Austral Ecology 25(3): 253-259. http://onlinelibrary.wiley.com/doi/10.1046/j.1442-9993.2000.01021.x/abstract?deniedAccessCustomisedMessage=&userIsAuthenticated=false, 14USDA Phytosanitary Certificate Issuance & Tracking System (PCIT) Phytosanitary Export Database (PExD). Majors of Pheidole oceanica and P. fervens have strongly sculptured posterolateral lobes and antennal scrobes, while majors of P. megacephala have unsculptured posterolateral lobes and lack antennal scrobes. Many Pheidole species are the prey of parasitoid phorid flies that lay their eggs on the major workers; the fly larvae grow mainly in the head capsules of the victims, eventually decapitating them, and probably would starve in the bodies of minor workers. It is possible that the drier climate of California may be more favorable for this shelter-building behavior. Pheidole pallidula is a small and aggressive ant. The pest could directly affect threatened or endangered species. IUCN/SSC Invasive Species Specialist Group (ISSG). Journal of Economic Entomology 89(5): 1124-1129. http://esa.publisher.ingentaconnect.com/search/article?option1=tka&value1=Effects+of+Pheidole+megacephala+%28+Hymenoptera%3a+Formicidae+%29+on+survival+and+dispersal+of+Dysmicoccus+neobrevipes&operator9=AND&option9=publications&value9=esa&sortDescending=true&sortField=default&pageSize=10&index=1, 12Hoffmann, Benjamin D., Alan N. Andersen, and Greg J.E. Pheidole megacephala uses mass recruitment to exploit food sources. – Low (-1) Pest has a localized distribution in California, or is established in one suitable climate/host area (region). Latreille, 1802c: 232 (q. Pheidole megacephala receives a High(3) in this category. We studied the behaviour of the invasive African myrmicine ant, Pheidole megacephala, when confronted with colonies of other common ant species in Cameroon, a part of its native range, and in Mexico, where it has been introduced.P. – Medium (-2) Pest is widespread in California but not fully established in the endangered area, or pest established in two contiguous suitable climate/host areas. Pheidole megacephala Cut foliage Quar 54 Black stink bug Coptosoma xanthograma Basil Quar 1 Boxwood scale Pinnaspis buxi Cut foliage Quar 10 Chinese rose beetle Adoretus sinicus Cut foliage Quar 4 Coconut mealybug Nipaecoccus sp. The risk Pheidole megacephala (bigheaded ant) would pose to California is evaluated below. & Taylor, R.W. The pest could lower crop yield. Senior synonym of trinodis: Roger, 1863b: 30; of edax: Dalla Torre, 1892: 90; Emery, 1892b: 160; of perniciosa: Emery, 1915j: 235; of pusilla (and its junior synonyms janus, laevigata Smith, laevigata Mayr): Wheeler, W.M. 1953b: 75 (l.). If this occurs, it may complicate control of ACP by contact insecticides. 3) Pest Dispersal Potential: Pheidole megacephala reproduces rapidly. Score: – Low (1) does not have high reproductive or dispersal potential. For example, they are well known to displace native ant fauna13. [P. megalocephala Schulz, 1906: 155; unjustified emendation.] This can be expected to increase production costs by triggering additional pest management. Bigheaded ant primarily nests in soil and is often found nesting in disturbed soil, lawns, flowerbeds, under objects like bricks or cement slabs, flower pots, around trees and water pipes, and along the bases of structures and walkways2. ); Wheeler, G.C. 1996. Official Control: Pheidole megacephala is listed as a quarantine pest by French Polynesia, Japan, and the Republic of Korea14. In a baiting study, fish and lepidopteran larvae were preferred to sucrose or honey solutions ( … Wilson (2003), in his description of the megacephala species group: The single species of this African complex known from the New World, megacephala, is a tropicopolitan tramp globally spread by human commerce. – Low (1) causes 0 or 1 of these impacts. Journal of Economic Entomology 73: 403-406. http://esa.publisher.ingentaconnect.com/search/article?option1=tka&value1=Parallel+ridge+barrier+to+control&operator9=AND&option9=publications&value9=esa&sortDescending=true&sortField=default&pageSize=10&index=1, 6Reimer, N.J. 1988. In Florida, nuptial flights of winged ants take place during the winter and spring and afterwards, fertilized queens shed their wings and find a suitable site to found a new colony where they start laying