Prenolepis darlena, Williams, Jason L., 2016

Williams, Jason L., 2016, Taxonomic revision and phylogeny of the ant genus Prenolepis (Hymenoptera: Formicidae), Zootaxa 4200 (2), pp. 201-258: 219

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Prenolepis darlena

sp. nov.

Prenolepis darlena   , sp. nov.

( Figs 63–65 View FIGURES 63 – 65 )

Holotype worker. NEPAL: 16km ENE Baglung, 28°18’N 83°46’E, 1100m, Schima-Castanopsis forest , 27.xi.1988 (P.S. Ward) ( USNM: USNMENT00755129); 2 paratype workers, same locality as holotype ( USNM: USNMENT00755162). GoogleMaps  

Worker diagnosis. Three small ocelli present; petiole low in profile and very narrow and elongate (PetWI <55) with a rounded dorsal apex of the scale ( Fig 51 View FIGURES 51 – 56 ); erect setae on scapes; head square in shape.

Most similar species. P. fisheri   , P. fustinoda  

Morphology. Worker. Measurements (n=3): CMC: 28–34; EL: 0.23–0.26; EW: 0.18–0.21; HL: 0.70–0.78; HLA: 0.38–0.42; HLP: 0.17–0.19; HW: 0.69–0.78; IOD: 0.45–0.49; LF1: 0.16–0.18; LF2: 0.07; LHT: 0.79–0.95; MMC: 1–3; MTW: 0.37–0.45; MW: 0.27–0.31; PDH: 0.31–0.32; PMC: 2–6; PrCL: 0.39–0.45; PrCW: 0.24–0.29; PrFL: 0.66–0.75; PrFW: 0.19–0.22; PTH: 0.21–0.25; PTL: 0.35–0.47; PTW: 0.18–0.24; PW: 0.48–0.52; SL: 0.78– 0.91; TL: 2.64–3.10; WF1: 0.05–0.07; WF2: 0.05–0.06; WL: 0.93–1.04; BLI: 133–136; CI: 98–100; EPI: 195– 233; FLI: 242–258; HTI: 114–123; PetHI: 67–69; PetWI: 51–54; PrCI: 60–69; PrFI: 28–30; REL: 32–34; REL2: 33–34; REL3: 51–54; SI: 113–120.

Light brown; cuticle of head lightly reticulate; cuticle of pronotum smooth and shiny; cuticle of gaster lightly reticulate; long, erect setae on scapes, head, mesosoma, and legs; head as broad as long and square in shape with rounded posterolateral corners; posterior margin straight; three small ocelli present; eyes moderately large and convex, but do not surpass the lateral margins of the head in full-face view; torulae do not touch the posterior border of the clypeus; clypeus strongly medially convex and without prominent anterolateral lobes ( Fig 39 View FIGURES 38 – 50 ); mandibles with 5–6 teeth on the masticatory margin; ectal surface of mandibles smooth and shiny; in profile view, propodeum is domed with a rounded dorsal face ( Fig 16 View FIGURES 15 – 27 ); petiole low in profile and very narrow and elongate (PetWI <55) with a rounded dorsal apex of the scale ( Fig 51 View FIGURES 51 – 56 ).

Etymology. The specific epithet is named after the first author’s mother, Darlene.

Notes. This species is most similar to P. fustinoda   in that the petiole is elongate with a scale that is low in profile. The scale however does not have the distinct club-like shape that is seen in P. fustinoda   . The head in this species is also square in shape with a straight posterior margin, while in P. fisheri   and P. fustinoda   the head is subtriangular with a weakly convex posterior margin.

Other material examined. THAILAND: Doi Inthanon, 1950m, 16.iv.1981 (W.L. Brown). In: MCZC.  


Smithsonian Institution, National Museum of Natural History


Coleccion Mastozoologica del Centro de Investigacion en Biodiversidad y Conservacion,Universidad Autonoma del Estado de Morelos


Harold L. Lyon Arboretum


Lahti City Museum


Perth Museum and Art Gallery