Triepeolus shoshone, Onuferko & Rightmyer, 2024

Onuferko, Thomas M. & Rightmyer, Molly G., 2024, A revision of the simplex species group of the cleptoparasitic bee genus Triepeolus Robertson, 1901 (Hymenoptera: Apidae), European Journal of Taxonomy 950 (1), pp. 1-106 : 87-91

Triepeolus shoshone sp. nov.

urn:lsid:zoobank.org:act:E7F437ED-E934-4E01-9FCC-3151D1C3EF6F

Figs 12O , 15F, 30

Proposed common name

Shoshone triepeolus.

Diagnosis

The following morphological features in combination tell T. shoshone sp. nov. apart from all other Triepeolus in the simplex species group except T. apache sp. nov.: the T1 basal band forms an inflexed arch and is thus gradually narrowed but not completely interrupted medially, such that the discal patch has a short, narrowed (i.e., inverted V-shaped) anteromedial projection ( Figs 15F , 30B ), and the legs are entirely reddish orange from trochanters to tarsi ( Fig. 30A–C ). Whereas in T. apache the T1 apical transverse band is interrupted or (less commonly) at least narrowed medially and the T2 apical transverse band is narrowed or interrupted medially, in T. shoshone T2 and usually also T1 have complete apical transverse bands ( Figs 15F , 30B ). Although it might not be possible to separate certain individuals morphologically, throughout most of its range T. shoshone can be separated from T. apache by geography; the former is a northern species whose known range extends from northern Arizona and northern New Mexico to Western Canada whereas the latter is a southern species known only from the Southwestern United States and adjacent Mexico.

Etymology

This species is named for the Shoshone people, whose traditional territory spans much of its known range.

Material examined

Primary type material

USA • ♀, holotype; Utah, Hwy 491, San Juan County; 37.8350° N, 109.1110° W; 27 Jul. 2007; J. Gibbs and C.S. Sheffield leg.; BOLD sample ID: CMNTO_063 ; PCYU PCYU-GS-07:2170 .

Secondary type material

CANADA – Alberta • 1 ♀, paratype; 6 km E of Writing-on-Stone Provincial Park (at bridge); 12 Aug. 1982; D.B. McCorquodale leg.; RAM • 1 ♀, paratype; Lethbridge ; 9Aug. 1921; H.L. Seamans leg.; CNC 753877 • 2 ♀♀, paratypes; Medicine Hat ; 17 Jul. 1917; Sladen leg.; CNC 753824 , 753826 . – British Columbia • 1 ♀, paratype; Fernie ; 3 Aug. 1963; G. Bohart and P. Torchio leg.; BBSL BBSL522497 . – Saskatchewan • 1 ♀, paratype; Grasslands National Park ; 49.1371° N, 107.6149° W; 25 Jul. 1996; A.T. Finnamore leg.; RAM PMAE 17947 • 1 ♀, paratype; Grasslands National Park ; 49.1643° N, 107.4351° W; 23 Jul. 1996; A.T. Finnamore leg.; RAM PMAE 16026 • 1 ♀, paratype; Maple Creek Golf Course ; 49.9021° N, 109.4654° W; 13 Jul.–9 Aug. 2018; RSM Bee Team leg.; BOLD sample ID: CCDB-38770 B12 ; RSKM RSKM_ENT_E-208865 • 1 ♀, paratype; Near Avonlea ; 50.0240° N, 104.9650° W; 7 Jul. 2017; G. Wihlidal leg.; RSKM RSKM_ENT_E-172173 • 1 ♀, paratype; near Avonlea Badlands ; 50.0229° N, 104.9842° W; 29 Jul. 2016; C.S. Sheffield leg.; BOLD sample ID: CCDB-25139 G11 ; RSKM RSKM_ENT_E-185221 .

