Colletes kerri 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 : 43-45

Colletes kerri Moure, 1956

( Figs. 4 , 25, 26, 56A )

Colletes kerri Moure, 1956: 197 ; Michener & Lange 1957: 79; Michener et al. 1958a: 10, 1958b: 208; Rozen 1966: 12, 1991: 29; Roig-Alsina 1991: 259; Moure & Urban 2002: 11; Silveira et al. 2002: 155; Moure et al. 2007: 683; Moure et al. 2012; Ramos et al. 2015: 338; Ascher & Pickering 2018.

Holotype ♀ examined. (DZUP).

Diagnosis: Colletes kerri is diagnosable by having clypeus and supraclypeal area longitudinally finely striate. This species is most similar to C. ferenudus n. sp. as in their females (the male of the latter is unknown) the mesoscutal pubescence is pale-orange, and T2–T5 are covered with sparse short setae, without dense appressed hairs. The females of the two species, however, can be distinguished from one another by labrum convex medially in C. kerri (labrum concave medially in C. ferenudus n. sp.); and mesepisternum with smooth interspaces in C. kerri (mesepisternum with imbricate interspaces in C. ferenudus n. sp.).

Redescription: FEMALE ( Figs. 25A, 25C, 25E ):

Dimensions (mm): Approximate body length 11.4–11.9; head width 3.6–3.8; head length 3.0–3.2; intertegular distance 3.2–3.5; forewing length 8.7–9.0.

Colouration: Black except distal 2/3 of mandible (apical tooth with dark-yellow spot distally), distal half of tarsal claws reddish-brown. Ventral surface of F3–F10 (except F10 pale-brown apically), wing venation (except vein R of forewing black), stigma, anteroventral surface of femora, dorsal surface of tibiae and tarsi (except distitarsi pale-brown), proximal half of tibial spurs, marginal zones of T1–T5, ventrally reflexed lateral area of T1, S2–S5 posteromedially, S6 anteriorly and laterally dark-brown. Distal half of tibial spurs, proximal half of tarsal claws, ventrally inflexed lateral area of T6, S6 mid-longitudinally pale-brown. Tegula pale-orange. T1–T5 discs with blueish reflections. Marginal zones of S1–S5 pale-yellow.

Structure: Labrum medially convex; concavity not margined laterally by longitudinal ridges. Clypeal midlongitudinal area evenly broadly (1.4x MOD) depressed throughout; depression shallow above, somewhat deeper below. Malar area ~0.9x as long as basal depth of mandible (41:46). Hypostomal carina short and flat. F1 ~1.5x as long as its apical width (44:30). UID:LID (72:68). Frontal area without protrusion below lateral ocellus. Vertexal area flat behind upper summit of eye in postero-lateral view. Dorsolateral angle of pronotum rounded. Mesepisternum ventrally, near ventral end of episternal groove, without protrusion surrounded by appressed hairs. Horizontal surface of metapostnotum ~0.3x as long as metanotum (17:66); metapostnotal pits well-delimited; posterior transverse straight and incomplete. Posteromedial surface of front coxa without spine. Posterior hind tibial spur ciliate. Hind basitarsus ~3.5x longer than broad (60:17). Outer rami of hind tarsal claws ~2.3x as long as inner rami (16:7). Marginal zone of T1 flat. Marginal zone of S6 depressed.

Pubescence: Head with off-white, plumose, erect, moderately long hairs; except mandible and clypeal subapical pit with fuscous setae; paraocular, frontal and vertexal areas with off-white and black hairs intermixed; genal area (towards proboscidial area) and vertexal area (near occipital area) with long hairs. Mesosoma with pale-orange, plumose, erect, long hairs; except pronotal and mesoscutal hairs somewhat shorter than those of scutellum; mesepisternum and metepisternum with pale-yellow very long hairs; lateral surface of propodeum with appressed, moderately short hairs on disc. Legs with fuscous, erect, moderately long setae; except trochanters and femora with pale-yellow, plumose, erect, long hairs anteroventrally; femoral and tibial scopae with pale-yellow, branched apically only, suberect, very long hairs anteriorly; dorsal surface of front and mid tibiae with suberect, short setae; basitarsi with very long setae on posterior margins. Metasomal terga with fuscous, suberect, minute setae on discs; except T1 with pale-yellow, plumose, erect, long hairs (those hairs suberect and moderately short laterally); T4–T5 with erect, moderately long setae (those setae long laterally); T6 entirely covered with black, suberect, moderately long setae; T1 marginal zone with off-white, plumose, appressed, short hairs; T2–T3 with distal bands of appressed hairs largely interrupted medially. Metasomal sterna pale-yellow, erect, moderately short setae; except S1 with plumose, long hairs; S2 with branched apically only, moderately long hairs; S2–S3 with a transverse line of branched apically only, suberect, short hairs near marginal zones; S4–S5 with long setae near marginal zones; S6 with fuscous setae posterolaterally.

