Apiochaeta mallochi, Lonsdale & Marshall, 2008

Lonsdale, Owen & Marshall, Stephen A., 2008, Revision of the temperate South American genus Apiochaeta Czerny, 1903, with synonymy of Alloclusia Hendel, 1917 (Diptera: Clusiidae), Zootaxa 1944 (1), pp. 1-33 : 20

Apiochaeta mallochi sp. n.

Description

Male. As described for A. lenticula except as follows: length 3.8–4.0mm; male with wide light brown to brown spot on first flagellomere around base of arista; spot on occiput dark yellow to light brown; anepisternum brown excluding ventral margin; anepimeron and katatergite (excluding posterior margin) brown.

Female. As described for male except as follows: first flagellomere (excluding basal margin) sometimes light brown; back of head yellow, sometimes with one pair of faded lateral spots; abdomen sometimes entirely brown (excluding terminalia); if tergite 1 yellow, then anterior margin of tergites 3 and 4 yellow, or tergites 2– 4 yellow with posterior corners brown.

Male terminalia. As described for A. lenticula except tergite 7 small and with strong central invagination.

Etymology: The specific name honours J.R. Malloch, who revised the Chilean Clusiidae in 1933.

Holotype: CHILE. Concepción : 62 km S San Pedro, 12.xii.1982 – 2.i.1983, A. Newton & M. Thayer (♂, CNC).

Paratypes: CHILE. Aysén: Río Mañiguales , 72°30’W, 45°25’S, L.E. Peña, 26–28.i.1961 (♀, DEBU) , 21–28.i.1961 (♀, CNC) , Puerto Cisnes , 72°41’W, 44°45’S, 16–28.ii.1961, L.E. Peña (♀, USNM) , Cautín: Los Coiqües, L. Villar, 16–31.xii.1964 (♀, CNC) , Concepción: Same collection as holotype (3♂ ♀, CNC; 2♂, DEBU; ♂, USNM) .

Comments: Apiochaeta mallochi most closely resembles A. excepta and A. lenticula , but unlike A. excepta , tergite 1 is yellow, the lateral scutellar bristles are stronger than the apical bristles, and the male genitalia resemble those of A. lenticula . Compared to A. lenticula , A. mallochi is smaller, darker, there are no stripes behind the female head and male tergite 7 is smaller and more poorly-developed.