USA – California • 1 ♀, paratype; Turlock , Stanislaus County; 1 Sep. 1953; R.R. Snelling leg.; USNM • 1 ♀, paratype; same data as for preceding; 18 Apr. 1957; R.R. Snelling leg.; USNM. – Colorado • 2 ♀♀, paratypes; C.F. Baker leg.; USNM • 1 ♀, paratype; Costilla County; Jul. ??20; S. McCampbell leg.; CSUC • 1 ♀, paratype; Denver ; 19 Jun. 1917; E.C. Jackson leg.; USNM. – Idaho • 2 ♀♀, paratypes; 4 mi W of Homedale , Owyhee County; 21 Jul. 1959; W.F. Barr leg.; BBSL BBSL Faunal Survey Nos 000 086 098 , 000 086 099 • 1 ♀, paratype; Boise ; 15 Jun. 1941; CAS • 1 ♀, paratype; Grand View ; 27 Jul. 1926; R.W. Haegele leg.; USNM • 1 ♀, paratype; Hot Springs , Owyhee County; 5 Jul. 1956; W.F. Barr leg.; USNM • 1 ♀, paratype; Melba ; 18 Jun. 1926; R.W. Haegele leg.; USNM • 1 ♀, paratype; Oreana; 25 Jun. 195?; A.R. Gittins leg.; BBSL BBSL Faunal Survey No. 000 086 097 • 5 ♀♀, paratypes; Parma , Canyon County; 12 Jul. 1966; G.E. Bohart leg.; BBSL BBSL Faunal Survey Nos 000 086 100 to 000 086 104 • 1 ♀, paratype; same data as for preceding; 12 Jul. 1966; G.E. Bohart leg.; BBSL BBSL582464 . – Montana • 2 ♀♀, paratypes; ANSP. – Nevada • 1 ♀, paratype; 2 mi N of Nixon , Washoe County; 16 Jun. 1972; J.D. Pinto leg.; UCR UCRC ENT 57154 • 5 ♀♀, paratypes; 4 mi N of Nixon , Washoe County; 7 Jun. 1996; F.D. Parker leg.; BBSL BBSL581745 , BBSL581746 , BBSL581758 , BBSL581762 , BBSL581833 • 1 ♀, paratype; Beowawe , Eureka County; 30 Jul. 1969; R.M. Bohart leg.; UCBME • 1 ♀, paratype; Fallon ; 18 Jun. 1930; E.L. Bell leg.; AMNH • 1 ♀, paratype; Nixon , Washoe County; 20 Jun. 1927; E.P. Van Duzee leg.; CAS • 1 ♀, paratype; same data as for preceding; 24 Jun. 1964; D.F. Veirs leg.; BBSL BBSL522486 • 1 ♀, paratype; same data as for preceding; 24 Jun. 1964; J.E. Slansky leg.; UCBME M.G.R. Database No. 1209 • 1 ♀, paratype; same data as for preceding; 24 Jun. 1964; R.M. Bohart leg.; UCBME • 1 ♀, paratype; Orovada , Humboldt County; 14 Jul. 1962; M.E. Irwin leg.; UCBME • 2 ♀♀, paratypes; Pyramid Lake , Washoe County; 25 Jun. 1970; B.L. Villegas leg.; UCBME • 1 ♀, paratype; same data as for preceding; 25 Jun. 1970; R.M. Bohart leg.; UCBME • 1 ♀, paratype; Sand Pass , Washoe County; 7 Aug. 1957; R.C. Bechtel leg.; FSCA • 1 ♀, paratype; Winnemucca , Humboldt County; 24 Jun. 1973; P.F. Torchio leg.; BBSL BBSL522487 . – New Mexico • 2 ♀♀, paratypes; Koehler; 1 Aug. ??14; W.R. Walton leg.; USNM. – Oregon • 1 ♀, paratype; 5 mi NW of Adrian , Malheur County; 25 Jun. 1958; R.K. Eppley leg.; BBSL BBSL Faunal Survey No. 000 086 096 • 1 ♀, paratype; 6 mi S of Adrian , Malheur County; 28 Jul. 1957; R.K. Eppley leg.; BBSL BBSL Faunal Survey No. 000 086 095 • 1 ♀, paratype; Klamath Avenue (SW of Nyssa ), Malheur County; 6 Sep. 1957; R.K. Eppley leg.; BBSL BBSL Faunal Survey No. 000 086 094 • 7 ♀♀, paratypes; Ontario; 2 Aug. 1929; H.A. Scullen leg.; BBSL BBSL Faunal Survey Nos 000 086 087 to 000 086 093 . – South Dakota • 1 ♀, paratype; Cave Hills ; 22 Jul. 1928; H.C. Severin leg.; USNM M.G.R. Database No. 1374 . – Utah • 3 ♀♀, paratypes; 12 mi NW of Fillmore , Millard County; 20 Jun. 1972; F. Parker and D. Vincent leg.; BBSL BBSL522489 to BBSL522491 • 1 ♀, paratype; 3 mi W of Hatton ; 3 Jun. 1959; BBSL BBSL522484 • 1 ♀, paratype; Gandy ; Apr. 1949; G.E. Bohart leg.; BBSL BBSL522485 • 3 ♀♀, paratypes; Hwy 491, San Juan County; 37.8350° N, 109.1110° W; 27 Jul. 2007; J. Gibbs and C.S. Sheffield leg.; PCYU PCYU-GS-07:2171 , PCYU-GS-07:2173 , PCYU-GS-07:2181 • 1 ♀, paratype; Sinbad Country (E of Block Mountain ), Emery County; 24 Jul. 1981; Parker, Veirs, and Griswold leg.; BBSL BBSL224656 . – Wyoming • 2 ♀♀, paratypes; Grand Teton National Park ; Jul. ??37; BBSL BBSL Faunal Survey Nos 000 086 085 , 000 086 086 • 1 ♀, paratype; Sheridan Local Training Area , Sheridan County; 10 Jul. 2000; B.C. Kondratieff, P.M. Pineda, and H. Al-Dhafer leg.; CSUC .

