Leioproctus (Colletellus) constrictus Leijs

Leijs, Remko, Dorey, James & Hogendoorn, Katja, 2018, Twenty six new species of Leioproctus (Colletellus): Australian Neopasiphaeinae, all but one with two submarginal cells (Hymenoptera, Colletidae, Leioproctus), ZooKeys 811, pp. 109-168 : 136-137

Leioproctus (Colletellus) constrictus Leijs sp. n. Figure 18 A–M

Specimens examined.

(12♂, 29♀): Holotype female, 16 km WNW of Merredin (31.6169S; 118.3486E), 29 Oct. 1978, Houston, T.F., on Grevillea paradoxa , WAM 12343;

Allotype male, WAM 12345, same locality data as holotype;

Paratypes: 6 females, 3 males, 16 km WNW of Merredin (31.6169S; 118.3486E), 29 Oct. 1978, Houston, T.F., on Grevillea paradoxa , WAM 12339 –42,44,46– 49; 5 females, 3.5 km W of Yellowdine (31.3286S; 119.6503E), 27 Oct. 1978, Houston, T.F., on Grevillea paradoxa , WAM 12350-4; female, 18 km SSW of Mulline (29.8686S; 120.3506E), 23 Sep. 1982, Houston, T.F. & Hanich, B.P., on Eremophila pantoni , WAM 12355; male, 1 km S of Evanston (29.7477S; 119.4814E), 23 Sep. 1982, Houston, T.F. & Hanich, B.P., on Grevillea paradoxa , WAM 19116; 2 females, 3 males, Dowerin (31.1925S; 117.0367E), 21 Oct. 1984, McMillan, R.P., on Grevillea , WAM 19828-32; 14 females, 3 males, 29 km NE of Eneabba (29.5911S; 115.4397E), 26 Oct. 2000, Houston, T.F. & Mueller, O., on Grevillea petrophiloides , WAM 31884-900; 1 male, Lochada, Omega track 1.5 km N of Mungada Rd, WA, (29.18332S; 116.45798E), 18 Sep. 2009, R. Leijs, on Ecdeiocolea monostachya . SAMA 32-033499.

Diagnosis.

Ocellocular area, clypeus, scutum, metapostnotum and terga shiny with open to sparse punctures, post-gradular areas depressed, female BTP rounded, inner hind tibial spur ciliate, male S7 ventral apical lobes with long branched setae.

Description.

Female holotype: body length: 5.9 mm; head width: 1.9 mm. Relative head measurements: HW 50, ASD 2.6, AOD 7.9, HL 38, IAD 9.4, LFW 28, OAD 16, OOD 8.4, OW 17, UFW 32, HW/HL 1.3, LFW/UFW 0.9. Relative wing measurements: MSR 1.52, FSR 1.08, SFR 0.93.

Structure: terga anteriorly strongly depressed; BTP rounded; BTP/tibial length ratio 0.18; inner hind tibial spur ciliate with 5-10 slender teeth.

Sculpture: scutum smooth with sparse punctures; metapostnotum smooth, shiny, shallow pit-reticulate; T1 lineo-reticulate, T2-3 transverse lineo-reticulate; clypeus smooth with open to sparse punctures; supraclypeal area smooth, sparsely punctate; ocellocular area smooth, shiny, sparsely punctate; frons smooth openly punctate; vertex roughened with punctures.

Coloration: terga anteriorly brown-black, posterior margins transparent orange; scopa light brown; labrum brown; mandibles brown with darker tip; flagellum F9-11 orange/brown below.

Pubescence: scutum: dispersed, medium length, branched; scutellum: long, sparse, light brown; metanotum: medium length, branched, dense on posterior margin; sterna 1-4 with fringes of long simple hairs, S5 with fringe of dense branched white hairs; scape smooth, few punctures and a few short hairs.

Description.

Male allotype: body length: 4.2 mm; head width: 1.52 mm. Relative head measurements: HW 50, ASD 3.4, AOD 6.6, HL 38, IAD 10.3, LFW 26, OAD 16, OOD 8.9, OW 18, UFW 33, HW/HL 1.3, LFW/UFW 0.8. Relative wing measurements: MSR 1.61, FSR 1.00, SFR 1.00.

Structure: terga anteriorly strongly depressed; BTP rounded, slightly elongated. S7: dorsal apical lobe absent, ventral apical lobe medium large, branched setae present on entire ventral apical lobe.

Sculpture: scutum smooth, sparsely punctate; metapostnotum smooth with shallow microsculpture; T1 lineo-reticulate, T2-3 transverse lineo-reticulate; clypeus smooth, openly to closely punctate, ventral margin width about 1/3 ocellar diameter; supraclypeal area smooth with open to sparse punctures; ocellocular area smooth, almost no punctures; frons smooth openly to closely punctate; scape minutely roughened.

Coloration: terga anteriorly brown, posterior margins transparent orange; labrum black; mandibles brown with red-brown tip; flagellum brown, lighter towards the tip; scape black.

Pubescence: scutum: long sparse whitish; scutellum: long sparse whitish; metanotum medium length branched dense on posterior margin.

Flower records.

Eremophila pantone ( Scrophulariaceae ), Grevillea paradoxa ( Proteaceae ), Grevillea petrophiloides ( Proteaceae ), Grevillea sp. ( Proteaceae ), Ecdeiocolea monostachya ( Ecdeiocoleaceae ).

Distribution.

Figure 18F.

Etymology.

The specific epithet refers to strongly depressed post gradular areas of T2-3 in both sexes.