Drepanura citricola Womersley, 1934

Figs 6−7, 67−78

Material examined. 2 females (topotypes), Western Australia, Pelican Point, Crawley, 31o 59’ 11.95” 115o 49’ 30.93”, type locality June 2010, collected by Penelope Greenslade. All deposited in SAM.

Description. Body length up to 1.7mm. Ground colour yellow; eyes patches and Ant. II −IV dark blue (Fig. 6); some specimens with blue pigment on dorsal side of abdomen, especially lateral margin (Fig. 7).

Antenna 0.54−0.67 times length of body. Ratio of Ant. I −IV as 1.0/2.0 − 2.1/1.7 − 2.0/2.2−2.3. Distal part of Ant. IV with many sensory chaetae and normal ciliate chaetae and an apical bulb (Fig. 67). Eyes 8+8, G and H smaller. Interocular chaetae as p, q, r, s, t, p chaeta larger than others. Dorsal cephalic chaetotaxy with 4 antennal (An1, An2, An3a1, An3), 2 median (M2, M4) and 7 sutural (S0, S2, S3, S4, S 4i, S5, S 5i) macrochaetae (Fig. 68). Basal chaetae of labium as M, R, E, L1, L2, all ciliate (Fig. 69).

Dorsal macrochaetae shown as in Fig. 70. Th. II with 3 (m1, m 2i, m2) macrochaetae in Mm area and 4 (m 4i, m4, m4p, a5) macrochaetae in Ms area. Th. III with 3 (a1, a2, a3) macrochaetae in Am area and 6 (a 4i 2, a 4i, a4, a5, m 5i, m5) macrochaetae in As area.

Trochanteral organ with 9−10 chaetae (Fig. 71). Inner differentiated tibiotarsal chaetae ciliate, the most distal one smooth. Tenent hair clavate, 1.3−1.4 × length of inner side of unguis; unguis with 4 inner teeth, paired teeth located at about 0.4 distance from base to claw, and 2 unpaired teeth, first one at 0.7 and distal one at 0.8 distance from base respectively, dorsal tooth present; unguiculus acuminate and outer edge serrate (Fig. 72).

Abd. IV 3.6−4.3 times as long as Abd. III along dorsal midline. Abd. I with 4(5) (m 2i, m2, m3, m4, rarely a1) macrochaetae. Abd. II with 4 central (a2, a3, m3, m3e) and 1 lateral (m5) macrochaeta, Abd. III with 1 central (m3) and 3 lateral (am6, pm6, p6) macrochaetae (Fig. 73). Macrochaetae and bothriotricha of Abd. IV as shown in Fig. 74, lateral side with 13−14 macrochaetae on each side, central part with 18 macrochaetae. Ventral tube anteriorly with 10−11 ciliate chaetae on each side (Fig. 75); posteriorly not clearly seen; each lateral flap with 3 smooth chaetae and 6 ciliate chaetae (Fig. 76). Tenaculum with 1 large striate chaeta. Manubrial plaque with 3 ciliate chaetae and 2 pseudopores (Fig. 77). Distal smooth part of dens 2.6−3.6 times as long as mucro in length. Mucro falcate and tip of basal spine not reaching apex of apical tooth (Fig. 78).

Remarks. The species can be easily distinguished from the other Australian species in the colour pattern, as nearly the whole body is a uniform yellow.

Type locality. Australia: Perth.

Distribution. Australia: Queensland: Western Australia, Northern Territory.