Lasioglossum (Eickwortia) hienae Gibbs & Dumesh, 2013

Hinojosa-Díaz, Ismael A., Martínez Cervantes, Ana Celeste & Gibbs, Jason, 2025, Discovery of the males of Lasioglossum (Eickwortia) hienae and L. (E.) alexanderi, with new distributional records for the species (Apoidea, Halictidae), ZooKeys 1228, pp. 53-67 : 53-67

Lasioglossum (Eickwortia) hienae Gibbs & Dumesh

Figs 1–5 , 6–8

Lasioglossum (Eickwortia) hienae Gibbs and Dumesh 2013: 3 (♀).

Material examined.

30 specimens (3 ♂♂ previously unknown, 27 ♀♀). Mexico • 1 ♂; Oaxaca, Putla Villa de Guerrero, Entre Asunción Atoyaquillo y Cerro Campana ; 16.71075°N, 97.80907°W; 1730 m a. s. l.; 07 Nov. 2015; I. Hinojosa / C. Martínez leg.; Red aérea; OAX 165 ; CNIN • 1 ♂; Oaxaca, Pluma Hidalgo, Ranchería San Isidro ; 15.94056°N, 96.40083°W; 1255 m a. s. l.; 19 Sep. 2007; Omar Ávalos Hernández leg.; ejemplar _ id: 1088 catálogo: 31964; OAH - 215 [pencil / handwritten]; MUSEO DE ZOOLOGIA HYMENOPTERA 31964; MZFC • 1 ♂; Oaxaca, Pluma Hidalgo, Cascada mayor ; 15°55'11"N, 96°23'34"W; 900 m a. s. l.; 19 Sep. 2007; E. Suaste leg.; ES 01; MUSEO DE ZOOLOGIA HYMENOPTERA, 31873; 9–10 am; MZFC • 1 ♀; Oaxaca, Putla Villa de Guerrero, Entre Asunción Atoyaquillo y Cerro Campana ; 16.71075°N, 97.80907°W; 1730 m a. s. l.; 07 - Nov- 2015; Red aérea; Col. I. Hinojosa, C. Martínez leg.; OAX 162; CNIN • 1 ♀; Oaxaca, Putla Villa de Guerrero, Entre Asunción Atoyaquillo y Cerro Campana ; 16.71075°N, 97.80907°W; 1730 m a. s. l.; 07 - Nov- 2015; Red aérea; Col. I. Hinojosa, C. Martínez leg.; OAX 163; CNIN • 1 ♀; Oaxaca, Putla Villa de Guerrero, Entre Asunción Atoyaquillo y Cerro Campana ; 16.71075°N, 97.80907°W; 1730 m a. s. l.; 07 - Nov- 2015; Red aérea; Col. I. Hinojosa, C. Martínez leg.; OAX 164; CNIN • 1 ♀; Oaxaca, Pluma Hidalgo, Ranchería San Isidro ; 15.94056°N, 96.40083°W; 1255 m a. s. l.; 19 Sep. 2007; Omar Ávalos Hernández leg.; ejemplar _ id: 1089 catálogo: 31965; OAH - 215 [pencil / handwritten]; MUSEO DE ZOOLOGIA HYMENOPTERA 31965; MZFC • 1 ♀; Oaxaca, Pluma Hidalgo, Ranchería San Isidro ; 15.94056°N, 96.40083°W; 19 Sep. 2007; Andrés Ressendiz Flores leg.; ejemplar _ id: 1080 catálogo: 31956; AR - 03 [pencil / handwritten]; MUSEO DE ZOOLOGIA HYMENOPTERA 31956; MZFC • 1 ♀; Oaxaca, Pluma Hidalgo, Ranchería San Isidro ; 15.94056°N, 96.40083°W; 19 Sep. 2007; Marycarmen Jiménez de Loera leg.; ejemplar _ id: 1100 catálogo: 31976; MJ 04 [pencil / handwritten]; MUSEO DE ZOOLOGIA HYMENOPTERA 31976; MZFC • 1 ♀; Oaxaca, Pluma Hidalgo, Ranchería San Isidro ; 15.94056°N, 96.40083°W; 19 Sep. 2007; Marycarmen Jiménez de Loera leg.; ejemplar _ id: 1105 catálogo: 31981; MJ 06 [pencil / handwritten]; MUSEO DE ZOOLOGIA HYMENOPTERA 31981; MZFC • 1 ♀; Oaxaca, Pluma Hidalgo, Ranchería San Isidro ; 15.94056°N, 96.40083°W; 19 Sep. 2007; Marycarmen Jiménez de Loera leg.; ejemplar _ id: 1108 catálogo: 31984; MJ 06 [pencil / handwritten]; MUSEO DE ZOOLOGIA HYMENOPTERA 31984; MZFC • 1 ♀; Oaxaca, Pluma Hidalgo, Ranchería San Isidro ; 15.94056°N, 96.40083°W; 1255 m a. s. l.; 19 Sep. 2007; Marycarmen Jiménez de Loera leg.; ejemplar _ id: 1113 catálogo: 31989; MJ 10 [pencil / handwritten]; MUSEO DE ZOOLOGIA HYMENOPTERA 31989; MZFC • 1 ♀; Oaxaca, Pluma Hidalgo, Ranchería San Isidro ; 15.94056°N, 96.40083°W; 1255 m a. s. l.; 19 Sep. 2007; Marycarmen Jiménez de Loera leg.; ejemplar _ id: 1114 catálogo: 31990; MJ 10 [pencil / handwritten]; MUSEO DE ZOOLOGIA HYMENOPTERA 31990; MZFC • 1 ♀; Oaxaca, Pluma Hidalgo, La Soledad ; 15°58'18"N, 96°31'54"W; 1550 m a. s. l.; 21 Sep. 2007; Marycarmen Jiménez de Loera leg.; ejemplar _ id: 1119 catálogo: 31995; MJ 15 [pencil / handwritten]; MUSEO DE ZOOLOGIA HYMENOPTERA 31995; 09: 30 h; MZFC • 1 ♀; Oaxaca, La Soledad ; 15°58'18"N, 96°31'54"W; 1550 m a. s. l.; 19 Sep. 2007; E. Suaste leg.; ES 07; MUSEO DE ZOOLOGIA HYMENOPTERA 32002; 11: 30 am- 12: 30 pm; MZFC • 1 ♀; Oaxaca, Rancho San Isidro ; 15.94056°N, 96.40083°W; 1255 m a. s. l.; 19 Sep. 2007; Y. Ramírez leg.; YR 07; MUSEO DE ZOOLOGIA HYMENOPTERA 29804; 13: 00–14: 00 hrs; MZFC • 1 ♀; Oaxaca, La Soledad ; 15°58'18"N, 96°31'54"W; 1550 m a. s. l.; 21 Sep. 2007; Y. Ramírez leg.; YR 10; MUSEO DE ZOOLOGIA HYMENOPTERA 29801; 9: 00–10: 00 am; MZFC • 1 ♀; Oaxaca, La Soledad ; 15°58'18"N, 96°31'54"W; 1550 m a. s. l.; 21 Sep. 2007; Y. Ramírez leg.; YR 10; MUSEO DE ZOOLOGIA HYMENOPTERA 29802; 9: 00–10: 00 am; MZFC • 1 ♀; Oaxaca, La Soledad ; 15°58'18"N, 96°31'54"W; 1550 m a. s. l.; 21 Sep. 2007; Y. Ramírez leg.; YR 10; MUSEO DE ZOOLOGIA HYMENOPTERA 29803; 9: 00–10: 00 am; MZFC • 1 ♀; Oaxaca, La Soledad ; 15°58'18"N, 96°31'54"W; 1550 m a. s. l.; 21 Sep. 2007; Y. Ramírez leg.; YR 11; MUSEO DE ZOOLOGIA HYMENOPTERA 29805; 10: 00–11: 00 am; MZFC • 1 ♀; Oaxaca, La Soledad ; 15°58'18"N, 96°31'54"W; 1550 m a. s. l.; 21 Sep. 2007; Y. Ramírez leg.; YR 11; MUSEO DE ZOOLOGIA HYMENOPTERA 29806; 10: 00–11: 00 am; MZFC • 1 ♀; Oaxaca, La Soledad ; 15°58'18"N, 96°31'54"W; 1550 m a. s. l.; 19 Sep. 2007; E. Suaste leg.; ES 05; MUSEO DE ZOOLOGIA HYMENOPTERA 31814; 9: 30–10: 30 am; MZFC • 1 ♀; Oaxaca, Pluma Hidalgo- Ranchería San Isidro “ cafetal ” ; 15.94056°N, 96.40083°W; 1255 m a. s. l.; 19 Sep. 2007; A. Díaz leg.; DIMA 03; MUSEO DE ZOOLOGIA HYMENOPTERA 31854; 9: 03 am; MZFC • 1 ♀; Oaxaca, Pluma Hidalgo, Cascada mayor ; 15°55'11"N, 96°23'34"W; 900 m a. s. l.; 19 Sep. 2007; E. Suaste leg.; ES 01; MUSEO DE ZOOLOGIA HYMENOPTERA, 31868; 9–10 am; MZFC • 1 ♀; Oaxaca, Pluma Hidalgo, Cascada mayor ; 15°55'11"N, 96°23'34"W; 900 m a. s. l.; 19 Sep. 2007; E. Suaste leg.; ES 01; MUSEO DE ZOOLOGIA HYMENOPTERA, 31870; 9–10 am; MZFC • 1 ♀; Oaxaca, Pluma Hidalgo, Cascada mayor ; 15°55'11"N, 96°23'34"W; 900 m a. s. l.; 19 Sep. 2007; E. Suaste leg.; ES 01; MUSEO DE ZOOLOGIA HYMENOPTERA, 31871; 9–10 am; MZFC • 1 ♀; Oaxaca, Pluma Hidalgo, Cascada mayor ; 15°55'11"N, 96°23'34"W; 900 m a. s. l.; 19 Sep. 2007; E. Suaste leg.; ES 01; MUSEO DE ZOOLOGIA HYMENOPTERA, 31872; 9–10 am; MZFC . • 1 ♀; Colima, Hacienda San Antonio ; 19.45192°N, 103.71394°W; 1190 m a. s. l.; 26 Oct. 2015; R. Ayala leg.; a 15; EBCH • 1 ♀; Colima, Hacienda San Antonio ; 19.45192°N, 103.71394°W; 1190 m a. s. l.; 26 Oct. 2015; R. Ayala leg.; a 16; EBCH • 1 ♀; Colima, Hacienda San Antonio ; 19.45192°N, 103.71394°W; 1190 m a. s. l.; 26 Oct. 2015; R. Ayala leg.; EBCH .

