Colletes michenerianus Moure, 1956

Ferrari, Rafael R., 2019, A revision of Colletes Latreille (Hymenoptera: Colletidae: Colletinae) from Brazil, Paraguay and Uruguay, Zootaxa 4606 (1), pp. 1-91 : 50-53

Colletes michenerianus Moure, 1956

( Figs. 19 , 29, 30, 45B, 45D, 51C)

Colletes micheneriana Moure, 1956: 201 . Holotype ♀ examined. (DZUP). Colletes michenerianus ; Michener & Lange 1957: 77; Michener et al. 1958b: 208; Torchio 1965: 187; Graf 1967: 129, 1968:

73; McGinley 1981: 90; Torchio et al. 1988: 620; Schlindwein 1995: 88, 1998: 51; Moure & Urban 2002: 13; Silveira et al.

2002: 155; Moure et al. 2007: 684, 2012; Ascher & Pickering 2018. Colletes mochinerianus (sic); Michener et al. 1958a: 4.

Diagnosis: Both sexes of C. michenerianus can be diagnosed through the combination of mesoscutum with offwhite and black hairs intermixed, legs with fuscous to black hairs, and T1–T5 discs metallic-blue. Colletes michenerianus is most similar to C. cyaneus as in both species T1–T5 discs are metallic-blue, characteristic of which is unique amongst the species of the genus found in southern Brazil. However, their females can be differentiated from one another by labrum medially concave in C. michenerianus (labrum medially convex in C. cyaneus ); and scopa with fuscous hairs in C. michenerianus (scopa with pale-yellow hairs in C. cyaneus ). The males of the two species can be distinguished by malar area relatively short, ~1.5x as long as basal depth of mandible, in C. michenerianus (malar area ~1.8x as long as basal depth of mandible in C. cyaneus ); and legs with fuscous hairs in C. michenerianus (legs with off-white hairs in C. cyaneus ).

Redescription: FEMALE ( Figs. 29A, 29C, 29E ):

Dimensions (mm): Approximate body length 9.8–10.2; head width 3.5–3.7; head length 2.7–2.8; intertegular distance 2.9–3.1; forewing length 8.1–8.4.

Colouration: Black except T1–T5 (except marginal zones dark-brown with purplish reflections) metallic darkblue. Distal 1/3 of mandible, distal half of tarsal claws reddish-brown. Ventral surface of F2–F5, tegula, wing venation (except veins R and C of forewing black), stigma, dorsal surface of tarsi (except basitarsi black), posteroventral surface of mid and hind femora, posterior surface of hind tibia, ventrally inflexed lateral areas of T1–T4, S1–S5 posteriorly, S6 mid-longitudinally dark-brown. Proximal half of tarsal claws, marginal zones of S1–S5 pale-brown.

Structure: Labrum medially convex; convexity not margined laterally by lateral ridges. Clypeal mid-longitudinal area shallowly and narrowly (0.4x MOD) depressed on upper half. Malar area ~1.1x as long as basal depth of mandible (48:45). Hypostomal carina short and flat. F1 ~1.5x as long as its apical width (46:30). UID:LID (69:68). Frontal area without protrusion below lateral ocellus. Vertexal area concave behind upper summit of eye in postero-lateral view. Dorsolateral angle of pronotum pointed. Mesepisternum ventrally, near ventral end of episternal groove, without protrusion surrounded by appressed hairs. Horizontal surface of metapostnotum ~0.4x as long as metanotum (19:46); metapostnotal pits poorly-delimited; posterior transverse carina sinuous and incomplete. Posteromedial surface of front coxa without spine. Posterior hind tibial spur ciliate. Hind basitarsus ~3.2x longer than broad (51:16). Outer rami of hind tarsal claws ~2.2x as long as inner rami (13:6). Marginal zone of T1 flat. Marginal zone of S6 depressed.