DNA barcoded material

Available. BIN: BOLD:ADH5866. See type material for specimens examined and sequenced (indicated by unique BOLD sample ID).

Description

MEASUREMENTS OF HOLOTYPE. Body length 9.8 mm; ITW 2.3 mm; head length 2.6 mm; head width 3.6 mm; fore wing length 8.2 mm (margins of both worn).

Female

INTEGUMENT COLORATION. Dark brown to black except as follows. Mandible with apical third golden yellow (entirely dark brown/black in some paratypes). Mandible with basal two-thirds; labrum along apical and lateral margins; scape, pedicel, and F1 extensively; succeeding flagellomeres to some extent; tegula; coxae to some extent; trochanters to tarsi (excluding brown meso- and metatibial spurs) entirely; metasomal terga laterally; and pseudopygidial area with underlying integument, pygidial plate, and metasomal sterna to some extent reddish orange. Fore wing membrane subhyaline, apically dusky. Hind wing membrane dusky subhyaline to hyaline.

PUBESCENCE. Face with tomentum densest around antennal socket. Clypeus, upper paraocular and frontal areas, and vertexal area mostly exposed. Pronotal collar with tomentum uniformly pale yellow. Mesoscutum with well-defined paramedian band of pale-yellow tomentum, tapering slightly toward but not attaining anterior margin; pale tomentum otherwise mostly restricted to lateral and posterior margins. Mesopleuron with off-white to pale-yellow, appressed, branched setae; upper half densely setose, except behind pronotal lobe, with setae slightly sparser on hypoepimeral area; ventrolateral half sparsely setose. Mesopleuron with sparse, pale-yellow, erect/suberect, simple setae (less than ½ MOD in length) in addition to usual appressed, branched setae. Metanotum with tomentum uninterrupted, uniformly pale yellow. Propodeal triangle mostly glabrous, with (pale) setae restricted to small lateral patches. Metasomal terga with bands of pale-yellow tomentum. T1 with apical transverse band complete (narrowly interrupted medially in some paratypes), transverse bands subparallel, discal patch transversely oblong or trapezoidal with short, narrowed (i.e., inverted V-shaped) anteromedial projection. T2–T4 with complete apical transverse bands, those of T2–T3 medially somewhat removed from apical margins of terga, that of T2 with pair of basomedially convergent anterolateral extensions. T5 with large patch of pale-yellow tomentum on each side lateral to pseudopygidial area. Pseudopygidial area with triangular region of posteriorly directed setae with three subregions (basal patch of dense, golden setae; darker subapical band of sparser, coppery brown setae; and apical row of dense, suberect, silvery setae) within larger trapezoidal space of posteromedially directed coppery brown setae. S2–S3 with apical transverse bands of white tomentum (ill-defined and/or reduced to posterolateral patches in holotype and some paratypes). S4 with apical transverse band of white tomentum. S5 with apical fimbria of coppery bristle-like setae.

