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Species: Adelomyrmex silvestrii

Name Status: Valid Name

Taxonomic Hierarchy:

Subfamily: Myrmicinae Genus: Adelomyrmex

Taxonomic History (provided by Barry Bolton, 2013)

Apsychomyrmex silvestrii Menozzi, 1931b PDF: 270, fig.6 (w.) COSTA RICA. AntCat AntWiki

Taxonomic history

Combination in Adelomyrmex: Kempf, 1972b PDF: 18.

Distribution:

Mexico to Costa Rica (type locality) (Fernandez 2003). Costa Rica: widespread in wet to moist forests throughout country, from lowland rainforests of La Selva and Corcovado to montane cloudforest of Monteverde.

Biology:

Natural History:

Inhabits forest floor litter. Known from Winkler and Berlese samples.

References:

Fern‡ndez C., F. 2003. Revision of the myrmicine ants of the Adelomyrmex genus-group (Hymenoptera: Formicidae). Zootaxa 361: 1Ð52.

Menozzi, C. 1931. Contribuzione alla conoscenza del "microgenton" di Costa Rica. III. Hymenoptera - Formicidae. Boll. Lab. Zool. Gen. Agrar. R. Sc. Super. Agric. 25:259-274.

Taxon Page Author History

Taxonomic Treatment (provided by Plazi)