Pubescence: Head with plumose, erect, long, off-white and black hairs intermixed; except mandible with fus- cous setae; genal area with short hairs near outer margin of eye. Mesosoma with black, plumose, erect, long hairs; pronotal lobe and mesoscutum with black long hairs and off-white moderately long hairs intermixed; mesepisternum and metepisternum with very long hairs; lateral surface of propodeum with off-white, suberect, moderately short hairs posteriorly. Legs with fuscous, erect, moderately long setae (except femoral and tibial scopae with paleyellow, branched apically only, suberect, very long hairs anteriorly); trochanters and femora with black, plumose, erect, long hairs anteroventrally; front and mid tibiae with suberect, short setae anterodorsally (except mid tibia with erect setae anteriorly); posterior margins of basitarsi and posterior surface of hind tibia with long setae (those setae very long on mid and hind basitarsi). Metasoma terga with fuscous, suberect, short setae; except T1 with plumose, erect, moderately long hairs; T4–T5 with black, erect, long setae laterally; T6 covered with black, suberect, moderately long setae. Metasomal sterna with fuscous, suberect, moderately short setae; except S1 with plumose, erect, long hairs; S2 with branched apically only, erect, moderately long hairs; S3–S5 with minute setae anteriorly; S2–S5 marginal zones with a transverse line of pale-yellow, plumose, suberect, moderately short hairs.

Surface sculpture: Clypeal mid-longitudinal depression densely and moderately coarsely punctate (interspaces imbricate above, smooth below); adjacent convex area sparsely punctate (interspaces smooth throughout). Supraclypeal area imbricate. Malar area with fine, collapsing punctures above (interspaces rather finely striate); substrigulate near mandibular base. Paraocular area densely and moderately finely punctate (except punctures coarser towards clypeus and sparser near antennal socket); interspaces imbricate. Frontal area densely and moderately coarsely punctate; interspaces imbricate. Vertexal area sparsely and finely punctate near eye (interspaces smooth, except imbricate posteriorly); punctures crowded and moderately fine near lateral ocellus. Mesosoma with imbricate interspaces, except when stated otherwise. Mesoscutum and scutellum densely and coarsely punctate (except mesoscutum posteromedially and scutellum anteriorly with sparse punctures). Metanotum densely and moderately coarsely punctate; punctures poorly-delimited, interspaces rugose. Mesepisternum densely and coarsely punctate (except punctures crowded below scrobe). Metepisternum with oblique carinae mid-anteriorly; densely and moderately coarsely punctate above and below. Lateral surface of propodeum sparsely and finely punctate. Vertical surface of metapostnotum rugose above. Metasoma with imbricate interspaces throughout. T1–T5 sparsely and minutely punctate. T6 moderately densely and finely punctate. S1 sparsely and finely punctate. S2–S4 moderately densely and finely punctate (except sparsely punctate mid-longitudinally and densely punctate posteriorly). S5–S6 densely and moderately finely punctate.

MALE ( Figs. 29B, 29D, 29F ). As in female, except for usual secondary sexual characteristics and as follows:

Dimensions (mm): Approximate body length 8.0–8.5; head width 3.0–3.3; head length 2.5–2.7; intertegular distance 2.2–2.5; forewing length 7.2–7.7.

Colouration: Ventral surface of flagellum black. Hind leg dark-brown (except dorsal surface of hind distitarsus pale-brown). T6 metallic dark-blue. S6 disc entirely dark-brown.

Structure: Clypeal mid-longitudinal area shallowly depressed throughout; depression relatively narrow (0.6x MOD) above, much broader (1.5x MOD) below. Malar area ~1.5x as long as basal depth of mandible (46:30). F1 ~1.1x as long as its apical width (28:26). UID:LID (66:61). Horizontal surface of metapostnotum ~0.4x as long as metanotum (17:41); metapostnotal pits well-delimited. Hind basitarsus ~4.1x longer than broad (53:13). Outer rami of hind tarsal claws ~1.6x as long as inner rami (11:7). Marginal zone of S6 not depressed. S7, S8 and genitalia as in Figs. 30A, 30B, 30C , respectively.

