Colletes chicoi 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 : 18-21

Colletes chicoi Ferrari , new species

( Figs. 7 , 8 , 9 , 55A )

Diagnosis: The male of C. chicoi n. sp. (the female is unknown) can be diagnosed through the combination of F1 relatively short (0.8x as long as its apical width), legs mostly pale-brown, and T1 pale-brown anteriorly. It is most similar to male C. sertanicola n. sp. as they are unique in having pale legs and brownish T1–T2 discs. However, these species can be distinguished from each other by the comparatively shorter F1, 0.8x as long as its apical width, in C. chicoi n. sp. (F1 1.1x as long as its apical width in C. sertanicola n. sp.); mesoscutum densely punctate an- teriorly in C. chicoi n. sp. (mesoscutum sparsely punctate anteriorly in C. sertanicola n. sp.); and T1 pale-brown anteriorly in C. chicoi n. sp. (T1 dark-brown anteriorly in C. sertanicola n. sp.).

Description: FEMALE: Unknown.

MALE ( Figs. 8 A–C): Dimensions (mm): Approximate body length 7.9; head width 2.5; head length 1.9; intertegular distance 1.7; forewing length 5.9.

Colouration: Black except legs (except coxae, trochanters, front tibia, mid femur, dorsal surface of front and mid tibiae dark-brown), tegula, T1 anteriorly, ventrally reflexed lateral areas of T1–T2, S1–S2, S3 anteriorly palebrown. Mandible (except tip reddish-brown), flagellum (except ventral surface of F2–F7 pale-brown), vein R of forewing, T1–T2 discs, S3 disc dark-brown. Wing venation, stigma, tibial spurs, marginal zones of T1–T6 and S2–S5 pale-yellow.

Structure: Labrum medially concave; concavity margined laterally by longitudinal ridges. Clypeal mid-longitudinal area shallowly depressed throughout; depression narrowest (0.7x MOD) above, progressively broader towards lower margin (maximum breadth 2x MOD). Malar area ~1.2x as long as basal depth of mandible (39:32). Hypostomal carina short and flat. F1 ~0.8x as long as its apical width (23:28). UID:LID (54:42). Frontal area without protrusion below lateral ocellus. Vertexal area concave behind 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 (31:32); metapostnotal pits well-delimited; posterior transverse carina straight and complete. Posteromedial surface of front coxa without spine. Posterior hind tibial spur ciliate. Hind basitarsus ~4.3x longer than broad (48:11). Outer rami of hind tarsal claws ~1.3x as long as inner rami (12:9). Marginal zone of T1 flat. Marginal zone of S6 not depressed. S7, S8 and genital capsule as in Figs. 9A, 9B, 9C , respectively.

Pubescence: Pale-yellow throughout. Head with plumose, erect, moderately long hairs; except mandible with moderately short setae along condylar groove; paraocular area with suberect, short hairs adjacently to inner margin of eye; interantennal, vertexal and genal areas with long hairs. Mesosoma with plumose, erect, long hairs; except pronotal lobe and scutellum with moderately long hairs; lateral surface of propodeum with very long hairs near upper margin. Legs with erect, moderately short setae; except trochanters and femora with plumose hairs; front and mid tibiae with appressed, short setae on anterodorsal surface; front and mid basitarsi with moderately long setae on posterior margin (longer on hid basitarsus). Metasomal terga and sterna covered with suberect, minute setae on discs; except T1 and S1 with plumose, erect hairs (long on T1, shorter on S1); T2 and S2 with setae and plumose hairs intermingled; T6 and S5–S6 with moderately short setae posteriorly; marginal zones of T1–T5 covered with a broad band of plumose, appressed, short hairs; marginal zones of S1–S5 with a transverse line of plumose, appressed, short hairs.

Surface sculpture: Clypeus densely and moderately finely punctate on mid-longitudinal depression (except sparsely punctate below); densely and finely punctate on lateral slopes and above; convex area largely impunctate; interspaces smooth throughout. Supraclypeal area densely and moderately coarsely punctate; interspaces rugulose. Malar area with coalescent, moderately coarse punctures. Paraocular area densely punctate; moderately finely punctate below, punctures slightly coarser above; interspaces smooth throughout. Frontal area punctures crowded and moderately coarse. Vertexal area densely and finely punctate; fine punctures intermingled with coarser punctures towards occipital area; interspaces smooth. Mesosomal with smooth interspaces, except when stated otherwise. Mesoscutum moderately densely and coarsely punctate (except densely and finely punctate anterolaterally and sparsely punctate posteromedially). Scutellum densely and coarsely punctate (except punctures sparse anteriorly). Metanotum densely and moderately coarsely punctate. Mesepisternum coarsely punctate; densely punctate anterior to episternal groove and below scrobe; sparsely punctate towards ventral surface. Metepisternum rugose mid-anteriorly; sparsely and moderately finely punctate above (interspaces rugulose) and below (interspaces imbricate). Lateral surface of propodeum sparsely and moderately finely punctate (except densely punctate anteriorly); interspaces imbricate. Vertical surface of metapostnotum smooth above. Metasomal terga with smooth interspaces throughout. T1 moderately densely punctate; disc with fine and moderately fine punctures intermingled. T2–T5 densely and minutely punctate (T2 with fine and minute punctures intermingled). T6 densely and finely punctate. Metasoma sterna with imbricate interspaces throughout. S1 sparsely and minutely punctate. S2–S5 moderately densely and minutely punctate (except punctures sparse mid-longitudinally). S6 sparsely and finely punctate.

Type material: Holotype Ƌ —“RPSP; 17.1010”. “ Brasil Pará; Cachimbo ; 19 agosto 1979 ”. “2360”. “ M.J.G Hopkins; H.C. Hopkins ”. “ HOLOTYPE; Colletes chicoi ♁; Ferrari, new species”. { RPSP}.

Paratypes: BRAZIL — Mato Grosso: Roadside, (-12.8333, -51.7833), 18/iii/1968, [O. Richards], 1♁, { NHMUK }. Pará: Serra do Cachimbo , 22/viii/1979, [Hopkins & Hopkins], 1♁, { RPSP}. Range : BRAZIL (Mato Grosso and Pará). See also Fig. 7 . