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Costa Rica (Atlantic slope to 800m, mid-elevation southern Pacific slope).
tanyscapa inhabits mature wet forest. Nests are in the soil. Foragers come to baits on the ground, and are also observed foraging on low vegetation.
This species is very similar to P. longiscapa Forel 1901 from South America.
Pheidole tanyscapaHNS new species
Types Mus. Comp. Zool. Harvard.
Etymology Gr tanyscapaHNS, with stretched-out stem, alluding to the elongated antennal scape.
diagnosis A member of the diligensHNS group, close to longiscapaHNS and rochaiHNS, and distinguished by the following set of traits. Major: antennal scape exceeding the occiput by 2X the scape maximum width; propodeal spines half as long as the propodeal basal face anterior to them; anterior margin of propodeum rugulose; carinulae absent from genae.
Minor: scapes exceed occipital corner by half their length; propodeal spines half as long as the basal propodeal face; anterior margin of the pronotum transversely carinulate; mesonotal convexity tilted forward on mesonotum, subangular, and marginally carinulate. Measurements (mm) Holotype major: HW 1.00, HL 1.02, SL 0.96, EL 0.20, PW 0.54. Paratype minor: HW 0.60, HL 0.74, SL 1.10, EL 0.16, PW 0.46. color Major and minor: concolorous dark yellow.
range Atlantic and Pacific slopes of Costa Rica to 800 m (J. T. Longino 1997).
Biology Nests in soil in mature rainforest; workers forage on the ground and into low vegetation, at least to some extent nocturnally (Longino 1997). One colony at La Selva was nesting in the soil (M. Byrne).
Figure Upper: holotype, major. Lower: paratype, minor. COSTA RICA: La Selva Biological Station, near Puerto Viejo, Heredia (E. O. Wilson). Scale bars = 1 mm.
Found most commonly in these habitats: 39 times found in montane wet forest, 32 times found in mature wet forest, 1 times found in tropical wet forest, 8 times found in montane wet forest, in matrix of pasture and forest, probabl old 2nd growth, 4 times found in wet forest, 4 times found in ridgetop cloud forest, 5 times found in montane wet forest, near streams, 2 times found in tropical rainforest, with some big trees, probably a mix of primary and secondary forest, 3 times found in rainforest, 1 times found in CES, ...
Found most commonly in these microhabitats: 37 times ex sifted leaf litter, 14 times at bait, 10 times beating veg., 6 times Hojarasca, 4 times bajo de M/16, 2 times pecan sandie bait, 3 times Frente al refugio hacia el sendero entre M/14 y M/15, 3 times bajo de M/17, 3 times Sobre Vegetacion, 2 times bajo de M/08, 1 times bajo de M/04, ...
Collected most commonly using these methods: 33 times baiting, 36 times miniWinkler, 14 times flight intercept trap, 14 times Malaise, 10 times beating, 5 times Berlese, 5 times Mini Winkler, 3 times Pitfall, 3 times Sweeping, 2 times Winkler, 2 times search, ...
Elevations: collected from 50 - 1150 meters, 400 meters average