Atelomastix longbottomi Edward & Harvey 2010, sp. nov.

Atelomastix longbottomi, sp. nov.

Figs. 8, 63, 108, 109.

Type material: AUSTRALIA: Western Australia: holotype male, southern side of Mount Belches, Duke of Orleans Bay, 33°56’36”S, 122°33’42”E, hand collected under granite rocks, 2 June 2007, M.L. Moir, A. Longbottom (WAM T 82780). Paratypes: 2 males, collected with holotype (WAM T 82781, T 82782); 3 males, 8 females, collected with holotype (WAM T 80739).

Etymology: The specific epithet is a patronym in honour of Allan Longbottom who collected the holotype and numerous other species of Atelomastix in southwestern Western Australia.

Diagnosis: Atelomastix longbottomi is similar to A. psittacina and A. culleni but differs in the shape of sclerites a and b. The shape of the distal hood of sclerite a does not curve around to touch the tip of sclerite b and obscure the pseudoflagellum as in A. psittacina and A. culleni. Sclerite b is shorter, does not extend to sclerite a, and does not resemble a parrot beak with only a slightly curved distal tip. Sclerite c is not bifurcated, but is relatively broad, straight and only slightly tapering.

Description: Male (holotype). Colour: head, collum and anal segment dark brown, antennae, ozopores and legs fawn, prozonites fawn, metazonites fawn to darker brown in preserved specimens.

Body: ca. 21 mm long and ca. 1.5 mm wide at collum. With 44 trunk segments, 75 pairs of legs, last 3 segments without legs.

Head: with ca. 23 ocelli (Fig. 63), arranged in 5 rows (2: 4: 5: 6: 6).

Gonopods: anterior gonopods (Figs. 108, 109) lightly sclerotised, 2.4 times longer than broad; sclerite a with swollen base that forms curved distal hood; upper distal face of sclerite a with 10–16 (n=2) short blunt setae; pseudoflagellum relatively short and visible beneath distal hood; sclerite b broad, slightly curved distally, tapering to blunt tip, distal edge weakly serrate, with 7–8 (n=2) short setae; basal process of sclerite b short and broad, 0.03 times length of main process; sclerite c slightly shorter than sclerite b, not bifurcate, broad basally, tapering slightly to blunt tip, with 5 medial setae; long sub-basal setae present where sclerites overlap and group of 5–8 (n=2) short setae sub-basally on sclerite c; posterior gonopods inconspicuous, small, with several small setae on interno-lateral face of each gonopod.

Dimensions (mm): holotype male (paratype male, WAM T82781): length ca. 21, width ca. 1.5, L/W=14; sclerite a 0.912 / 0.384 (1.00/0.454), setae 16 (10); sclerite b 0.294 (0.336), basal process of sclerite b 0.011 (0.011), setae 8 (7); sclerite c 0.621 (0.672), setae 5 (5).

Female. Similar to male, other than sexual characters, and slightly larger.

Distribution and habitat: Atelomastix longbottomi is only known from the southern side of Mount Belches on Duke of Orleans Bay (Fig. 8). A total of six males and eight females were found under granite rocks, in sympatry with A. melindae.