Demeijerea brachialis (Coquillett)

Saether, Ole A., 2011, Glyptotendipes Kieffer and Demeijerea Kruseman from Lake Winnipeg, Manitoba, Canada, with the description of four new species (Diptera: Chironomidae), Zootaxa 2760, pp. 39-52 : 40

Demeijerea brachialis (Coquillett)

( Fig. 1 D)

Material examined. CANADA: Manitoba, Lake Winnipeg, Victoria Beach, 1 male, 1 female, 9.vii.1969.

The male imago caught has 37 sensilla chaetica at 0.30–0.85 on ta1 of p2 and no sensilla chaetica on p3. The female has 102 sensilla chaetica on on ta1 of p2, 128 on ta1 of p3. Lobes of gonapophysis as in fig 1 D (from Saether 1977 fig. 80 G).

Distribution and ecology. The species is known from Manitoba, Ontario, New York to New Jersey, Oregon, Idaho, Utah, Arkansas, Kentucky, North Carolina, Alabama and south to Florida ( Townes 1945: 137, Gillespie 1974: 142, Oliver et al. 1990: 45).

The larvae have been reported mining freshwater sponges and Bryozoa ( Heyn 1992).

Figures

FIGURE 1. Demeijerea spp. A – C. Demeijerea spinulata sp. n. A – thorax; B – frontal tubercles; C – hypopygium. D – Demeijerea brachialis (Coquillett), female, lobes of gonapophysis, apodeme lobe (ApL), ventrolateral lobe (VlL) and dorsomesal lobe (DmL).