Prenolepis subopaca Emery, 1900

Williams, Jason L., 2016, Taxonomic revision and phylogeny of the ant genus Prenolepis (Hymenoptera: Formicidae), Zootaxa 4200 (2), pp. 201-258: 242-244

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Prenolepis subopaca Emery, 1900

stat. nov.

Prenolepis subopaca Emery, 1900   , stat. nov.

( Figs 118–120 View FIGURES 118 – 120 )

Prenolepis jerdoni subopaca Emery, 1900: 699   (w.). Holotype worker, INDONESIA: Sumatra, Si-Rambé , 01.xii.1890 (E. Modigliani) ( MSNG: CASENT0905792) [examined].  

Worker diagnosis. Gracile with elongate legs (HTI> 185), antennae (SI> 185), and mesosoma (BLI> 175); in profile view, the mesosoma is especially slender and has a distinct shape, with the propodeum much taller than the pronotum ( Fig 27 View FIGURES 15 – 27 ); no erect macrosetae on the propodeum; petiole is narrow and elongate (PetWI <55); dorsal surface of pronotum, propodeum, and gaster covered in fine, dense pubescence; scale of petiole is rounded at its apex ( Fig 56 View FIGURES 51 – 56 ).

Most similar species. P. jacobsoni   , P. jerdoni   , P. naoroji  

Morphology. Worker. Measurements (n=17): CMC: 7–18; EL: 0.24–0.31; EW: 0.18–0.26; HL: 0.71–0.98; HLA: 0.38–0.50; HLP: 0.25–0.33; HW: 0.58–0.85; IOD: 0.42–0.53; LF1: 0.21–0.28; LF2: 0.15–0.20; LHT: 1.17–1.80; MMC: 0–1; MTW: 0.40–0.51; MW: 0.24–0.38; PDH: 0.29–0.43; PMC: 2–4; PrCL: 0.50–0.69; PrCW: 0.24–0.35; PrFL: 0.92–1.35; PrFW: 0.18–0.25; PTH: 0.29–0.43; PTL: 0.44–0.56; PTW: 0.21–0.30; PW: 0.48–0.60; SL: 1.23– 1.67; TL: 2.74–4.29; WF1: 0.06–0.09; WF2: 0.06–0.08; WL: 1.04–1.59; BLI: 176–206; CI: 80–87; EPI: 150–160; FLI: 135–146; HTI: 202–222; PetHI: 95–102; PetWI: 49–53; PrCI: 48–53; PrFI: 17–21; REL: 30–34; REL2: 35–41; REL3: 54–62; SI: 188–214.

Medium to dark brown; entire cuticle finely reticulate and dull; abundant decumbent setae on scapes and legs; very long, erect macrosetae on head, mesosoma, and gaster; no erect macrosetae on propodeum; fine and dense pubescence covering the dorsal surface of the pronotum, propodeum, and gaster; head slightly longer than broad and oval in shape with indistinct posterolateral corners and a convex posterior margin; eyes large and strongly convex, surpassing 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 50 View FIGURES 38 – 50 ); mandibles with 5–7 teeth (usually 6) on the masticatory margin; ectal surface of mandibles smooth and shiny; metatibia relatively elongate (HTI> 185); in profile view, propodeum is much taller than pronotum and domed with a rounded dorsal face ( Fig 27 View FIGURES 15 – 27 ); petiole is narrow and elongate (PetWI <55) with a rounded dorsal apex of the scale ( Fig 56 View FIGURES 51 – 56 ).

Notes. This species is most similar to P. jerdoni   , but can be distinguished by its finely reticulate and dull cuticle and thick patches of pubescence on the dorsal surface of the pronotum, propodeum, and gaster. Prenolepis subopaca   has very large compound eyes that are similar to those of P. naoroji   , but P. naoroji   has a distinct light blue cuticular iridescence and a shorter petiole than P. subopaca   .

Other material examined. INDONESIA: Teluk Kabah Kutai N.P., 17.ix.1993 (S. Yamane)   ; MALAYSIA: Sabah, Mt. Kinabalu N.P., 6.03N 116.32E, 17.x.1978 (B.B. Lowery) GoogleMaps   ; Sabah, Mt. Kinabalu N.P., Poring Hot Springs , 560m, 13.vii.1995 (C.A. Brühl)   ; Sabah, Mt. Kinabalu N.P., 1500m, 09.x.1997 (T. Kikuta)   ; Sabah, Crocker Range N.P., Mahua Waterfall , 1000m, 05.xi.2000 (S. Yamane)   ; Sarawak, Sedong, Kampong Tapuh , 300–450m, 10.vii.1958 (T.C. Maa)   ; Sarawak, Semengoh Forest Reserve, 1– (R.W. Taylor)   ; Selangor, Kuala Lumpur, Universiti Malaya, 10– (S.L. Heydon); Tenompok, 13.ii.1959 (T.C. Maa) SINGAPORE: Bukit Timah , 50m, 1°21'N 103°47'E, 7.iv.1989 (P.S. Ward); nr. Sambawang, (D.H. Murphy). In: ANIC, MCZC, USNM. GoogleMaps  


Museo Civico di Storia Naturale di Genova 'Giacomo Doria'


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


Australian National Insect Collection


Smithsonian Institution, National Museum of Natural History














Prenolepis subopaca Emery, 1900

Williams, Jason L. 2016

Prenolepis jerdoni subopaca

Emery 1900: 699