Colletes sertanicola 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 : 73-74

Colletes sertanicola Ferrari , new species

( Figs. 12 , 42, 43, 55B )

Diagnosis: Colletes sertanicola n. sp. can be readily diagnosed by the combination of F1 relatively long, 1.3/1.1x (♀ /♁) as long as its apical width, and T1–T2 pale-brown (except T1–T2 dark-brown anteriorly in the male). The male of Colletes sertanicola n. sp. is most similar to that of C. chicoi n. sp. (the female of the latter is unknown) as both possess pale legs and brownish T1–T2. However, they can be distinguished from each other by the comparatively longer F1, 1.1x as long as its apical width, in C. sertanicola n. sp. (F1 0.8x as long as its apical width in C. chicoi n. sp.); mesoscutum sparsely punctate anteriorly in C. sertanicola n. sp. (mesoscutum densely punctate anteriorly in C. chicoi n. sp.); T1 dark-brown anteriorly in C. sertanicola n. sp. (T1 pale-brown anteriorly in C. chicoi n. sp.).

Description: FEMALE ( Figs. 42A, 42C, 42E ):

Dimensions (mm): Approximate body length 7.5; head width 2.6; head length 2.1; intertegular distance 1.9; forewing length 6.3.

Colouration: Black except legs (except front and mid trochanters and front femur dark-brown dorso-posteriorly, distitarsi pale-yellow dorsally), wing venation (except vein R of forewing dark-brown), metasoma (marginal zones of terga and S6 laterally marked with dark-brown) pale-brown. Mandible (except distal 1/3 reddish-brown), distal half of tarsal claws dark-orange. Ventral surface of F2–F10 dark-brown. Tegula, stigma (except margins darkbrown), tibial spurs, proximal half of tarsal claws pale-yellow.

Structure: Labrum medially convex; convexity margined laterally by longitudinal ridges. Clypeal mid-longitudinal area deeply and moderately narrowly (0.6x MOD) depressed on upper 2/3; depression much shallower and broader (maximum width 1.5x MOD) below. Malar area ~1.3x as long as basal depth of mandible (38:29). Hypostomal carina short and flat. F1 ~1.3x as long as its apical width (31:24). UID:LID (50:44). Frontal area without protrusion below lateral ocellus. Vertexal area concave near upper summit of eye in postero-lateral view. Dorsolateral angle of pronotum modified as a long spine. Mesepisternum ventrally, near ventral end of episternal groove, without protrusion surrounded by appressed hairs. Horizontal surface of metapostnotum subequal in length to metanotum (23:24); metapostnotal pits well-delimited; posterior transverse carina straight and incomplete. Posteromedial surface of front coxa with strong spine. Posterior hind tibial spur ciliate. Hind basitarsus ~3.6x longer than broad (51:14). Outer rami of hind tarsal claws 2.5x as long as inner rami (10:4). Marginal zone of T1 flat. Marginal zone of S6 depressed.

Pubescence: Head with off-white, plumose, erect, moderately long hairs; except clypeal mid-longitudinal depression and lateral slopes and paraocular area (adjacently to outer margin of eye) with suberect hairs; paraocular, interocellar and vertexal areas with off-white and fuscous hairs intermixed. Mesosoma with pale-yellow, plumose, erect, moderately long hairs; except pronotal lobes and mesoscutum with moderately short hairs; scutellum with pale-yellow and fuscous hairs intermixed posteriorly; mesepisternum with off-white, long hairs; lateral surface of propodeum with appressed hairs on disc. Legs with pale-yellow hairs; except trochanters and femora with off-white, plumose, long hairs; femoral and tibial scopae with branched apically only, suberect, very long hairs anteriorly; front and mid tibiae with suberect, short setae (except posterior surface with erect setae); hind tibia and basitarsi with erect, moderately short setae (except posterior margins of front and mid basitarsi with long setae, hind basitarsus with very long setae). Metasoma terga covered with pale-yellow, appressed, plumose, short hairs; except T6 black, erect, moderately long setae; T1 with erect, plumose, long hairs; T4–T5 with black, erect, moderately short setae on discs (those setae pale-yellow and longer laterally). Metasoma sterna with pale-yellow hairs throughout; S1 with plumose, erect, moderately long hairs; S2 with erect, moderately short, branched only apically hairs; S3–S6 discs covered with erect, short setae (except S4–S5 with moderately long setae adjacently to marginal zones; S1–S5 marginal zones with a line of plumose, suberect, moderately short hairs.

Surface sculpture: Clypeal mid-longitudinal depression densely and finely punctate; adjacent convex area smooth (except lower transverse band finely longitudinally striate). Supraclypeal area sparsely and finely punctate; interspaces imbricate. Malar area sparsely and moderately finely punctate; punctures ill-defined and coalescent towards eye; interspaces smooth (except imbricate near mandible). Paraocular area densely and moderately finely punctate (except juxtantennal area sparsely punctate); interspaces smooth below, imbricate above. Frontal area densely and moderately coarsely punctate; interspaces rugulose. Vertexal area densely punctate anteriorly, more sparsely punctate towards occipital area; punctures minute near eye, punctures coarser near lateral ocellus; interspaces smooth throughout. Mesoscutum coarsely punctate; punctures moderately dense anterolaterally and sparse posteromedially; interspaces smooth throughout. Scutellum moderately densely and coarsely punctate (except punctures sparse mid-longitudinally); interspaces smooth. Metanotum moderately densely and moderately coarsely punctate; interspaces imbricate. Mesepisternum sparsely and coarsely punctate (except densely punctate anterior to episternal groove and below scrobe); interspaces smooth (except imbricate anterior to episternal groove). Metepisternum finely and obliquely striate anteriorly; sparsely and moderately finely punctate above and below (interspaces imbricate). Lateral surface of propodeum sparsely and moderately finely punctate; interspaces rugulose. Vertical surface of metapostnotum imbricate above. Metasomal terga with smooth interspaces throughout; T1 sparsely and finely punctate; T2–T6 minutely punctate. Metasomal sterna with imbricate interspaces throughout; S1 minutely punctate; S2–S5 moderately densely and finely punctate (except punctures sparse mid-longitudinally); S6 densely and moderately finely punctate posterolaterally, impunctate elsewhere.

MALE ( Figs. 42B, 42D, 42F ). As in female, except for usual secondary sexual characteristics and as follows:

Dimensions (mm): Approximate body length 6.3; head width 2.4; head length 1.9; intertegular distance 1.7; forewing length 5.8.

Colouration: Front and mid femora, dorsal surface of tibiae dark-brown. Dorsal surface of tarsi pale-yellow. T1–T2 anteriorly dark-brown. T3–T6 discs black.

Structure: Clypeal mid-longitudinal area deeply and narrowly (0.4x MOD) depressed above; depression progressively shallower and broader (maximum width 1.3x MOD) towards lower margin. Malar area ~1.7x as long as basal depth of mandible (42:24). F1 ~1.1x as long as its apical width (27:24). UID:LID (61:48). Dorsolateral angle of pronotum pointed. Horizontal surface of metapostnotum subequal in length to metanotum (23:24); metapostnotal pits well-delimited; posterior transverse carina sinuous. Posteromedial surface of front coxa with weak spine. Hind basitarsus 4.4x longer than broad (44:11). Outer rami of hind tarsal claws 2.5x as long as inner rami (14:10). Marginal zone of S6 depressed. S7, S8 and genital capsule as in Figs. 43A, 43B, 43C , respectively.

Pubescence: Head with pale-yellow hairs (except paraocular, interocellar and vertexal areas with fuscous and pale-yellow hairs intermixed). Scutellum with pale-yellow hairs throughout. Lateral surface of propodeum with long, erect hairs. Appressed hairs on metasomal terga restricted to marginal zones. T6 covered with pale-yellow setae. S2 with plumose hairs. S5–S6 with moderately long setae on discs.

Surface sculpture: Supraclypeal area with rugulose interspaces. Frontal area punctures crowded. Vertexal area densely punctate throughout. Scutellum sparsely punctate. Metepisternum with rugulose interspaces above. Vertical surface of metapostnotum rugulose above. T1 moderately densely punctate; moderately fine and minute punctures intermingled throughout; T2–T4 densely and moderately finely punctate (T2 with imbricate interspaces anteriorly); T5 punctures ill-defined and difficult to discern from rugulose interspaces. S2–S6 sparsely and finely punctate.

Type material: Holotype ♀ —“Monte Santo, BA; Col. 20/i/2000; Emg 8/iv/2000; N: b24 Aprisco”. “ Colletes sp; DET. Zanella 2002”. “412”. “MZUEFS; #27148”. “CCDC-30383 C06”. “ HOLOTYPE; Colletes sertanicola ♀; Ferrari, new species”. { MZUEFS}.

Paratypes: BRAZIL — Bahia: Monte Santo , 13/i/2000, 1♁, { MZUEFS }.

Range: BRAZIL (Bahia). See also Fig. 12 .

Biogeographical distribution: Chacoan dominion (Cerrado province) at altitudes of 300–600m a.s.l.

DNA barcode: Unavailable.

Floral hosts: Unknown.

Etymology: This species is named after the “sertṳo nordestino”, an important region in the Brazilian northeast where the type locality is located.

Comments: Seemingly a rare species which is only known to me by two specimens.

Part of the holotype’s head (specially the genal and occipital areas) as well as its pronotum and anterior mesoscutal area are covered with white glue. Otherwise the specimen is in good condition.

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 42. Colletes sertanicola 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 43. Dorsal view of the male terminalia of Colletes sertanicola n. sp. (A) S7; (B) S8; (C) genital capsule. Scale bars = 1mm.

FIGURE 55. Dorsal view of metasoma. (A) T1 pale-brown anteriorly in Colletes chicoi n. sp.; (B) T1 dark-brown anteriorly in C. sertanicola n. sp.; (C) T1 black anteriorly in C. meridionalis. Scale bars = 1mm.