Colletes ferenudus Ferrari, 2019

Ferrari, Rafael R., 2019, A revision of Colletes Latreille (Hymenoptera: Colletidae: Colletinae) from Brazil, Paraguay and Uruguay, Zootaxa 4606 (1), pp. 1-91 : 25-28

Colletes ferenudus Ferrari , new species

( Figs. 13 , 14 , 49A, 50A)

Diagnosis: The combination of mesoscutum with pale-orange hairs, mesepisternum with imbricate insterspaces, and T2–T5 covered with sparse black short setae is sufficient to diagnose C. ferenudus n. sp. This species is most similar to C. kerri as in their females (the male of C. ferenudus n. sp. is unknown) the mesoscutum has pale-orange hairs and T2–T5 are not covered with dense appressed hairs. However, the two species can be distinguished from one another by clypeus striate only below in C. ferenudus n. sp. (clypeus striate throughout in C. kerri ); and mesepisternum with imbricate interspaces in C. ferenudus n. sp. (mesepisternum with smooth interspaces in C. kerri ).

Description: FEMALE ( Figs. 13 A–C):

Dimensions (mm): Approximate body length 11.2; head width 3.6; head length 2.6; intertegular distance 3.1; forewing length 8.6.

Colouration: Black except distal half of mandible, distal 1/3 of tarsal claws reddish-brown. Ventral surface of F2–F9 dark-orange. Tegula, wing venation (except veins C and R of forewing black), proximal 1/3 of tarsal claws pale-brown. Tibial spurs, dorsal surface of distitarsi, marginal zones of T1–T5 dark-brown. Marginal zones of S1–S5 pale-yellow.

Structure: Labrum medially concave; concavity not margined laterally by longitudinal ridges. Clypeal midlongitudinal area shallowly depressed on lower 3/4; depression moderately broad (0.8x MOD) above, much broader (1.9x MOD) towards lower margin. 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 (42:28). UID:LID (69:65). Frontal area without protrusion below lateral ocellus. Vertexal area concave 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 ~0.5x as long as metanotum (20:41); metapostnotal pits well-delimited; posterior transverse carina sinuous and complete. Posteromedial surface of front coxa with weak spine. Posterior hind tibial spur ciliate. Hind basitarsus ~3.8x longer than broad (68:18). Outer rami of hind tarsal claws 2.8x as long as inner rami (14:5). Marginal zone of T1 flat. Marginal zone of S6 not depressed.

