Acrotrichis cognata (Matthews, 1877)

Darby, Michael, 2019, New Ptiliidae (Coleoptera) from Sarawak in the spirit collection of the Natural History Museum, London, European Journal of Taxonomy 512, pp. 1-50 : 37

Acrotrichis cognata (Matthews, 1877)

Fig. 17D

Diagnosis

The microtrichiate elytra ( Fig. 17D ) and the shape of the spermatheca distinguish this species. The elytral microtrichiae give the elytra a dull appearance rather than the blue-grey iridescent sheen of Nearctic and Palaearctic specimens which I have seen tempting a determination as the very similar, both morphologically and in the form of the spermatheca, with the equally widespread A. josephi Matthews, 1872 .

Material examined

MALAYSIA-BORNEO • 1 ♀; Sarawak, 4 th division, Gunung Mulu National Park ; 800–1700 m a.s.l.; 29 Apr. 1978; I. Hanski leg., BM 1978-525 ; pitfall trap fishbait, LMR forest slope 4-6; BMNH .

Remarks

Adventive, synanthropic, parthenogenetic species recorded from North America and New Zealand.

Figures

Fig. 17. A. Acrotrichus britteni Johnson, 1969, spermatheca. B. Acrotrichis cursitans Nietner, 1856, setae on ventrite VI ×1420. C. Acrotrichis agricola Darby, 2019, spermatheca. D. Acrotrichis cognata (Matthews, 1877), microtrichae on elytra ×1520. E. Baeocrara sp., medial portion of collar ×3150. F. Acrotrichis bubalis Darby, 2019, setae on submentum ×1320.