Exocelina bifida Shaverdo, Hendrich & Balke, 2012

Shaverdo, Helena, Sagata, Katayo, Panjaitan, Rawati, Menufandu, Herlina & Balke, Michael, 2014, Description of 23 new species of the Exocelinaekari-group from New Guinea, with a key to all representatives of the species group (Coleoptera, Dytiscidae, Copelatinae), ZooKeys 468, pp. 1-83 : 34-36

Taxon classification Animalia Coleoptera Dytiscidae

Exocelina bifida Shaverdo, Hendrich & Balke, 2012 Fig. 20

Records.

Papua New Guinea: Sandaun Province (first record): 6 males, 5 females "Papua New Guinea: Sandaun, Mianmin area,>600m, 13.i.2010, Ibalim & Pius (PNG236)", two males additionally with labels "DNA M. Balke 4926" and "DNA M. Balke 4927" (NHMW, ZSM). 8 males, 6 females "Papua New Guinea: Sandaun, Mianmin area,>600m, 13.i.2010, Ibalim & Pius (PNG235)" (NHMW, ZSM). 4 males, 3 females "Papua New Guinea: Sandaun, Mianmin area,>700m, 14.i.2010, 04 54.540S 141 36.953E, Ibalim & Pius (PNG238)" (NHMW, ZSM). 3 males, 3 females "Papua New Guinea: Sandaun, Mianmin (river), 700m, 21.x.2008, 04.52.858S 141.31.706E, Ibalim (PNG 197)" (ZSM). 1 female "Papua New Guinea: Sandaun, Mianmin, 1080m, 24.x.2008, 04.55.780S 141.38.185E, S. Ibalim PNG195" (ZSM). 1 male, 1 female "Papua New Guinea: Sandaun, Ofektaman, 820m, 17.x.2008, 5.04.113S 141.35.841E, Ibalim (PNG 190)", male additionally with a label "DNA M. Balke 3722" (ZSM).

Morphological notes.

Beetles are smaller (TL-H 3.1-3.55 mm, TL 3.45-3.85 mm, MW 1.7-1.9 mm) than ones from the type locality: IN: Papua, Jayawijaya, Borme, Tarmlu. Also they have a slightly different shape of the median lobe of the aedeagus: the apex is less concave and narrower in ventral view and the right lateral side broader than in Exocelina bifida (Fig. 20C). Differences in the setation of the protarsi and parameres are most likely within in the limits of intraspecific variability (Figs 20B, E). In order to establish the status of these specimens, additional material from the border area, IN: Papua, Jayawijaya / PNG: Sandaun, is needed.

Distribution.

Central part of the New Guinea Island, i.e., Indonesia: Papua Province, Jayawijaya Regency and Papua New Guinea: Sandaun Province.