Surface sculpture: Clypeal mid-longitudinal depression impunctate and smooth; convex area substrigulate near depression, sparsely and moderately finely punctate towards lateral slopes (interspaces smooth). Supraclypeal area substrigulate. Malar area sparsely and moderately finely punctate; interspaces substrigulate. Paraocular area densely and moderately coarsely punctate (except punctures somewhat sparser towards antennal socket and finer near lower end of facial fovea); interspaces smooth throughout. Frontal area densely and coarsely punctate; interspaces rugulose. Vertexal area sparsely and minutely punctate (except densely and moderately finely punctate posteriorly); interspaces smooth. Mesoscutum densely and coarsely punctate; interspaces smooth. Scutellum and metanotum with punctures crowded and moderately coarse (except scutellum coarsely punctate anteriorly); interspaces rugose. Mesepisternum punctures crowded and coarse anterior to episternal groove and below scrobe; punctures somewhat sparser ventrally; interspaces smooth. Metepisternum with oblique carinae mid-anteriorly; punctures crowded and moderately coarse above and below (interspaces rugose). Lateral surface of propodeum sparsely and finely punctate; punctures difficult to discern from overall rugulose interspaces. Vertical surface of metapostnotum rugose above. Metasomal terga sparsely and minutely punctate (except T6 moderately sparsely and finely punctate); T1–T5 with minute and moderately fine punctures intermingled (more markedly on T5); interspaces smooth (except imbricate on T5–T6). S1–S2 sparsely and finely punctate; S3–S5 densely and finely punctate (except punctures somewhat coarser laterally); S6 densely and moderately coarsely punctate (except minutely punctate anteriorly and mid-longitudinally); interspaces imbricate on S1, S5 and S6, smooth on S2–S4.

MALE ( Figs. 25B, 25D, 25F ). As in female, except for usual secondary sexual characteristics and as follows:

Dimensions (mm): Approximate body length 10.0–10.4; head width 3.2–3.5; head length 2.7–2.9; intertegular distance 3.1–3.3; forewing length 8.0–8.4.

Colouration: Mandibular apical tooth entirely reddish-brown. Ventral surface of F2 dark-brown. Veins M+Cu and V of forewing pale-brown. Legs dark-brown (except trochanters black and dorsal surface of front and mid distitarsi and hind tarsus pale-brown). S6 disc dark-brown.

Structure: Labrum medially flat. Clypeal mid-longitudinal area deeply depressed; depression relatively narrow (0.8x MOD) above, much broader (maximum width 2.4x MOD) below. Malar area 0.8x as long as basal depth of mandible (36:45). F1 subequal in length to its apical width (27:26). UID:LID (67:59). Vertexal area concave behind upper summit of eye in postero-lateral view. Horizontal surface of metapostnotum ~0.3x as long as metanotum (19:72); metapostnotal pits poorly-delimited; posterior transverse sinuous. Hind basitarsus ~ 3x longer than broad (53:18). Outer rami of hind tarsal claws ~1.9x as long as inner rami (15:8). Marginal zone of S6 not depressed. S7, S8 and genital capsule as in Figs. 26A, 26B, 26C , respectively.

Pubescence: Frontal area with black hairs only. Pronotal and mesoscutal hairs as long as those of scutellum. Lateral surface of propodeum with erect hairs throughout. Legs with pale-yellow setae (except tibiae with fuscous setae posteriorly). Mid and hind basitarsi with long setae on dorsal surface. T2 disc with pale-yellow, plumose, erect, moderately short hairs. S2 with plumose hairs. S6 with suberect setae (except setae erect posterolaterally).

Surface sculpture: Clypeal mid-longitudinal depression sparsely and moderately finely punctate; convex area smooth throughout (except substrigulate below). Supraclypeal area substrigulate mid-longitudinally, smooth laterally. Paraocular area punctures crowded above. Lateral surface of propodeum with well-delimited, moderately coarse punctures; interspaces imbricate. T1 densely and moderately finely punctate. T2–T3 moderately densely and finely punctate. T2–T4 with imbricate interspaces. T6 sparsely and minutely punctate. S2–S5 minutely punctate mid-longitudinally. S6 sparsely and minutely punctate (except densely and moderately finely punctate anterolaterally). S2–S6 with smooth interspaces posteriorly.

Material studied: Primary type specimen: Holotype ♀ —“HOLOTIPO”. “ Araucaria ; 28-i-56; PARANÁ ”. “KERRI”. { DZUP}.

Secondary type specimens: Paratypes ♀♀ and ♁♁— BRAZIL — Paraná: Araucária , 28/i/1956, [W. Kerr] , 4♀♀ 4♁♁, { DZUP }; idem, except 2♀♀ 1♁, { SEMC }.

Additional specimens: BRAZIL — Paraná: Campina Grande do Sul , 17/ii/2007, [Melo & Vivallo], 1♀, { DZUP }.

Range: BRAZIL (Paraná). See also Fig. 4 .

Biogeographical distribution: Parana dominion ( Araucaria forest province) at altitudes of 800– 100m a.s.l.

DNA barcode: Unavailable.

Floral hosts: Unknown

Comments: Uncommon species likely endemic to the Araucaria forest ecoregion in southern Brazil.

Individuals of the cuckoo Isepeolus viperinus ( Holmberg, 1886) ( Hymenoptera : Apidae ) were found in the nests of C. kerri from which the type specimens of the host were obtained by W. Kerr ( Moure 1956).

Figures

FIGURE 4. Geographical distribution of Colletes altimontanus (blue circles), C. kerri (red stars), and C. pampeanus sp. n. (green diamond). Scale bar approximately 250km.

FIGURE 25. Colletes kerri 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 26. Dorsal view of the male terminalia of Colletes kerri. (A) S7; (B) S8; (C) genital capsule. Scale bars = 1mm.

FIGURE 56. Lateral view of head. (A) Paraocular area with intermixed black and off-white hairs in Colletes kerri; (B) paraocu- lar area with only pale-yellow hairs in C. meridionalis. Scale bars = 1mm.