Six new, unusually small ants of the genus Leptomyrmex (Hymenoptera: Formicidae).
Smith, D. J.
Shattuck, S. O.
Zootaxa
2009
2142
57
68
urn:lsid:biosci.ohio-state.edu:osuc_concepts:251518
urn:lsid:zoobank.org:act:E5D08900-7974-4EF3-A066-3709A1C5BFE9
Insecta
Formicidae
Leptomyrmex
CoL
Animalia
Leptomyrmex dolichoscapus
Leptomyrmex dolichoscapus Smith & Shattuck 2009:61
Hymenoptera
61
Arthropoda
species
dolichoscapus
(Figs 7-9, 19, 20, 22)
Types. Holotypeworker from Mary Creek site 1, 1000m, 16°33.6'S 145°16.5'E, Queensland, 20 Nov 2005,12341, Sze Yek, Rainforest, day, hand collect, Steve Williamssite CU10A1 ( QMBA: QMBA T143382); two paratypeworkers, same data as holotype ( QMBA: QMBA T143384, T143385).
Diagnosis. Head elongated head (CI less than 79, Fig. 19), antennal scape very elongated (SI greater than 220, Fig. 20) and extending beyond the vertex of the head by 2/3 their length. Palps very long. Anterior mesonotum with a weak "bump". Pilosity short adpressed hairs.
Worker description. In full face view vertex of head convex, rounding into sides of head, sides of head weakly rounded, widest at mid-length, eyes placed at mid-length of head capsule. Palps long extending to posterior of head capsule or just beyond. Pronotum above level of promesonotal suture, posterior margin of pronotum rounding sharply to the suture; anterior portion of the mesonotum initially in same plane as pronotumthen rounding sharply into descending plane of remainder of mesonotum (Fig. 8) producing a weakly raised anterior mesonotal "bump". Legs long; hind tibial spurs with reduced barbules, barbules absent from basal 1/4. Dark brown in colour. FIGURES 7-12. Leptomyrmex dolichoscapus sp. n.holotype worker. Fig. 7, front of head; Fig. 8, lateral view of body; Fig. 9, dorsal view of body. Leptomyrmex garretti sp. n.holotype worker. Fig. 10, front of head; Fig. 11, lateral view of body; Fig. 12, dorsal view of body. Measurements. Wo r k e r (n = 3) - CI 63-66; EL 0.20-0.22; HL 0.92-0.95; HW 0.58-0.63; MTL 0.98-1.04; SI 230-239; SL 1.37-1.44; WL 1.48-1.64.
Comments. This species is known from only a single locality. It occurs in rainforest and is sympatric with L. garrettifrom which it is readily distinguished from by its extremely long scapes. Given that L. garrettiis also found at lower altitudes in the area it would be interesting to examine samples from along the ranges to determine whether this species is restricted to higher altitudes within in the wet tropics.
923890613
20 Nov 2005,
day, hand collect
CU, QMBA
Australia
-16.56
Mary Creek site 1
145.275
QMBA T 143382
Holotype
923890614
QMBA
Australia
QMBA T 143384, T 143385
paratype