Pubescence: Head with plumose, erect, moderately long, off-white and black hairs intermixed; except mandible with pale-yellow setae on lower margin; interantennal, upper paraocular, vertexal and genal (towards proboscidial fossa) areas with long hairs. Mesosoma with pale-orange, plumose, erect, long hairs; except pronotal lobe and mesoscutum with moderately long hairs, upper margin of lateral surface of propodeum with very long hairs; mesepisternum and metepisternum with pale-yellow and fuscous hairs intermixed; lateral surface of propodeum with pale-yellow, appressed, short hairs on disc. Legs with fuscous hairs (except mid and hind trochanters and femora with off-white hairs and hind tarsus with pale-yellow setae on posterior margin); trochanters and femora with plumose, erect, long hairs; femoral and tibial scopae with branched apically only, suberect, very long hairs anteriorly mid and hind tibiae with suberect, short setae (except posterior surface with erect setae); tarsi and hind tibia with erect, moderately long setae (except hind tarsus with long setae on posterior margin). T1 with pale-yellow, plumose, erect, long hairs (those hairs suberect, moderately long laterally); T2–T5 with pale-yellow, suberect, moderately short setae on discs; discs of T2–T4 also with off-white, sparse, plumose, appressed, very short hairs; T6 with black, suberect, moderately short setae. S1 with pale-yellow, plumose, erect, moderately long hairs; S2 with fuscous, branched apically only, erect, moderately short hairs on disc; S3–S6 with pale-yellow, erect, short setae on discs (except S5 with moderately long setae laterally); S2–S5 marginal zones with plumose, suberect, short hairs Surface sculpture: Clypeus sparsely and moderately coarsely punctate (except lateral slopes densely and moderately finely punctate); interspaces imbricate; lower 1/3 longitudinally striate medially. Supraclypeal area imbricate. Malar area substrigulate. Paraocular area moderately finely punctate (except finely punctate near clypeus); densely punctate below, sparser above (punctures limits somewhat ill-defined), sparsest towards antennal socket; interspaces imbricate throughout. Frontal area rugose. Vertexal area sparsely and finely punctate (except densely punctate ad- jacently to occipital area); interspaces rugulose. Mesoscutum moderately coarsely punctate; punctures dense laterally, sparser anteriorly, sparsest posteromedially; interspaces imbricate (except smooth posteromedially). Scutellum densely and moderately coarsely punctate (except punctures sparse anteriorly and crowded posteriorly); interspaces imbricate. Metanotum moderately densely and moderately coarsely punctate; interspaces imbricate. Mesepisternum moderately densely and moderately coarsely punctate (except densely punctate anterior to episternal groove and towards metepisternum); interspaces imbricate. Metepisternum with oblique carinae anteriorly; punctures difficult to discern from microareolate interspaces above and below. Lateral surface of propodeum moderately sparsely and moderately finely punctate; interspaces imbricate. Vertical surface of metapostnotum rugose above. Metasomal terga sparsely and minutely punctate (except T6 densely and moderately finely punctate); interspaces imbricate (except T1 disc smooth). Metasomal sterna with imbricate interspaces throughout; S1–S2 sparsely and finely punctate (except S1 minutely punctate posterolaterally); S3–S4 sparsely and minutely punctate; S5 moderately densely and finely punctate; S6 densely and finely punctate mid-longitudinally, sparsely and moderately finely punctate laterally.

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MALE: Unknown.

Type material: Holotype ♀ —“RPSP; 12.3948”.“ Brasil, RS, Santana do;Livramento. 30º52’23’’S; 55º31’42’’W, 200m. 03.xi.2012; E. Almeida & A. Aguiar, cols”. “CCDB-30344 E5”. “ HOLOTYPE; Colletes ferenudus ♀; Fer- rari, new species”. { RPSP}.

Paratypes: BRAZIL — Paraná: Guarapuava , 8/ix/1955, [C. Michener], 1♀, { SEMC }. Rio Grande do Sul: 12km NNE of Pedras Altas , (-31.6566, -53.5377), 2/xi/2012, [Almeida & Aguiar], 1♀, { RPSP }. Caçapava do Sul, Minas do Camaquã , 27/x/2009, [Schlindwein], 1♀, { UFMG }. Santana do Livramento , (-30.8730, -55.5283), 3/ xi/2012, [Almeida & Aguiar], 4♀♀, { RPSP }.

Range: BRAZIL (Paraná, Rio Grande do Sul). See also Fig. 14 .

Biogeographical distribution: Chacoan dominion (Pampean province), and Parana dominion ( Araucaria Forest province) at altitudes of 0–500m a.s.l.

DNA barcode: Available. BOLD: ACV1831 (4♀♀). Distance from the nearest neighbour ( C. distinctus Cresson, 1868 ): 8.10–8.27%.

Floral hosts: Loasaceae— Blumenbachia insignis Schrad.

Etymology: From the Latin words “fere” (nearly) and “nudum” (bare) in allusion to the species’ metasoma that is very sparsely hairy.

Comments: Apparently a rare species which is only known from southern Brazil.

Figures

FIGURE 13. Colletes ferenudus n. sp. Female: (A) habitus, dorsal view (B); face, frontal view; (C) habitus, lateral view. Scale bars = 1mm.

FIGURE 14. Geographical distribution of Colletes ferenudus n. sp. (blue diamonds), and C. petropolitanus (red circles). Scale bar approximately 250km.