. Chessman, 1 5, 1 9. Coragulac, Alvie, 25.iv.1971, J.K., 3 , Sigara (Tropocorixa) tasmaniae. (Jaczewski): <5 69. Lake Purrumbete, Camperdown, South West Tasmania, Lake Pedder, lO.iii. 25.iv.1971, J.K., 1 9. Lake Purdigulac, 17.V.1971, B. V. 1972, A. Neboiss, 3^,89 and 1 immature.

Timms, 4 . Lake Rosine, Tasmanian endemic, previous records, Tas. $ 24.x. 197 1, B. Chess-

man, 2 $ , 29. Gnarkeet National Park, 1,066 m (Type locality) and Creek near Foxhow, 1 6.iv. 1 97 , Shannon Lagoon. 1 B. Chessman, 1 $ , 1 9 . Lake Colac, Sigara (Tropocorixa) neboissi Lansbury: North 13.iv.-18.vi.1971, B. V. Timms, 10 S, 10 9. West Tasmania, Hellyer River Gorge, 9.ii.l971, It can be inferred from the existing data that A. Neboiss, australis is characteristic 4 9 . Tasmanian endemic, previous of lakes and rivers records, Shannon Lagoon; Hobart; Lake and appears to be fairly common in Victoria.

Tiberias and Ridgcway. This species is rather Lansbury (1970) figured the 8th tergite in- like truncatipala (Hale) which is widespread correctly, the three groups of hairs shown on in , Victoria, New South Wales this tergite were in fact groups which had and parts of Queensland. become detached from the distal margin of the Sigara (Tropocorixa) australis 7th (Fieber) : Vic- tergite during the preparation of the slide. toria, Lake Struan, 26.vi.1971, J.K., 13 £. The correct appearance of the 6th-8th tergites Lake Linlithgow, 24.V.1971, B. Chessman, are as shown in figures 14-16, the 'strigil' (Fig. 19c?, 3$. Lake Coleman, 19.vi.1971, B. 17). Specimens from Victoria, Lakes Muir- Chessman, Is, 5 9. Lake Clarke, 23.X.1971, head; Terangpom; Coragulac; Clarke; Dam )

AUSTRALIAN WATER-BUG FAUNA

near Lake Murdeduke; St man; Linlithgow; along Upper margin (big. 2 1

Coleman as well as material from South Aus- multaka 1 ansbury tralia, Adelaide, reed beds and Murray Bridge Distal pala pegs not significantly longer have been dissected to confirm the chactotaxy than remainder [Fig. 40). Pilose area of of the tergites, none were found which re- hind femora not reaching half way along sembled my 1970 BgUrC. An error has been Upper margin (Fig. 22) found in the first couplet of the 1970 key, tasmamae (Jaczewski) the second line of the first couplet should read 4(1) Frontal impression or fovea obsolete "Right clasper of male spine-like distally (tigs. [Figs, 45 and 4(>[ sublaevifrons (Hale)

l 54 and 67)" no * figk 97 and )S as printed. - Frontal impression or fovea clearly

The pilose areas of the hind femora o\' the defined [Figs. 58, 71 and 88| 5 australian Sigara are of some additional help 5 (4) At most 5*6 mm long, usually just over in separating some of the seven species although 5 mm tadeuszi (Lundblad) they are of no taxonomic value in distinguishing - At least 5 9 mm long females of truncatipala from sublacvifrons 6 (5) Distal pala margin concave, not pro- which are often found in the same habitat. duced along lower margin [Fig. 80]. Pilose area of hind femora reaching

An amended key is given which is based on about half way along upper margin Lansbury (1970) which includes references to (Fig. 20) truncatipala (Male) the 1970 figures, these are in square brackets Distal pala margin not concave, clearly to distinguish them from the figures included produced along lower margin [FigS. ( >7 in this paper. and 98]. Pilose area of hind femora not reaching half way along upper margin Revised key io the Australian Sigara (Fig. 24) neboissi lansbury

1 Right clasper of male not spine-like distally [Figs. 13, 28 and 41] 2 References - Right clasper of male spine-like distally Hk(x>ks, Ci. T., 1951. A revision of the genus Anisops (Notonectidae, Hemiptera). Kans. Univ. Sci. [Figs. 54 and 67] 4 Bull. 34(1): Mil 519.

2 (1) Pala elongate, 3x longer than broad I INSBUKY, 1., [969. 11k* genus AnisOpS in Australia nai. [Fig. 12]. Pilose area of hind femora ( Hemiptera-1 leteroptera, Notonectidae). J, Hist, 3: 431-458. not reaching half way along upper , 1970. Revision of the Australian Sigara margin (Fig. 18) australis (Ficbcr) (Hemiptera-Heteroptera, Corixidae). J. n&t. Hist. Pala shorter, never more than 2*75x 4: 39-54.

— , 1973. A review of the genus CcrcotmttUS longer than broad [Fig. 1 3 27 A in vol and Serville, 1843 ( 1 lemiptei a Heterop 3 (2) Distal pala pegs much longer than re- lera. Nepidae). Tijdschr. EM. 116(5): SI 106. in press: Notes on the genus I'niduircs mainder [Fig. 27]. Pilose area of hind Spinola ( Hemiptera Heteroptera, Notonectidae). femora reaching more than half way I'nl. mon. Mag.