Aculeate Wasps of Fiji " by FRANCIS X
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OCCASIONAL PAPERS OF BERNICE P. BISHOP MUSEUM HONOLULU, HAWAII Volume XVIn July 18, 1947 Number 21 Aculeate Wasps of Fiji " By FRANCIS X. WILLIAMS EXPERIMENT STATION, HAWAIIAN SUGAR PLANTERS' ASSOCIATION, HONOLULU INTRODUCTION In his Hymenoptera of Fiji, Dr. R. E. Turner (Ent. Soc. London, Trans., 334-346, 1919) lists 15 species of aculeate wasps. More recent studies relegate one of them to synonymy, Pison rechingeri Kohl having been made a synonym of Pison tahitense Saussure (Perkins and Cheesman, Ins. Samoa 5 (1): 26-27, 1928). In 1917, the Philip pine Campsomeris marginella (Klug) subspecies modesta (Smith) (= Seolia manilae Ashmead) was purposely introduced from Hawaii into Fiji by Robert Veitch to prey upon scarabaeid beetle grubs in the sugar-can,e fields, and has become established there (Veitch, Dept. Agric. Fiji, Agric. Circ. 5 (1): 66-67, 1924). In 1928, Tachysphex vitiensis was described by Williams (Haw. Sugar Plant. Assoc. Expt. Sta., Ent. Bull. 19: 166-168, 1928). Haupt (Zeitsch. f. Naturwis., Halle 9: 134-135, 1937) reports Chrysocurgus nitidus (Fabricius) (= Priocnemis Wakefieldi Kirby) from Fiji (New Zealand and Queensland). In 1940, Sceliphron caementarium was first reported from Fiji by Lever (Dept. Agric. Fiji, Agric. Jour. 11 (2): 41, June 1940). The present collections, consisting of specimens taken by C. E. Pemberton in 1920, and those in the B. P. Bishop Museum, by various collectors, bring the number of species to 25, as follows: SCOLIIDAE 1. Campsomeris ovalauensis 2. Campsomeris marginella (KIug) (Saussure) subspecies modesta (Smith) VESPIDAE 3. Eumenes ovalauensis Saussure 6. Odynerus (Rygchium) rufipes 4. Pachymenes bicinctus (Fabricius) Saussure 5. Pachymenes mediocinctus 7. Alastor graeffei Saussure (Turner) 8. Polistes olivaceus (Degeer) 318 Bernice P. Bishop Museun1r-Occasional Papers XVIII, 21 POMPILIDAE 9. Cyphononyx vitiensis Turner 12. Dendropompilus vitiensis, new 10. Chrysocurgus nitidus (Fabricius) genus and species 11. Pompilu8 elatus Smith 13. Nesopompilusvitiensis, new genus and species SPHECIDAE 14. Sceliphron caementarium (Drury) TRYPOXYLONIDAE 15. Pison ignavum Turner 17. Pison hospes Smith 16. Pison iridipenne Smith 18•.PiSOD tahitense Saussure LARRIDAE 19. Notogonidea liriformis, new spe 21. Notogonidea manilae (Ashmead) cies 22. Tachysphex vitiensis Williams 20. Notogonidea subtessellata (Smith) CRABRONIDAE 23. Crabro veitchi Turner 24. Rhopalum oceanicum (Schulz) STIZIDAE 25. Stizus inermis Handlirsch Distribution of Aculeate Wasps in Tropical South Pacific and Hawaii to April 1947 (See map, figure I) SOU'l'a- NEW FIJI SAMOA F,AS'l'ERN HAWAIIAN CALEDONIA POLYNESIA ISLANDS Mutillidae ._u....n.. 1 Thynnidae ........nn 3 Scoliidae ................ 1 2(1)* (2) Vespidae ................ 6 6 3 7 120 Pompilidae ............ 12 5 1 1 Ampulicidae .·.Hh. I (2) Sphecidae __ n ...__ ..... 3 1 1 1 4 TrypoxylOliidae .... 5 4 5 6 5 Larridae ....._ ...__ ..u· 4 4 3 1 6(2) Astatidae _nn......... 1 Mimesidae ..--- ....... 1 10 Pemphredonidae .. 1 Crabronidae .......... 2 19 Oxybelidae ............ Stizidae .................. * () == purposely introduced. Williams-Aculeate Wasps of Fiji. COMMENTS MUTILLIDAE: Females wingless. Parasitic on aculeate Hymenop tera, and so forth. Species endemic. THYNNIDAE: Females wingless, carried about by the male. They appear generally parasitic on the grubs of scarabaeid beetles which become few in species and disappear the more distant the island is from a large land mass. Endemic. .. ~ '\ ~' .. HtW ;~ HE8,RIDtS ": ~tw·~.· CALEDON(A- ~LordN~:~k .:i<.rrnadee NtW):PZ£ALAND d ,ChathAfn 1- ·1.... '_. "_. 1_· too' 1-· I.... I.~ FIGURE I.-Map showing tropical Pacific islands. SCOLIIDAE: Strong though often rather heavy flyers. Parasitizing scarabaeid beetle grubs. VI~SPIDAE: The social wasps, represented by the genera Polistes, Ropalidia (Icaria) , and Vespa (V. occidcntalis Cresson, recently from the west coast of America), comprise a'few species that prey upon caterpillars and other insects. The majority have been accidentally introduced by man, although one or two have become differentiated into geographical races or subspecies. They are chiefly oriental or Australian, one Polistes and the Vespa being from the west coast of America. The solitary species, or Eumeninae, prey upon caterpillars and may nest on or in buildings, furniture, hollow twigs, in old beetle borings, nail holes, rock cavities, in the ground, and occasionally con struct free cells. A good proportion (including two species of Eumenes) are endemic in the Pacific and, with the exception of one very recent 320 Bernice P. Bishop Musemn-Occasional Papers XVIII, 21 immigrant, the numerous Hawaiian odyneri are found nowhere else in the