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Parasphecodes tooloomensis musgravei Cockerell 1929b: 230.
Lasioglossum (Callalictus) musgravei - Michener 1965: 170.
Material examined. Holotype of musgravei ♀, Queensland, [Lamington] National Park, Macpherson Range, 22 December 1926 - K57736 (AM).
Diagnosis
Lasioglossum (Callalictus) musgravei is distinguished in both sexes from other Callalictus species by the primarily dark brown to black body colours except the scutellum, metanotum and legs which are ochre coloured (the male colouration has red-brown suffused in T2–T5) (Figs 5A–D). The body of Lasioglossum musgravei is relatively smooth with microtessellate sculpture and minute punctures on the mesoscutum. The dorsal surface of the propodeum is smooth and weakly carinate along the posterior margin. The male is characterised by modifed tarsi as follows: the fore tarsal segments is horizontally compressed, flattened, apically bilobed and weakly convex dorsally (forebasitarsus ratio of width versus length as 0.6), with elongate lateral hair tufts from each tarsal segment (Figs 5D–E, 6), ventral surface of fore and mid tarsal segments dark coloured but with pale white line running down the middle of each segment, mid tarsal segments similar to fore tarsi but to a lesser degree. The male sternal vestiture is strong across S3–S5 (Fig. 5F) but not as developed and striking as found in Lasioglossum callomelittinum (Fig. 4F). The male genitalia of L. musgravei (Figs 2E–F) are similar to that found in L. aurantiacum (Figs 2A–B) but can be separated by the different lengths of setae on the gonostyli compared to all setae being the same length on L. aurantiacum.
Description of female (Figs 5A–B) Body length: 6.75–7.25–7.54 mm (n=6); forewing length: 2.21–2.26–2.30 mm (n=6); head width: 2.21–2.23–2.26 mm (n=6); intertegular distance: 1.73–1.77–1.82mm (n=6). Relative head measurements: HW: 100, HL: 90–92, UID: 50–51, LID: 51–52, IAD: 6–7, OAD: 27–28, IOD: 13–14, OOD: 10–12, CL: 22–23, GW: 18–19, EW: 28–29, SL: 40–42, FL: 82–85. Head. Inner eyes parallel to diverging below; median frontal carina reaching half way to median ocellus; clypeus polished on anterior one third, remainder dull on posterior half covered with microtessellate sculpture, anterior half with several large, irregular shaped punctures, posteriorly openly to closely punctate with small, rounded punctures, supraclypeal area dull, covered with microtessellate sculpture, sparsely punctate across surface with small rounded punctures; frons sculpture above antennal bases densely punctate, densely punctate sculpture extends to only width of antennal bases, either side openly to sparsely punctate and smooth along eye margins. Mesosoma. Pronotum dorsolateral angles prominent in dorsal and lateral views; mesoscutum anterior mesial margin produced mesoanteriorly, surface dull, mesially openly to sparsely punctate, entire surface covered with a fine, microtessellate sculpture, parapsidal areas closely punctate with small punctures, either side of parapsidal lines densely punctate with distinct interspaces, closely to densely puncate along posterior margin; scutellum length greater than dorsal surface of propodeum, (1.25 x), scutellum strongly bi-bulbous with raised mounds on either side of midline, closely punctate along midline, remainder openly punctate, surface dull; propodeum weakly carinate along posterior margin only, carinae below dorsal level and on either side of midline but carinae do not meet mesially, no distinct dorsal rim, horizontal dorsal surface of propodeum V-shaped, laterally remainder of dorsal surface curve steeply on to vertical surface giving a "saddle-like" appearance, lateral margin smooth, dorsal surface microtessellate with several weak striae mesially, sculpture reaches to posterior rim, lateral margins microtessellate only; mesepisternum striolate, metepisternum smooth and openly punctate; first recurrent vein entering second marginal cell. Metasoma and legs. Metasomal T1–T5 dull, smooth, T1–T2 openly punctate with minute punctures, T3–T5 impunctate; inner hind tibial spur pectinate, teeth distinctly separate.
Colour. (Figs 5A–B) Head and mesoscutum black except antennal scape, flagella and clypeus dark brown, mandibles ochre coloured, apically red-brown, pronotum, scutellum, metanotum and legs ochre to light brown coloured, metasoma black or light red brown, areas suffused with black, T5 generally dark brown to black.
Vestiture. Body vestiture sparse, some adpressed hair in supraclypeal areas, dense white hair around pronotum lateral spiracle cover, dense cover of minute, adpressed white hair on lateral margins of propodeum.