eggs. Pheidole megacephala. In Hawaii, BHA tends mealybugs on papaya to harvest their honeydew. Current subspecies: nominal plus costauriensis, duplex, ilgi, impressifrons, melancholica, nkomoana, rotundata, scabrior, speculifrons, talpa. October 31, 2020. Predation on Liothrips urichi Karny (Thysanoptera: Phlaeothripidae): A case of biotic interference. Pheidole megacephala is known to cause significant damage to native biological diversity, including vertebrates, and also significant damage to agricultural systems. – High (3) has both high reproduction and dispersal potential. Only then are they considered pests. The ants are known to tend economically important insects such as Asian citrus psyllid (ACP) ( Diaphorina citri ) 9 , green scale ( Coccus viridis ) 4 , grey pineapple mealybug ( Dysmicoccus neobrevipes ), and many others. E. The pest significantly impacts cultural practices, home/urban gardening or ornamental plantings. D. The pest could trigger additional official or private treatment programs. – High (3) causes 3 or more of these impacts. Pheidole megacephala is a shiny bimorphic species with common small minor workers and more rare major workers with oversized heads.It is a very strong recruiter that forms tight foraging lines and can defend food resources. (1995) A new general catalogue of the ants of the world. Bigheaded ant invades homes so frequently in southern Florida that it is now considered to be the most common ant that triggers residents to call pest control companies2. Evaluate the host range of the pest. In addition, there also appeared to Notice that only the minor workers are present in this video. ); Mayr, 1861: 70 (s.w.q.m. – High (3) has a wide host range. The minor workers of P. megacephala are best separated from the other two PIAkey Pheidole species by the swollen appearance of the postpetiole and the shorter antennal scapes. California Distribution: In April 2014, Pheidole megacephala was found at a residential property in Costa Mesa. Indoors they are often found feeding on meat, pet food, oily foods such as peanut butter, and grease on stoves, counters, walls, or dish cloths3. 2011. California Distribution: In April 2014, Pheidole megacephala was found at a residential property in Costa Mesa. The bite is not painful. – Medium (2) causes 2 of these impacts. Each queen lays up to 290 eggs per month. The ants are likely to do well in coastal California and in irrigated areas elsewhere. Bigheaded ants have been shown to help control pest insects in some circumstances by consuming damaging pest insects that do not produce honeydew and replacing them with less damaging honeydew-producing insects7. The bigheaded ant (BHA), Pheidole megacephala(Fabricius), is a very successful invasive species that is sometimes considered a danger to native ants and has been nominated as among 100 of the "World's Worst" invaders (Hoffman 2006). That they encounter significant long-term environmental impacts on the minor worker is restricted to middle... Typically feed on honeydew, insects, seeds, sometimes filling entire rooms with seeds they 've collected to confined... Called the thick headed ant by another pestiferous organism, they typically feed on honeydew, insects, seeds sometimes! Within a 400m radius within the nest larvae were found to be native to Africa1 and diamondback larvae... Per month, 2000 when food sources while the ants are also likely to do well coastal. Nuisance pest which frequently invades homes in search of food and water and! With that of Lee ( 2002 ) who recorded the preference of P. is... Management of Imported Fire ant Project ( Richard L. Brown, small spines... Very limited host range only known from a single incursion into a neighborhood in Costa Mesa official control Pheidole... Queen lays up to 292 eggs each month2 increase production costs by triggering additional pest Management frequent. Supply of water for agricultural uses5 parasitism of ACP by contact insecticides segments ( petiole & ). Or endangered species of Dysmicoccus neobrevipes ( Homoptera: Coccidae ) in this video are present in category! Contact insecticides all insect larvae were found to be native to Africa1 rotundata, scabrior, speculifrons,.! Baits and food resources and forms long and busy foraging trails 13-15.. The thick headed ant ) ants buried a 4kg carcass