Diagnosis.

Males of L. hienae resemble male Neocorynura due to the slender T 1, but they can be distinguished by the characteristics of the tribe Halictini , which include the reflexed apex of T 7, with a subapical ridge creating a false apex. Male L. hienae can be recognized by their black integument, yellow clypeal mark, anteriorly infuscate wings, and distinct tomentum on the metanotum, posterior propodeum, and base of T 2. There is currently no reliable way to distinguish the males of L. hienae and L. nycteris .

Both species share unique characters within male Lasioglossum in the Western Hemisphere: inner metatibial spur short or absent entirely, T 1 narrow (distinctly longer than wide), and hind legs long and slender.

Description.

Male: Length 8.39 mm (8.14–8.62 mm).

Head length 2.03 mm (1.91–2.17 mm). Head width 2.13 mm (2.05–2.19 mm). Intertegular span 1.47 mm (1.39–1.58 mm).

Forewing length (Total) 6.53 mm (6.34–6.76 mm), forewing length (M- 2 rm) 2.39 mm (2.28–2.55 mm).

Maximum metasomal width (T 3) 1.64 mm (1.58–1.72 mm).

Structure. Head approximately as long as wide (length / width ratio = 0.95). Gena width at midlength 0.74 × width of contiguous section of compound eye in lateral view. Supraclypeal area weakly protuberant. Clypeus width approximately twice length, width / length ratio = 2.04, projecting approximately 0.65 its length below lower margin of eyes; clypeal protuberance 0.26 mm (0.21–0.32 mm).

Ocellocular distance 2.60 × lateral ocellar diameter, approximately equal to distance between lateral ocellus and hind margin of vertex, and slightly longer than interocellar distance. Compound eyes convergent below, upper ocular distance 1.30 × lower ocular distance (Fig. 2 ). Hypostomal carinae subparallel, anterior angle acutely rounded (seemingly orthogonal in females). Antennal scape short, barely reaching midway between antennal socket and median ocellus; pedicel wider than long, two-thirds length of flagellomere 1; flagellomere 1 approximately half as long as flagellomere 2. Labrum short without apical process. Mandible simple, reaching opposing clypeal angle (Fig. 2 ). Pronotum maximum width 1.93 mm (1.86–2.03 mm); dorsolateral angle orthogonal as in the female (described as obtuse by Gibbs and Dumesh 2013); pronotal ridge uninterrupted carina mostly straight but with slight sinuation on lower half; pronotal lobe at most with a round projection (Fig. 1 ).

