Monomorium capeyork Sparks

Sparks, Kathryn S., Andersen, Alan N. & Austin, Andrew D., 2014, Systematics of the Monomorium rothsteini Forel species complex (Hymenoptera: Formicidae), a problematic ant group in Australia, Zootaxa 3893 (4), pp. 489-529: 500-501

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Monomorium capeyork Sparks


Monomorium capeyork Sparks   , NEW SPECIES

( Fig. 4 View FIGURE 4 g–i, 11 a)

Holotype worker. Queensland. 69 km N Archer, Wenlock Riv, - 12.4533, 143.4722, 30 Jul 2007, A.L. Hertog, TERC 4 (deposited in QM).

Paratypes. 4 workers, same data as holotype; 5 workers, Queensland Merepah   Station, Cape York Peninsula, - 13.585, 141.8748, 21 Sep 2011, A. Andersen, ANA 11–39 (deposited in QM, SAM).

Diagnosis. A large amber orange species with small eyes, a deeply concave clypeus, strigate frons and a finely reticulate T 1.

Worker measurements (n= 9). HW 0.94–0.99, HL 0.98–1.01, EL 0.16–0.18, PMH 0.35–0.41, PH 0.29–0.33, PNH 0.2–0.25, LHW 0.55–0.60, EW 0.11–12, PML 0.59–0.64, ML 0.99–1.07, PL 0.43–0.51, PNWdv 0.23–0.27.

Worker Description. Large species with a large, rectangular head; posterior cephalic margin shallowly concave. Anterodorsal margin of the clypeus deeply concave with frontolateral carinae produced anteriorly, extending well beyond anteroventral margin, with acute anterolateral angles and with small, rounded, preapical teeth or nodules; clypeus anteroventral margin with or without a small median projection. Frons strigate, extending well above antennal lobes or with strigae, restricted to antennal lobes and area in between; coarse lateral cephalic strigae reach anterior eye margin. Eyes small, EW <0.2 x LHW, 12 ommatidia in longest vertical axis, 9 in longest horizontal axis.

Mesonotum strigulate/alveolate laterally and on posterior mesonotum, in many specimens also over promesonotal suture, central area smooth; posterior mesonotum appears raised in some specimens. Mesopleuron alveolate with a few strigae extending anteriorly from metanotal groove. Propodeum in lateral view with dorsolateral angles clearly forming an obtuse angle, sculpture alveolate with strigae extending over metapleural gland bulla and a few strigulae on lateral surface of posterodorsal corners; dorsal surface with a raised, transverse anterior carina, transverse strigae absent, longitudinal strigae faint or absent. Petiole node of medium breadth, between 2 and 2.5 x eye width when viewed from above; shape in posterior view broadly oval, in lateral view anterior and posterior faces converging to rounded dorsum. Petiole node and postpetiole finely reticulate, sculpture not extending more than half way to dorsal surface. T 1 finely reticulate covering at least anterior half of surface.

Head, mesosoma and legs light to dark amber orange or crimson orange, petiole and postpetiole infuscated on dorsal half, metasomal tergites dark brown except T 1 amber with a brown posterior margin, sternites amber, hairs dull yellow.

Distribution. This species is known from two localities on the Cape York Peninsula. Its range overlaps with M. merepah   sp. nov.

Etymology. The specific name is a noun in apposition taken from the region where this species has been found.

Remarks. Monomorium capeyork   bears a close morphological relationship with the three other species with a deeply concave clypeal margin: M. maryannae   sp. nov., M. merepah   sp. nov. and M. stagnum   sp. nov. but can be distinguished by the lack of sculpture on the central mesonotum and T 1 having fine reticulate sculpture that extends over at least the anterior half.

COI sequences. Genbank accession numbers for this species are KC 572903 View Materials and KC 573009 View Materials .


University of Newcastle


South African Museum


University of Coimbra Botany Department