Twenty six new species of Leioproctus (Colletellus): Australian Neopasiphaeinae, all but one with two submarginal cells (Hymenoptera, Colletidae, Leioproctus) Author Leijs, Remko Author Dorey, James Author Hogendoorn, Katja text ZooKeys 2018 811 109 168 http://dx.doi.org/10.3897/zookeys.811.28924 journal article http://dx.doi.org/10.3897/zookeys.811.28924 1313-2970-811-109 B49DF845B5D94EBB917DA975C221A4F5 B49DF845B5D94EBB917DA975C221A4F5 Leioproctus (Colletellus) altispinosus Leijs sp. n. Figure 10 A-I Specimens examined. (28♂): Holotype male, 25 km SW of Tangadee ( 24.5688S ; 118.7636E ), 22 Aug. 1984, Houston, T.F. & Hanich, B.P., on Dicrastylis flexuosa , WAM 12368; Paratypes: 24 males, 24 km NNE of Beyondie ( 24.7055S ; 120.2558E ), 17 Aug. 1984, Houston, T.F. & Hanich, B.P., on Calandrinia , WAM 12305-28; male, Tangadee ( 24.5688S ; 118.7636E ), 22 Aug. 1984, Houston, T.F. & Hanich, B.P., on Calandrinia , WAM 12330; male, 10 km NNW of Meedo ( 25.6991S ; 114.7175E ), 23 Aug. 1980, Howard, C.A. & Houston, T.F., on Calandrinia polyandra , WAM 19839; male, 5 km SSE of Eurardy HS ( 27.5472S ; 114.6247E ), 27 Aug. 1999, Houston, T.F., on Calandrinia , WAM 27540. Diagnosis. Ocellocular area shiny and openly punctate, metapostnotum coarsely reticulate, S7 lateral lobes very small relative to apodemes and with robust setae. Female unknown. Description. Male holotype: body length: 5.8 mm; head width: 2 mm. Relative head measurements: HW 50, ASD 3.1, AOD 7.6, HL 40, IAD 8.7, LFW 28, OAD 15, OOD 8.8, OW 19, UFW 35, HW/HL 1.2, LFW/UFW 0.8. Relative wing measurements: MSR 1.43, FSR 0.97, SFR 0.89. Structure: terga anteriorly depressed; BTP rounded; S7: dorsal apical lobe absent, ventral apical lobe small, very robust simple setae present on ventral apical lobe; scape roughened. Sculpture: scutum closely punctate; metapostnotum dull, roughened; T1 lineo-reticulate, T2-3 transverse lineo-reticulate; clypeus shiny, closely punctate; supraclypeal area shiny, closely punctate; ocellocular area smooth openly punctate; frons densely punctate. Coloration: terga anteriorly black, posterior margins orange, transparent; mandibles brown, orange tip; flagellum dark brown. Pubescence: scutum: open, medium length, branched; scutellum: open, medium length, branched; metanotum: open, medium length, branched; sterna 5 with row of dense long straight hairs; scape with pubescence. Remarks. There is some variation in body size. There are a few exceptionally large males. Several specimens are carrying Strepsiptera . Flower records. Calandrinia polyandra , Calandrinia sp. ( Montiaceae ), Dicrastylis flexuosa ( Lamiaceae ). Distribution. Figure 10I. Figure 10. Leioproctus (Colletellus) altispinosus Leijs, sp. n. ♂ holotype WAM12368. Scale bar: 0.1 mm (F, G, H). Etymology. The specific epithet refers to the robust setae on the tip of the ventral apical lobe of male sterna 7. It also is a translation of the name of our linguistic advisor Wiebe Hogendoorn.