Inner metatibial spur absent. Tegula and forewing as in female except veins 1 rs-m and 2 rs-m not noticeably weak; hamuli arranged 4-1 - 3. Propodeum as in female. T 1 width 0.71 × T 2 width (Figs 3 , 4 ). Hind leg noticeably slender, metafemur about six times as long as wide, metatibia about eight times as long as wide.

Surface sculpture. Face as in female, except frontal areas somewhat more granular (Fig. 2 ). Lower part of gena and subgena striolate on oblique view [described as striolate in female by Gibbs and Dumesh 2013]. Mesoscutum and mesoscutellum similar to female, slightly more granular (Fig. 4 ). Mesepisternum coarsely granular-imbricate throughout, except shiny anteriorly contiguous to pronotal ventral extension. Metepisternum as in female, but transverse carinulae stronger. Propodeum noticeably striolate on entire basal area (Figs 3 , 4 ). Terga surface sculpture as in female.

Color. Body blackish brown, as described for the female in the original description, with the following remarks: apical half of clypeus bright yellow (Fig. 2 ), mandible bright yellow on outer surface except edges and basal outer interspace dark brown and apical tooth reddish amber. Posterior surface of entire flagellum and apex of flagellomere 11 amber. Tegula light brown to amber, translucid (Fig. 4 ). Legs proximally dark brown, lighter starting on distal third of femur and continuing on tibia, becoming yellow-amber on basitarsus and remaining tarsomeres, particularly on front and middle legs, pretarsal claws brown on distal half (Fig. 1 ). Forewing membrane hyaline, amber-ish, with green, yellow, and purple highlights; anterior margin infuscate, not as deeply as originally described for female; wing veins and pterostigma brown to amber-brown (Fig. 1 ). Terga blackish brown, with anterior margins (apical impressed areas) slightly reddish and lateral extensions translucid amber (Fig. 4 ); T 1 with yellowish integument proximal to propodeum; sterna 1–4 brown to dark-brown with some underlying yellow-brown coloration basally and laterally, sterna 5–6 amber (Figs 3–5 ).

Pubescence. As described for the female, with the following remarks: facial setae longer on frontal, antennal scape and lower gena (1.5–2.5 OD); tomentum dense on paraocular and supraclypeal areas, less dense but noticeable on upper clypeal section (Fig. 2 ). Mesepisternum and metepisternum with denser, shorter (as compared to female) subappressed setae; lower metepisternal and lateral surface of propodeum tomentose, posterior surface of propodeum densely tomentose. Coxae with long (1.0–1.5 OD) setae, otherwise legs with short, subappressed setae. T 2 – T 4 with bands as in female; metasomal sterna with long (1.5–2.5 OD), subappressed setae, appearing simple, arranged in bands coming off gradulus.

Genitalia. Sterna VII – VIII where not dissected. Genital capsule similar to that of L. (E.) nycteris , except as noted; gonobase short; gonocoxite noticeably strigulate, streaks not depicted in original description of L. (E.) nycteris ; gonostylus moderately elongate, with two processes, trapezoidal apical process with scattered setae on its inner facing surface (a few long ones) appearing simple as opposed to the branched ones showed for L. (E.) nycteris in drawing by McGinley (1999), and retrorse membranous lobe about two-thirds length of gonocoxite, covered with minute moderately dense setae on its outer surface; volsella seemingly with prominent lateral lobe (Figs 6–8 ).

New distributional records. The single female used for the original description of the species by Gibbs and Dumesh (2013) was collected from the southern slope of the Colima volcano, state of Colima in west-central Mexico. In this study we present specimens, including the three previously unknown males, that expand the distribution of L. (E.) hienae east and south within Mexico; all are from localities in the state of Oaxaca with elevations ranging from around 900 to 1730 m (Fig. 9 ).

Figures

Figure 9. Known localities of Lasioglossum (Eickwortia) hienae and L. (E.) alexanderi.

Figures 1–5. Male of Lasioglossum (Eickwortia) hienae 1 lateral habitus 2 face 3 dorsal habitus 4 dorsal view of mesosoma 5 ventral view of metasoma.

Figures 6–8. Male genitalic capsule of Lasioglossum (Eickwortia) hienae 6 ventral aspect 7 dorsal aspect 8 lateral aspect.