Colletes hawkingi 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 : 36-37

Colletes hawkingi Ferrari , new species

( Figs. 20 , 21 , 22 , 57A )

Diagnosis: Amongst the Colletes species found in Brazil, C. hawkingi n. sp. can be diagnosed through the combination of very short malar area, ~0.2/~0.4x (♀ /♁) as long as basal depth of mandible, and legs with pale-yellow setae. The female of C. hawkingi n. sp. is most similar to that of C. imbricatus n. sp. (the male of the latter is unknown) as in both the mesosoma is covered with pale pubescence and the posterior hind tibial spur is pectinate. However, their females can be easily distinguished from each other by malar area ~0.2x as long as basal depth of mandible in C. hawkingi n. sp. (malar area subequal in length to depth of mandible in C. imbricatus n. sp.), and clypeus densely punctate with striate interspaces in C. hawkingi n. sp. (clypeus sparsely punctate with imbricate interspaces in C. imbricatus n. sp.).

Description: FEMALE ( Figs. 20A, 20C, 20E ):

Dimensions (mm): Approximate body length 9.2; head width 3.0; head length 2.2; intertegular distance 2.5; forewing length 7.1.

Colouration: Black except mandible (except distal 1/3 marked on dark-yellow), labrum reddish-brown. Ventral surface of F3–F10 dark-orange. Tegula, tibial spurs, distal half of tarsal claws pale-orange. Legs (except dorsal surface of mediotarsi 3 and distitarsi pale-brown), ventrally reflexed lateral areas of T1–T4, discs of S2–S3, S6 posterolaterally dark-brown. Wing venation (except veins C and R of forewing dark-brown and black), stigma, proximal half of tarsal claws pale-brown. Tibial spurs, marginal zones of metasomal sterna pale-yellow.

Structure: Labrum medially concave; concavity not margined laterally by longitudinal ridges. Clypeal midlongitudinal area not depressed. Malar area ~0.2x as long as basal depth of mandible (14:59). Hypostomal carina short and flat. F1 subequal in length to its apical width (28:29). UID:LID (57:51). 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 (28:46); metapostnotal pits well-delimited; posterior transverse carina straight and complete. Posteromedial surface of front coxa with weak spine. Posterior hind tibial spur pectinate. Hind basitarsus ~3.2x longer than broad (52:16). Outer rami of hind tarsal claws 1.8x as long as inner rami (18:10). Marginal zone of T1 flat. Marginal zone of S6 depressed.

Pubescence: Head with pale-yellow, plumose, suberect, moderately long hairs; except mandible and clypeal subapical pits with setae; interantennal and upper paraocular areas with erect hairs; vertexal area (near occipital area) and genal area (towards proboscidial area) with long hairs. Mesosoma with bright-orange, plumose, erect, moderately long hairs; except mesepisternum and metepisternum with off-white, long hairs; upper margin of lateral surface of propodeum with very long hairs. Legs with pale-yellow hairs (except femoral and tibial scopae with fuscous hairs); trochanters and femora with plumose, erect, long hairs; front and mid tibiae with suberect, short setae (except posterodorsal surface with erect, moderately short setae); hind tibia and basitarsi with erect, moderately long setae (except posterior margin of mid basitarsus and hind tibia and basitarsus with long setae). T1 disc with pale-yellow, plumose, erect, long hairs; T2–T5 discs with pale-yellow, suberect, minute setae (T4–T5 also with fuscous, erect, long setae); T1–T5 marginal zones covered with off-white, plumose, appressed, short hairs; T6 with pale-yellow, suberect, moderately short setae throughout. Metasomal sterna with pale-yellow hairs throughout; S1 with plumose, erect, moderately long hairs; S2–S5 discs with erect, moderately short setae (such setae minute anteriorly and mid-longitudinally); S1–S5 marginal zones with a line of plumose, suberect, moderately long hairs; S6 with moderately short setae throughout, these setae suberect anteriorly, erect towards posterior margin.

Surface sculpture: Clypeus moderately coarsely punctate; punctures ill-defined and coalescent; interspaces striate. Supraclypeal area sparsely and moderately coarsely punctate on disc; lateral slopes densely punctate; interspac- es rugulose throughout. Malar area substrigulate. Paraocular area densely and moderately finely punctate (except slightly coarser towards antennal socket); punctures below ill-defined; interspaces rugulose. Frontal area densely and moderately coarsely punctate; interspaces rugulose. Vertexal area densely and finely punctate near lateral ocellus; minutely punctate elsewhere; interspaces smooth throughout. Mesoscutum and scutellum densely and coarsely punctate (except mesoscutum moderately coarsely punctate anterolaterally and sparsely punctate posteromedially, and scutellum with punctures crowded and moderately fine posteriorly); interspaces smooth. Metanotum punctures crowded and moderately coarse; interspaces rugose. Mesepisternum densely and coarsely punctate (except punctures finer towards ventral surface and posteriorly); interspaces smooth. Metepisternum with oblique carinae mid-anteriorly; rugose above; densely and moderately coarsely punctate below. Lateral surface of propodeum moderately finely punctate; sparsely punctate below; densely punctate above; interspaces smooth. Vertical surface of metapostnotum with transverse carina above. Metasomal terga with smooth interspaces throughout; T1–T4 minutely punctate, T1 sparsely punctate, T2–T4 moderately densely punctate; T5 densely and finely punctate; T6 punctures crowded and moderately fine. Metasomal sterna with imbricate interspaces throughout; S2–S5 moderately densely and finely punctate (except S5 densely punctate); S6 densely and moderately finely punctate, punctures limits difficult to tell apart.

