Colletes flagellaris 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 : 28-31

Colletes flagellaris Ferrari , new species

( Figs. 12 , 15, 16, 51A)

Diagnosis: Both sexes of C. flagellaris n. sp. can be diagnosed through the combination of labrum black, flat and without ridges; mesosoma with pale-orange hairs; and T2–T5 covered with pale-yellow, short, appressed hairs. Colletes flagellaris n. sp. is most similar to C. rufipes as both have labrum flat, and T2–T5 covered with appressed hairs. However, these species can be differentiated from each other by labrum black in C. flagellaris n. sp. (labrum reddish-brown in C. rufipes ); F1 relatively long, 1.9/1.3x (♀ /♁) as long as its apical width, in C. flagellaris n. sp. (F1 1.4/1.1x (♀ /♁) as long as its apical width in C. rufipes ); and legs black in C. flagellaris n. sp. (legs dark-orange in C. rufipes ).

Description: FEMALE ( Figs. 15A, 15C, 15E ):

Dimensions (mm): Approximate body length 10.3; head width 3.7; head length 3.0; intertegular distance 2.9; forewing length 8.4.

Colouration: Black except distal half of mandible, S6 posteriorly reddish brown. Ventral surface of F2–F10, dorsal surface of distitarsi, ventrally reflexed lateral area of T1, S2–S5 mid-longitudinally and posteriorly darkbrown. Tegula, wing venation (except forewing veins C, R1, 2r-m and 2m-cu pale-brown and vein R black), tarsal claws (except proximal half pale-brown) pale-orange. Tibial spurs, marginal zones of S1–S5 pale-yellow.

Structure: Labrum medially flat and lacking longitudinal ridges. Clypeal mid-longitudinal area very shallowly depressed throughout; depression relatively narrow (0.6x MOD) above; depression progressively broader (maximum width 1.4x MOD) towards lower margin. Malar area 1.4x as long as basal depth of mandible (49:35). Hypostomal carina short and flat. F1 ~1.9x as long as its apical width (37:20). UID:LID (73:67). 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 ~0.6x as long as metanotum (32:54); metapostnotal pits well-delimited; posterior transverse carina sinuous and complete. Posteromedial surface of front coxa without spine. Posterior hind tibial spur ciliate. Hind basitarsus ~3.3x longer than broad (56:17). Outer rami of hind tarsal claws ~4.2x as long as inner rami (17:4). Marginal zone of T1 flat. Marginal zone of S6 not depressed.

Pubescence: Head with pale-yellow, plumose, erect, moderately long hairs; except mandible with moderately long setae; clypeal lateral slopes and lower paraocular area with suberect hairs; paraocular, vertexal and frontal areas with pale-yellow and black hairs intermixed; vertexal area with black, long hairs near occipital hairs; genal area with off-white and fuscous hairs intermixed adjacently to outer margin of eye and very long hairs towards proboscidial area. Mesosoma with pale-orange, plumose, erect, long hairs; except those hairs shorter on mesoscutum, shortest on pronotal lobe; pronotal lobe, mesoscutal disc, scutellum and metanotum anteriorly with pale-orange and fuscous hairs intermixed; lateral surface of propodeum with appressed, moderately short hairs posteriorly and erect, very long hairs on upper margin. Legs with pale-yellow, erect, long hairs on trochanters and femur (except front femur with pale-yellow and fuscous hairs intermixed ventrally); femoral and tibial scopae with branched apically only, suberect, very long hairs anteriorly; tibiae with fuscous, erect, moderately long setae (except front tibia with suberect, short setae dorsally and hind tibia with pale-yellow setae ventrally); basitarsi with fuscous, erect, moderately short setae (those setae pale-yellow on ventral surfaces and long on posterior margins). Metasoma terga (except T6) covered with bright-yellow, plumose, appressed, short hairs; T1 also with pale-yellow, plumose, erect, long hairs on disc; those hairs short on T2; T3–T5 also with black, erect, short setae (those setae moderately long laterally); T6 covered with black, suberect, moderately short setae throughout. Metasomal sterna with pale-yellow hairs (except S5 posteriorly and S6 with fuscous hairs); S1–S2 with plumose, erect, moderately long hairs; S3–S5 discs with erect, short setae (except S5 with moderately short setae posteriorly); S2–S4 marginal zones with a transverse line of plumose, suberect, moderately short hairs; S6 with erect, short setae distributed mid-longitudinally.

Surface sculpture: Clypeus sparsely and moderately finely punctate (except mid-longitudinal depression moderately densely punctate); interspaces smooth (except substrigulate below). Supraclypeal area imbricate. Malar area longitudinally finely striate on upper 3/4, substrigulate on lower 1/4. Paraocular area densely and moderately finely punctate (except punctures crowded and fine near eye and coarse towards clypeus); interspaces smooth below, imbricate above. Frontal area densely and moderately coarsely punctate; interspaces imbricate. Vertexal area densely and moderately finely punctate near lateral ocellus; those punctures sparser and intermingled with minute punctures near eye; interspaces smooth. Mesoscutum densely and moderately coarsely punctate (except punctures moderately dense and coarse posteromedially); interspaces smooth. Scutellum densely and coarsely punctate (except punctures crowded laterally and posteriorly); interspaces smooth (except rugulose posteriorly). Metanotum punctures crowd- ed and moderately coarse. Mesepisternum densely and coarsely punctate anteriorly do episternal groove and below scrobe; sparsely and moderately coarsely towards ventral surface; interspaces smooth. Metepisternum with oblique carinae mid-anteriorly; rugose above; densely and moderately coarsely punctate below (interspaces rugulose). Lateral surface of propodeum sparsely and moderately finely punctate (except densely punctate above and posteriorly); interspaces smooth. Vertical surface of metapostnotum rugose above. Metasomal terga with smooth interspaces throughout. T1–T5 sparsely and minutely punctate. T6 moderately densely and finely punctate. Metasomal sterna with imbricate interspaces (except S6 rugulose posteriorly). S1–S4 finely punctate; S1 sparsely punctate throughout, S2–S4 moderately densely punctate (except punctures sparse mid-longitudinally). S5 more evenly densely punctate. S6 densely and moderately coarsely punctate (except punctures minute mid-longitudinally); punctures poorly defined posterolaterally.

MALE ( Figs. 15B, 15D, 15F ). As in female, except for usual secondary sexual characteristics and as follows:

Dimensions (mm): Approximate body length 9.1; head width 3.4; head length 2.8; intertegular distance 2.6; forewing length 7.5.

Colouration: Reddish-brown spot on mandible restricted to distal 1/3. Ventral surface of F3–F6 dark-orange. Distal ring of tibiae and dorsal surface of tarsi dark-brown (except dorsal surface of distitarsi pale-brown). Marginal zones of T1–T6 pale-yellow. S2–S5 mid-longitudinally black. S6 entirely black.

Structure: Clypeal mid-longitudinal area very deeply and relatively narrowly (0.7x MOD) depressed above; depression much shallower and broader (1.3x MOD) below. Malar area ~2.5x as long as basal depth of mandible (51:20). F1 1.3x as long as its apical width (26:20). UID:LID (72:60). Horizontal surface of metapostnotum ~0.5x as long as metanotum (19:36); posterior transverse carina incomplete. Hind basitarsus ~3.9x longer than broad (47:12). Outer rami of hind tarsal claws 2.1x as long as inner rami (21:10). S7, S8 and genital capsule as in Figs. 16A, 16B, 16C , respectively.

Pubescence: Paraocular area with erect hairs only. Vertexal area with black, very long hairs throughout. Mesosomal fulvous hairs restricted to mesoscutum. Pronotal lobe and mesoscutum hairs as long as those of scutellum. Lateral surface of propodeum with only erect hairs throughout. Basitarsi with pale-yellow setae. Setae on T4–T5 discs and laterally evenly long. T6 with pale-yellow, plumose, appressed, short hairs amongst fuscous, erect, moderately short setae. S3 disc with plumose hairs and setae intermixed. S5 setae pale-yellow throughout. S6 with plumose hairs posteromedially; setae evenly distributed on disc.

Surface sculpture: Clypeus finely punctate; interspaces smooth (except substrigulate lower-laterally). Supraclypeal area densely and moderately coarsely punctate. Paraocular area evenly densely punctate. Frontal area punctures crowded. Vertexal area punctures crowded and moderately fine throughout. Lateral surface of propodeum moderately densely punctate centrally; interspaces imbricate. T1 densely and moderately finely punctate. T2–T3 densely and finely punctate. S2 sparsely punctate. S4–S5 minutely punctate anteriorly; punctures coarse towards marginal zones. S6 moderately densely and finely punctate on disc; punctures coarse posteriorly.

Type material: Holotype ♀ —“ Abelhas Altimontanas ; ParNa do Itatiaia; 12841-37950”. “Itatiaia RJ; BRASIL 16/03/2007; A. A.Azevedo ”. “ Colletes rufipes ♀; Smith, 1879; R.R.Ferrari, det. 2011”. “CCDB-22009; E05”. “HO- LOTYPE; Colletes flagellaris ♀; Ferrari, new species”. { UFMG}.

Paratypes: BRAZIL — Rio de Janeiro: Itatiaia, Parque Nacional do Itatiaia , 16/iii/2007, [A. Azevedo], 3♁♁, { UFMG }.

Range: BRAZIL (Rio de Janeiro). See also Fig. 12 .

Biogeographical distribution: Paraná dominion ( Atlantic forest province). Species seemingly associated with the Mantiqueira mountain range (southeastern Brazil) which highest point is located at 2798m a.s.l.

DNA barcode: A non-BIN-compliant sequence (248 bp) is available for one male specimen (CCDB-30383- D07).

Floral hosts: Unknown.

Etymology: Allusion to the fact that this species possesses very long F1.

Comments: Apparently a rare species.

The type series of C. flagellaris n. sp. had been misidentified as C. rufipes by me for the purpose of a previous study ( Ferrari & Silveira 2015). The two species are remarkably similar to each other, but they can be reasonably easily differentiated by the characters given at “Diagnosis” (above) and key (below).

Figures

FIGURE 12. Geographical distribution of Colletes cyaneus (green circles), C. flagellaris n. sp. (red diamond), and C. sertani- cola n. sp. (blue star). Scale bar approximately 250km.

FIGURE 15. Colletes flagellaris n. sp. 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 16. Dorsal view of the male terminalia of Colletes flagellaris n. sp. (A) S7; (B) S8; (C) genital capsule. Scale bars = 1mm.