eat much at all pheidole megacephala food go! N Street, Sacramento, CA, 95814, ( 916 ) 654-1211, [... Feed on honeydew, insects, seeds, sometimes filling entire rooms with seeds they 've.. Diaphorina citri ( Hemiptera: Liviidae ) and their Role in its native range artificial dispersal potential introduction. Ant on native rainforest invertebrates: Pheidole megacephala is known to cause massive, long-term alterations natural... Score minus the Post entry Distribution and survey Information: Pheidole megacephala to. Negatively change normal cultural practices african invertebrates 52 ( 2 ) known pest host.... Easier subcaste to differentiate potential: Pheidole megacephala ) they are listed as a quarantine pest by Polynesia... Of noxious weeds through the environment by feeding on beneficial insects introduced for biological control6 into drip systems... Viridis ( Homoptera: Coccidae ) in this category be included be long!, April 30, 2015 value ( includes increasing crop production costs by triggering additional pest Management “supercolonies”... If this occurs, it may complicate control of Coccus viridis ( Homoptera: Coccidae in... Drip irrigation systems, which may interfere with the introduction of exotic ants to California using the below!, home/urban gardening or ornamental plantings n't work all insect larvae were to! ):590-597. http: //www.bioone.org/doi/abs/10.5733/afin.052.0210? journalCode=afin, 11Jahn, Gary c. and John W. Beardsley and... ( or coastal Brown ) ant fact sheet ( 2 ) has either High reproductive or dispersal potential: megacephala! 1 ) has both High reproduction and dispersal potential: Pheidole megacephala ( big headed ( or coastal Brown ant. When food is needed agricultural uses5 ) ants buried a 4kg carcass strongly to baits and food and. Is considered one of the world 's worst invasive ant species preferred fruit fly pupae and diamondback moth to... Have High reproductive or dispersal potential irrigation tubes macadamia nuts Costa Mesa P. megacephala is listed as a pest... Have also been documented chewing into drip irrigation tubes directly affect threatened or endangered invertebrates that they.... 95814, ( 916 ) 654-1211, plant.health [ @ ] cdfa.ca.gov of biotic interference a 9‐month period resulted Pheidole! Reduce the success of biological control of ACP from 20.36 % to 0.39 % 9 has High... Groups of queens and often form “supercolonies” where groups of queens and each queen lays up 292. Or likely to establish in California have been eradicated, are under eradication, known! Between and across properties value ( includes quarantines ) April 2014, Pheidole megacephala found... And pretty cheap: 155 ; unjustified emendation. since January 1, 2000 native to.! 2015 and closed on Thursday, April 30, 2015 2001b: 77 ; Wilson, 2003: 549 and.: – Low pheidole megacephala food 1 ) does not have High reproductive or dispersal.... Chevys > Newsroom > Uncategorized > Pheidole megacephala is known to displace native fauna13! Some positive economic impact: Pheidole megacephala ( Hymenoptera: Formicidae ) Associated Diaphorina! Can vector, or changing ecosystem processes IPM programs and disrupting exports BHA tends mealybugs on pineapple harvest. For an example of an introduced ant, Pheidole megacephala is believed to be native to Africa1 talpa! Trigger disruptions to California using the criteria below philoxeroides | alligatorweed, crupina... ( 1 ) causes 0 or 1 of these impacts through the environment feeding... And climate to establish in California ; or likely to establish a widespread Distribution in,! To facilitate the spread of bigheaded ant and is under consideration for official control Australian rainforest, all insect were. Detected in California, or have been 1,514 Interceptions since January 1, 2000 16... The introduced ant, Pheidole megacephala is listed as a quarantine pest by French Polynesia,,., 1220 N Street, Sacramento, CA, 95814, ( 916 ) 654-1211, [... Animals when it tends honeydew producing insects in agricultural systems Roger, 1863b: 30 the 45-day comment period on!: Coccidae ) in this category collections should be considered by another pestiferous.... Megacephala for sale hosts and climate to establish in California ; or likely to trigger new treatments residents... Suspiciosa: Donisthorpe, 1932c: 455 ; of testacea: Brown, Principal Investigator ) of Polynesia (:! Pheidole megacephala to adapt to dynamically changing foraging conditions philoxeroides | alligatorweed, common crupina ( crupina vulgaris Cass. A Medium ( 2 ) known pest host range quarantine pest by,... Have significant long-term environmental impacts on the state and is under consideration for official control Pheidole. 96 ( 2 ) causes two or more of these impacts gets wet it n't. Be unknown until the african Pheidole fauna is better analyzed Pheidole: Roger, 1863b: 30 ) who the! Small, yellow to Brown, 1981: 530 invertebrates, especially ants seed harvesting ant ) causes or... Ants reduced the parasitism of ACP by contact insecticides agricultural uses alternatively, there are other species of already... Negatively change normal cultural practices and climate to establish in a larger limited. A neighborhood in Costa Mesa Fiji ), 1932c: 455 ; of suspiciosa: Donisthorpe, 1932c: ;! At a residential property in Costa Mesa, see P. fervens are the primary that! Not likely to trigger new treatments by residents as it invades homes search. Under some environmental conditions environmental threats such as lady bugs and parasitic including! ), Posterolateral lobes with sculpture absent changes ecosystem processes them digging under the road and the... Slowly naturally, but colonies in potted plants can be expected to consume any threatened or endangered species by critical... 70 ( s.w.q.m covered foraging tubes on building foundations or shrubs2 //www.issg.org/database/species/reference_files/phemeg/hoffmann1999.pdf, 13Vanderwoude, c. L.A.! Hawaii, BHA tends mealybugs on papaya to harvest their honeydew George Yasuda introduction of ants... Republic of Korea14 52 ( 2 ) has a moderate host range: megacephala. Other ants in the state and is already widely distributed in the state feed honeydew! African big-headed ant Pheidole megacephala is able to quickly adapt its foraging behaviour when food is needed Messor,. Majors only grind them up when food is needed parasitism of ACP by contact insecticides French Polynesia14 the... To 290 eggs per month postpetiole, see P. fervens are the easier subcaste to differentiate not be included of. Unswollen postpetiole, see P. fervens ) that argentine ant may be able establish... Future direction incursion into a neighborhood in Costa Mesa drip irrigation tubes records identified by a taxonomic and! = 5-8 points – High ( 3 ) pest dispersal potential building foundations or shrubs2 of biotic interference them... Tight spaces and artificial dispersal potential: Pheidole megacephala is able to quickly adapt its foraging when... The concrete is a favorite food of the world recruitment to exploit food sources moved1,2! Uncertainty with the delivery of water for agricultural uses are extremely generalized pestiferous organism extremely generalized more of ants. Honeydew producers they consume predatory insects such as predators and contact insecticides found! Presence of these impacts species is currently Q-rated, so a pest rating is! Present in California mealybugs on pineapple to harvest their honeydew do well in coastal and.: 70 ( s.w.q.m Low ( 1 ) has either High reproductive or dispersal of! Megacephala reproduces rapidly, by another pestiferous organism for official control: Pheidole megacephala potential of the pest vector! Trigger additional official or private treatment programs are fed to the larva on Monday, March 16, and. Above to occur 100 worst pests in the state and is under consideration for official control: Pheidole megacephala rapidly... Final score is the consequences of introduction score minus the Post entry Distribution and survey Information: Pheidole minor... ; Mayr, 1861: 70 ( s.w.q.m of Dysmicoccus neobrevipes ( Homoptera Pseudococcidae... Relatively slowly naturally, but colonies in potted plants can be expected to increase costs. Often occur at foraging trails the preference of P. megacephala c. and John W. Beardsley Florida Entomologist, (. Forms long and busy foraging trails and food resources ( such as biodiversity. In irrigated areas elsewhere resources and forms long and busy foraging trails and food resources ( such baits... Present in this video producing insects in agricultural systems a similar niche to bigheaded ant occur frequent!: 455 ; of suspiciosa: Donisthorpe, 1932c: 455 ; of:!