world. POMPILlDAE : Wasps preying upon spiders and Resting in the ground, in various hollows, on trees, and so forth. The absence or rarity of the largest types of spiders (Aviculariidae) on the islands under consideration precludes the presence of the larger Pompilidae there. Chiefly endemic or natural immigrants. AMPULIClDAE: Preying upon cockroaches. One more or less don~i. ciliary species from Africa and Asia has reached New Caledonia, prob· ably in shipping. SPHECIDAE: Large wasps; the mud-daubers Sceliphron and ChaZy. bion store spiders in their cells; ChZorion and Isodontia prey upon Orthoptera. Not endemic species. TRYPOXYLONIDAE: Represented chiefly by the genus Pison (two species of oriental Trypoxylon in Hawaii). They are rather small and commonly domiciliary wasps that prey upon spiders and are typically Pacific island insects, rather few in species and generally not endemic. From the Australian and oriental regions. LARRIDAE: Strong flyers, usually nesting in the ground and prey ing upon crickets, grasshoppers, more rarely upon small cockroaches. N iteZa probably preys upon Psocidae. Some endemic. ASTATIDAE: Bug hunters. One very recent arrival from the west coast of America. MrMEsIDAE: Prey upon homopterous bugs and nest mostly in the ground. Endemic. PEMPHREDONIDAE: Prey upon homopterous bugs. Nest in wood, and so forth. One very recent arrival to the Hawaiian Islands. CRABRONIDAE: Preying chiefly upon flies. Nest in wood or in the ground. Endemic. OXYBELIDAE: Preying chiefly upon flies; some upon small beetles. Nest in ground. Endemic. SnzIDAE: Nest in the ground; probably store homopterous bugs. Endemic. The table of distribution presents a very imperfect picture. It shows a mixture of endemic forms, apparently natural immigrants of long standing that have not, or have scarcely been modified, and immigrants through modern commerce, arriving almost literally from day to day. This table does show, however, how certain groups of endemic wasps extend only so far into the Pacific, thinning out and some disappearing, Williams-Aculeate Wasps of Fiji 321 from west to east, as they become more distant from the Indo-Austral ian land masses (MutiIIidae, Thynnidae, Pompilidae, and Larridae). Hawaii as a group apart does not fit into this picture. The purposely introduced species, indicated in the table by paren theses, are: Campsomeris marginella (Klug), subspecies modesta (Smith), introduced from the Philippine Islands into Hawaii and thence into Fiji; Tiphia segregata Crawford, from the Philippines into Hawaii; lJvlichurus stantoni (Ashmead), from the Philippines into Hawaii; Ampulex c011fpressa (Fabricius), from New Caledonia into Hawaii; Larra luzonensis Rohwer, from the Philippines into Hawaii; and N otogon'idea subtessellata (Smith), from the Philippines into Hawaii. SCOLIIDAE Campsomeris ovalauensis (Saussure). Discolia Ovalauensis Saussure, Ent. Zeitung 30: 62, 1869 (male and female). Scolia 07JQlauensis, Turner, Ent. Soc. London, Trans., 340, 1919. Campsomeris ovalauensis, Betrem, Treubia 9, Supp!. : 91-92, 1928. Fiji, one male. Viti Levu: Singatoka, Aug. 12, 1913, one female; Rewa, 1920, one male, C. K Pemberton; Nandarivatu, October 1937, two females and three males, J. M. Valentine; Nandarivatu, Sept. 1, 1938, one male, and road west of Nandarivatu, alt. 2,800 ft., Sept. 11, 1938, one male, beating on shrubs, E. C. Zimmerman. Kandavu: Yawi, April 28, 1941, one male, N. L. H. Krauss. This rather glabrous black and orange wasp measures up to about 20 mm. long, and is quite different in appearance from C. novocale donica Turner of New Caledonia. Campsomeris marginella (Klug), subsp. Modesta (Smith). Scolia marginella Klug, Beitr. z. Naturk. 2: 214, n. 44, 1810 (male) . Scolia modesta Smith, Cat. Hymenopt. Ins. Brit. Mus. 3: 91-92, 1855. Scalia manilae Ashmead, New York Ent. Soc., Jour. 12: 8-9,1904 (female). Scolia (Scolia) manilae, Rohwer, Philippine Jour. Science 19:. 81-82, 1921. Campsomeris marginella (KIug) , subsp.modesta (Smith), Betrem, Treubia 9, Suppl.: 135-137, 1928. 322 Bernice P. Bishop Musettnt-OccasionalPapers XVIII, 21 This is one of the smaller species of Calnpsomeris, measuring up to about 12 nun. It was introduced from the Philippine Islands into the Hawaiian Islands by F. Muir in 1916, as an enemy of the larva of Anomala orientalis Waterhouse, a pest of sugar cane. It is also an effective enemy of Adoretus sinictts Burmeister, another immigrant scarabaeid beetle (Muir, F., Ent. Soc. Am., Ann. 10: 207-210, 1917). It was introduced from Hawaii into Fiji by R. Veitch in 1917 and has become established there (Dept. Agric., Fiji, Agric. Circ. 5 (1) : 66-67, 1924) . VESPIDAE Eumenes ovalauensis Saussure. Eumenes Ovalauensis Saussure,' Stett. Ent. Zeitung, 30: 53, 1869 (female). "Habite: Les iles Viti. Ovalau (Griiffe)." Belonogaster