Revision of the Nearctic species of the Lasioglossum (Dialictus) gemmatum species complex (Hymenoptera: Halictidae)
Fig. 76. Male genitalia illustrated in dorsal view and positioned such that the gonostylus is parallel to the plane of vision. Retrorse lobes are also illustrated separately to the bottom left of each figure in lateral view, positioned parallel to the plane of vision. A. Lasioglossum (D.) angelicum sp. nov.B. L. (D.) coactus (Cresson, 1872). C. L. (D.) deludens sp. nov. D. L. (D.) diabolicum sp. nov.E. L. (D.) gaudiale (Sandhouse, 1924). F. L. (D.) gloriosum sp. nov. (the retrorse lobe was not visible for illustration). G. L. (D.) helianthi (Cockerell, 1916). H. L. (D.) holzenthali sp. nov. I. L. (D.) indagator sp. nov. J. L. (D.) magnitegula sp. nov. K. L. (D.) perparvum (Ellis, 1914). L. L. (D.) profoundum sp. nov. M. L. (D.) pseudotegulare (Cockerell, 1896). N. L. (D.) rufodeludens sp. nov. This genital capsule was damaged during dissection and some details may be slightly distorted.O. L. (D.) stictaspis (Sandhouse, 1923) (holotype) (reproduced from Gardner & Gibbs 2022). P. L. (D.) tegulariforme (Crawford, 1907) (reproduced from Gardner & Gibbs 2022). Scale bars = 0.25 mm.
Fig. 82. Ventral surface of head showing postgena. A. Lasioglossum profundum sp. nov., ♀, smooth and shiny. B. L. coactus (Cresson, 1872), ♀, dull and lineolate. Scale bars = 0.5 mm.
Fig. 85. Metasomal terga. A. Lasioglossum coactus (Cresson, 1872), ♀, with T2–T3 each slightly convex and apical rim downcurved in lateral view.B. L. tegulare (Robertson, 1890), ♀, with T2–T3 each flat and apical rim continuous with contour of disc in lateral view. Scale bars = 0.5 mm.
Fig. 86. T2–T3.A. Lasioglossum coactus (Cresson, 1872), ♀, with complete subapical band of tomentum on T3 and deep and dense punctures on disc of T2 contrasting with sparsely punctate apical rim. B. L. angelicum sp. nov., ♀, T3 without complete subapical band of tomentum and fine T2 punctures not contrasting across premarginal line. Scale bars = 0.5 mm.
Fig. 106. Metasomal terga. A. Lasioglossum coactus (Cresson, 1872), ♂, T1–T3 each strongly convex with abruptly depressed apical rim. B. L. helianthi (Cockerell, 1916), ♂, T1–T3 each weakly convex with apical rim weakly depressed. Scale bars = 1 mm.
Fig. 107. T2. A. Lasioglossum coactus Cresson, 1872), ♂, apical rim deeply depressed and impunctate, contrasting with very densely punctate disc. B. L. helianthi (Cockerell, 1916), ♂, apical rim flat with gradual change in punctation across premarginal line. Scale bars = 0.5 mm.
Fig. 11. Georeferenced collection records of Lasioglossum (D.) coactus (Cresson, 1872) (black squares) and predicted distribution by maximum entropy ecological niche modelling in Maxent (colour shading). Warmer colours indicate higher cloglog probability of occurrence.
D. J. Brothers & Krueger & Charles D. Michener
Richard S. Peigler & Leuchtenbergia principis
T. P. Friedlander & T. A. Friedlander & P. W. Kovarik