Fernández, F., 2003:
Apsychomyrmex silvestrii Menozzi , 1931, 270 (w); Borgmeier, 1937:210; Smith, 1947:409. [Holotype not seen, presumably in Deutsches Entomologisches Institut].
Adelomyrmex silvestrii (Menozzi) : Kempf, 1972:18 ( New combination ); Bolton, 1995:58.
Worker measurements (n=8). HL 0.56-0.57 HW 0.52 - 0.54 SL 0.36-0.38 EL 0.05 - 0.06 WL 0.50-0.55 GL 0.74-0.77 TL 2.30-2.35 CI 94 SI 71-72.
Worker diagnosis: Sides of head evenly convex. Mandibles with 5 teeth decreasing in size from the apical teeth. Basal margin of the mandible with the tooth feebly developed. Dorsum of clypeal plate with two curved ridges very closed, prolongued into frontal carinae. Eyes small, with less than 10 facets, most with 5-6 facets.. Hypostomal tooth small but clearly visible in frontal oblique view. Promesonotum slightly convex to flat, with strong transversal fringe on anterior pronotal margin. Metanotal groove weak. Propodeum sloping with two spines long, stout, directed backwards and nearly horizontal. Petiole stout in profile, with feebly concave posterior side, ventral face convex with several transverse rugae, appearing as serrations in profile. Postpetiole high, campaniform with a ventral transverse ridge toothlike as seen in profile. In dorsal view and lateral view, postpetiole extending posteriorly over basal gaster, as a blunt point. Gaster with emarginate base and humeral angles. Dorsal surface of head, pronotum and mesonotum with coarse, longitudinal rugulae. Transverse rugae between propodeal spines and sides of petiole and postpetiole. Declivity face of propodeum from smooth to covered with transverse rugae. Mandibles, clypeal plate, legs, petiole, postpetiole and gaster shining. Meso and hind tibia with some long hairs. Hairs yellowish, long and sparse (most hairs about 0125 mm long, as long as basal width of apical flagelomere), more short and apressed on antennae and legs. Body black to dark brown or dark reddish, antennae and legs more ligther, brown to yellowish.
Queen: Not measured.
Male: Unknown.
Material examined: MEXICO : 3 w, Chiapas , 12.5 km NWOcosingo, 1400 m , 16.ix.1992 , R.S. AndersonNo. 92-106 ( INBio , IAvH ) ; 2 w., Veracruz , Fortin Canyon, Meziac River , 5.viii. 69 , S. & J. Peck ( BMNH ) ; 1 w, Veracruz , Pueblo Nuevo, near Tetzonapa , 17.viii. 53 , E.O. WilsonNo. 13F ( MZSP ) ; 1 q, Puebla , Tezintlán , Pue , 18.iv. 46 , F. BonnetNo. 1350 ( USNM ) ; 1 w, San Luis de Potosí , El Sarto , S. PeckNo. 11 ( MZSP ) ; BELIZE : 3 w, Toledo , 11.iii. 95 , Lyal & Mullis ( BMNH ) ; 2 w, Millionario , 9.iii. 95 , Lyal & Mullis ( BMNH ) ; 1 w, Las Cuevas , 12.viii. 95 , J. Beard ( BMNH ) ; 1 w., Maya Mountains , 7.ix. 97 , C. Lyal ( BMNH ) ; GUATEMALA : 1 w., in orchid from Guatemala , shake out , 9.xi. 45 , R.W. Pratts , ( port San Francisco ) No. 19943 ( USNM ) ; COSTA RICA : 1 w, Alajuela , 14 km SVolcán Arenal , 10°20’N84°43’W , 1000 m , 29.iv.1988 , J. LonginoNo. 2037-s ( INBio ) ; 13 w, Alajuela , Rio Peñas Blancas , 10°19’N84°43’W , 800 m , 26- 28.iv.1987 , J. LonginoNo. 11579-s ( INBio ) ; 1 w, Cartago , 4 km ETurrialba , 9°54’N83°39’W , 550 m , J. LonginoNo. 1644-s ( INBio ) ; 1 w, Heredia , Don Arturo, Santo Domingo de Heredia , 21.viii.1990 , I. PerfectoNo. 105 ( LACM ) ; 4 w, Heredia , 17 km SPuerto Viejo , 10°18’N84°02’W , 550 m , 12.ix.1985 , J. LonginoNo. 1088-s ( INBio ) ; 2 w, Heredia , Est. Biol. La Selva , 10°26’N84°01’W , 50-150 m , v.1983 , OET ( INBio ) ; 1 w, Heredia , Est. Biol. La Selva , 10°26’N84°01’W , 50-150 m , 4.ii.1974 , Talbot & VanDevender ( LACM ) ; 1 w, Heredia , 18 km NVolcán Barba , 10°17N84°05’W , 800 m , 4.vii.1986 , J. LonginoNo. 1383-s ( INBio ) ; 1 w, Guanacaste , 8 km SSanta Cecilia , 10°59’N85°26’W , 650 m , J. LonginoNo. 2529-s ( INBio ) ; 1 w., Guanacaste , Rincón de la Vieja , 20.x. 96 , F. Fernández leg., ( ICN ) ; 2 w, Limón , Res. Biol. Hitoy-Cerere , 9°40’N83°02’W , 200 m , 29.viii.1985 , J. LonginoNo. 942-s ( INBio ) ; 2 w, Puntarenas , Monteverde , 10°18’N84°48’W , 1500 m , 16.iv.1988 , J. LonginoNo. 1998-s ( INBio ) ; 3 w, 19 km SCiudad Neily , 8°29’N82°58’W , 20 m , 26.iii.1990 , J. LonginoNo. 2658-s ( INBio ) ; 3 w, Puntarenas , Par. Nac. Corcovado , 8°29’N83°36’W , 100 m , 17.xii.1990 , J. LonginoNo. 12768-s ( INBio ) ; 3 w, Puntarenas , Res. Biol. Carara , 9°47’N84°36’W , 500 m , 25- 26.vii.1985 , J. LonginoNo. 606-s ( INBio ) ; 1 q., province unknown , Costa Rica , intercepted in orchid in Honolulú , 28.ix. 56 ( USNM ) .
Comments. Distinguished from other species of the genus by the shape of postpetiole and anterior emargination of the gaster.

Specimen Data Summary

Found most commonly in these habitats: 186 times found in cloud forest, 121 times found in mature wet forest, 85 times found in ridgetop cloud forest, 88 times found in tropical rainforest, 86 times found in tropical moist forest, 70 times found in mesophil forest, 47 times found in 2º lowland tropical rainforest, 40 times found in tropical wet forest, 33 times found in lowland wet forest, 32 times found in mesophyll forest, ...

Collected most commonly using these methods or in the following microhabitats: 706 times MiniWinkler, 149 times MaxiWinkler, 48 times Winkler, 29 times Berlese, 6 times Night MiniWinkler, 2 times Berlese/Winkler, 3 times Baiting, 3 times Mini Winkler, 1 times fogging, 1 times Search

Elevations: collected from 20 - 2190 meters, 782 meters average