Description of male: (Figs 5C–D, 6) Body length: 9.11 mm (n=1); forewing length: 2.26 mm (n=1); head width: 2.06 mm (n=1); intertegular distance: 1.39 mm (n=1). Relative head measurements: HW: 100, HL: 95, UID: 49, LID: 40, IAD: 08, OAD: 27, IOD: 15, OOD: 09, CL: 27, GW: 14, EW: 40, SL: 22, AS4/AS2+3 (20/15) 1.3, FL: 172. Differs from female as. Inner eyes converging below; Median frontal carina reaching just above upper antennal insertion points; frons sculpture reticulate across surface except smooth along inner margins of eyes; scape reaches well below level of median ocellus; clypeus surface dull, divided into two sections, section below the supraclypeal area about one third length of clypeus continues contours, section two about two thirds length of clypeus almost at right angle to section one leading back to the base of the labrum; mesoscutum surface dull, covered with microtessellate pattern, mesially openly punctate, openly punctate towards parasidal areas, in parasidal areas densely punctate, punctures minute; scutellum dull, distinctly bi-bulbous, openly to closely punctate with small, shallow punctures; dorsal surface of propodeum acarinate; legs with fore tarsal segments horizontally compressed, flattened, apically bilobed and weakly convex dorsally, mid tarsal segments with similar shape but to lesser extent to fore tarsal segments (forebasitarsus and midbasitarsus width versus length ratio as 0.6), tarsal segments with lateral hair tufts (Figs 5D–E, 6), ventral surface of fore and mid tarsal segments dark coloured but with pale white line running down the middle of each segment, mid tarsal segments similar to fore tarsi but to a lesser degree, fore and mid femora swollen mesially, fore femora more so; colour similar to female, head black, pronotum, mesepisternum and metepisterum light red-brown, propodeum black, legs bright ochre coloured, metasoma with T1 and T4–T5 dark brown to black, T2–T3 ochre coloured. Vestiture. Head with dense cover of adpressed hair in paraocular areas and up frons to level of medium ocellus, forming a dense matt, mesepisternum with some long hairs basally, propodeum laterally with dense cover of short adpressed hair, mesosoma with sparse cover of erect hair, mesoventral area with tufts of long backwardly directed hair basally, metasomal sternal S3 straight across apical margin, S4 concave across apical margin, S3 vestiture with a medium cover of backwardly directed plumose branched hair, mesially hairs longer and reaching S4 hairs, S4 with dense cover of V-shaped cover of plumose branched, backwardly directed hair across sternite, S5 with moderate cover of inwardly pointed hairs, S6 with sparse cover of hair inwardly pointed to the midline (Fig. 5F).
Genitalia and associated sterna. (Figs 2E–F) Gonobase sides parallel to slightly narrowed basally, complete ventroapically, gonobase width almost half of gonocoxite width, gonocoxite glabrous, dorsal inner margins of gonocoxite basally broadly truncate; apical inner margin not produced and continues contours of gonostylus, glabrous; retrorse lobes large, almost meeting at midline, membraneous and pointing towards midline; outer margins and inner margins of retrorse lobes glabrous; gonostyli erect, distally large and tapered and rounded distally, with dense cover of long, simple, erect hair, length of hairs at least one third width of gonobase, hairs of two different lengths, most hairs about equal length except a few distal hairs about 1.5 length of other hairs, hairs distally curved inwardly towards midline; penis valves strongly curved apically, with short dense cover of hair dorsolaterally.
Other specimens examined (6♀; 1♂)
QUEENSLAND: (1♀) Eungella Nat. Pk, 16–19 Oct 1979 HB & MA Evans (QM)
NEW SOUTH WALES & AUSTRALIAN CAPITAL TERRITORY: (1♂) Eden Rd, Tomewin, 17 Dec 2021, on flowers of Delarbrea michieana Marama Hopkins (NMV); (4♀) Gibraltar Range Nat. Pk, 15--17 Nov 1979, N.W. Rodd (AM); (1♀) Dorrigo Nat. Pk, 17 Nov 1980, N.W. Rodd (AM)
Images only: (1♂) Eden Rd, Tomewin, 17 Dec 2021, on flowers of Delarbrea michieana Marama Hopkins. Facebook link: https://www.facebook.com/photo/?fbid= 10160029068768854&set=pcb.3078069862433295; (1♀) Eden Rd, Tomewin, 25 Oct 2021, Marama Hopkins. Video of female bee collecting pollen: https://www.flickr.com/photos/190704092@N07/51626920333/in/album-72157720111971722/
Floral Record. Family Visited: 1 (Myodocarpaceae (1)). Genus Visited: 1 (Delarbrea (1))
Flight Phenology capture records. Jan (0) Feb (0) Mar (0) Apr (0) May (0) June (0) July (0) Aug (0) Sept (0) Oct (1) Nov (4) Dec (1)
Distribution. Sporadic collections from Central Queensland (Eungella Nat. Pk near Mackay) down to Dorrigo Nat. Pk (near Grafton) NSW (Fig. 1C).
Remarks. The single male specimen collected is distinctly larger than any known female. It was photographed (Fig. 6) and collected at Tomewin, NSW flying with females of Lasioglossum musgravei. The male ocelli appear slightly enlarged as is typically found in low-light bees. Lasioglossum musgravei resembles L. aurantiacum but can be separated by different body colour markings and subtle gonostyli hair length male genitalia characters.