SURFACE SCULPTURE. Labrum coarsely and densely (most i <1d) rugose-punctate. Clypeus densely punctate (most i≤ 1d) but interspaces well defined, shining; with many small punctures among larger ones. Vertexal area somewhat sparsely punctate (some i>2d), especially around ocelli. Mesoscutum, mesoscutellum, and axilla with punctures more or less equally dense (most i ≤ 1d); interspaces well defined, shining. Mesopleuron with punctures in upper half nearly contiguous and denser (i<1d) than in ventrolateral half (i≤ 2d); interspaces shining where punctures not contiguous; punctures similar in size throughout. Discs of metasomal terga with punctures very fine, dense (i≈ 1d), and evenly distributed; interspaces shining somewhat.

STRUCTURE. Labral apex with pair of small denticles, each preceded by longitudinal carina. Pronotal collar short (medial length ~ ½ MOD). Mesoscutellum weakly bigibbous. Axilla extending little if at all beyond midlength of mesoscutellum; tip distinctly pointed, but mesally unattached to mesoscutellum for less than 2/5 medial length of axilla; lateral margin relatively straight. Fore wing with three submarginal cells. T5 with concave apical margin. Pygidial plate apically truncate. S5 straight in lateral view.

Male

Unknown.

Distribution

Western United States and adjacent Canada ( Fig. 12O ).

Ecology

Host records

Unknown.

Floral records

Labels of examined voucher specimens indicate that this species has been collected from the following flowering plant species: in Asteraceae , Centromadia pungens Greene and Tetradymia canescens DC. ; in Cleomaceae , Cleomella sp. ; in Fabaceae , Melilotus albus ; in Grossulariaceae DC. , Ribes sp. ; and in Tamaricaceae , Tamarix sp. or spp. and T. gallica L.

Remarks

Triepeolus shoshone sp. nov. is very similar to T. apache sp. nov., and the two cannot be consistently separated morphologically (see Remarks under T. apache for information pertaining to their treatment as separate species).

Figures

Fig. 12A–D (continued on next page). Distribution maps. A. All species in the Triepeolus simplex group. B. T. apache sp. nov. C. T. eumeniformis sp. nov. D. T. hirsutus sp. nov. Approximate geographic ranges are indicated in orange and were estimated from occurrence records known to the authors (yellow and blue circles, with the latter indicating localities of DNA barcoded specimens).

Fig. 15. T1 of female, dorsal view. A. Triepeolus apache sp. nov., paratype (AMNH). B. T. hirsutus sp. nov., paratype (AMNH). C. T. oblongimacula sp. nov., paratype (AMNH). D. T. rhododontus Cockerell, 1921 (AMNH). E. T. segregatus (Cockerell, 1900) (PCYU). F. T. shoshone sp. nov., paratype (PCYU PCYU-GS-07:2171).

Fig. 30. Triepeolus shoshone sp. nov. A–B. Holotype, ♀ (BOLD sample ID: CMNTO_063; PCYU PCYU-GS-07:2170). A. Habitus, lateral view. B. Habitus, dorsal view. C. Paratype, ♀ (RAM PMAE 16026), habitus, lateral view. D. Paratype, ♀ (PCYU PCYU-GS-07:2173) pseudopygidial area, dorsal view.