Pubescence: Mandible with pale-yellow setae. Clypeus, supraclypeal area and paraocular area near clypeus with off-white hairs only. Genal area with pale-yellow, very long hairs towards proboscidial area. Vertexal area with black, very long hairs near occipital area. Mesosomal hairs as long as those on mesepisternum. Metanotum with very long hairs. Lateral surface of propodeum with black, erect hairs throughout. Legs with pale-yellow hairs (except front and mid femora and tibiae with fuscous hairs posteriorly). T1 with black, plumose, erect, long hairs; those hairs moderately short on T2. T1–T5 marginal zones with narrow band of off-white, plumose, appressed, short hairs; bands interrupted medially on T1–T4, complete on T5–T6. Metasomal sterna discs with pale-yellow hairs; S2 with plumose hairs; S3–S5 with moderately short setae anteriorly, those setae moderately long laterally.

Surface sculpture: Clypeus with convex area largely impunctate. Malar area substrigulate throughout. Paraocular area with rugulose interspaces above. Frontal area punctures crowded. Vertexal area densely and moderately finely punctate near eye; interspaces rugulose. Mesosoma moderately densely punctate; punctures poorly-delimited; interspaces rugulose. Mesepisternum sparsely punctate towards ventral surface. T1–T6 sparsely and finely punctate. S2–S4 evenly moderately sparsely punctate. S6 sparsely and finely punctate.

Material studied: Primary type specimen: Holotype ♀ —“HOLOTIPO”. “GUARAPUAVA 1120; Paraná BRA- SIL; 7-IX-1955; Michener e Moure ”. “michenerianus”. { DZUP}.

Secondary type specimens: Allotype ♁: BRAZIL—Paraná: Guarapuava, 7/ix/1955, [Michener & Moure], { DZUP }. Paratypes ♀♀ and ♁♁: BRAZIL—Paraná: Curitiba, x/1944, [J. Moure], 1♀, { DZUP }; idem, except viii/1954, [J. Moure], 2♁♁; idem, except viii/1955, [R. Lange], 1♁. Curitiba-Paranaguá Highway km 8, 14/ix/1955, [Lange, Michener & Moure], 1♁, { DZUP }. Guarapuava, 7/ix/1955, [Michener & Moure], 1♁, { DZUP }; idem, except 1♀ 1♁, { SEMC }.

Additional specimens: BRAZIL — Paraná: Curitiba,, [S. Laroca], 11/ix/1963, 1♁, { SEMC }; idem, except 1/x/1963, 1♀. Palmas, (-26.5570, -51.5420), 21/ix/2012, [Pereira-Rocha], 1♁, { DZUP }.

Range: Brazil (Paraná). See also Fig. 19 .

Biogeographical distribution: Paraná dominion ( Araucaria Forest province) at altitudes of 800–1200m a.s.l.

DNA barcode: Unavailable.

Floral hosts: Berberidaceae— Berberis laurina Thunb. ( Schlindwein 1995, 1998). Leguminosae— Prosopis sp. (this study).

Comments: Rare species seemingly associated with the Araucaria Forest in Southern Brazil.

Moure (1956) raised the question that C. michenerianus could be but a subspecies of C. cyaneus , even though he had listed a few characteristics (e.g. sculpture of labrum and malar area length) that could be used to distinguish the two forms from each other (see Moure 1956: 203). Indeed, the characters mentioned by Moure coupled with those listed in the “Diagnosis” (see above) support the status of C. michenerianus as a valid, separate species.

Figures

FIGURE 19. Geographical distribution of Colletes furfuraceus (green diamonds), C. michenerianus (red stars), and C. rufipes (blue circles). Scale bar approximately 250km.

FIGURE 29. Colletes michenerianus Moure, 1956. Female: (A) habitus, lateral view; (C) face, frontal view; (E) habitus, dorsal view. Male: (B) habitus, lateral view; (D) face, frontal view; (F) habitus, dorsal view. Scale bars = 1mm.

FIGURE 30. Dorsal view of the male terminalia of Colletes michenerianus. (A) S7; (B) S8; (C) genital capsule. Scale bars = 1mm.