MALE ( Figs. 20B, 20D, 20F ). As in female, except for usual secondary sexual characteristics and as follows:

Dimensions (mm): Approximate body length 8.4; head width 2.7; head length 2.0; intertegular distance 2.2; forewing length 6.4.

Colouration: Mandible medially dark-orange. Ventral surface of F2 –F11, mid basitarsus and mediotarsi 1–2, discs of S2–S3, S6 pale-brown. Discs of T3–T6 dark-brown.

Structure: Malar area ~0.4x as long as basal depth of mandible (24:53). F1 0.8x as long as its apical width (25:33). UID:LID (56:45). Dorsolateral angle of pronotum modified as a long spine. Horizontal surface of metapostnotum ~0.7x as long as metanotum (31:46); posterior transverse carina somewhat sinuous. Posteromedial surface of front coxa without spine. Posterior hind tibial spur ciliate. Hind basitarsus ~3.4x longer than broad (5:16). Outer rami of hind tarsal claws ~1.2x as long as inner rami (10:8). Marginal zone of S6 not depressed. S7, S8 and genital capsule as in Figs. 21A, 21B, 21C , respectively.

Pubescence: Head with bright-yellow pubescence; clypeal subapical pits with plumose hairs; facial hairs longer than those on vertexal area. Mesosoma dorsally covered with bright-yellow, long hairs; mesepisternum and metepisternum with pale-yellow hairs. Metasomal terga with pale-yellow appressed hairs on marginal zones. S2 disc with plumose hairs. S2–S5 with broader bands of appressed hairs medially. S6 with suberect setae throughout.

Surface sculpture: Clypeus densely and moderately finely punctate; punctures well-delimited above, coalescent below. Supraclypeal area punctures crowded and fine; interspaces rugose. Mesepisternum moderately sparsely punctate towards ventral surface. Vertical surface of metapostnotum with transverse carina above. T1–T3 moderately finely punctate. T3–T4 finely punctate. T4–T5 with imbricate interspaces. S6 finely punctate.

Type material: Holotype ♀ — “CHÃ GRANDE, PE; Brasil, 4.11.2001; Milet & Pinto da Silva ”. “L127 coletado no; vidro 13:00”. “7315 UFPE”. “ Colletes sp. (PE atual); A 1137; Schlindwein det. 2003”. “CCDB-30344 G5”. “ HOLOTYPE; Colletes hawkingi ♀; Ferrari, new species”. { UFMG}.

Paratypes: BRAZIL — Ceará: Santana do Cariri, Chapada do Araripe , 8/ii/2001, [A. Carvalho], 1♀, { UFMG }.

Pernambuco: Chã Grande , 30/ix/2001, [Milet & Morais], 1♁, { UFMG }.

Range: BRAZIL (Ceará, Pernambuco). See also Fig. 22 .

Biogeographical distribution: Chacoan dominion (Caatinga province), and Parana dominion (Atlantic province) at altitudes of 400–800m a.s.l.

DNA barcode: A non-BIN-compliant sequence (422 bp) is available for one female specimen (CCDB-30383- D05).

Floral hosts: Unknown.

Etymology: Species named after the astrophysicist Stephen W. Hawking (1942–2018), one of the most brilliant minds of all times.

Comments: Rare species that appears to be endemic to northeastern Brazil, although it is known from two different ecoregions there—the Atlantic rainforest and the Caatinga.

Figures

FIGURE 20. Colletes hawkingi 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 21. Dorsal view of the male terminalia of Colletes hawkingi n. sp. (A) S7; (B) S8; (C) genital capsule. Scale bars = 1mm.

FIGURE 22. Geographical range of Colletes hawkingi n. sp. (red stars), and C. meridionalis (blue circles). Scale bar approxi- mately 250km.

FIGURE 57. Dorsal view of metasoma. (A) T1 sparsely punctate in Colletes hawkingi n. sp.; (B) T1 moderately densely punc- tate in C. meridionalis. Scale bars = 1mm.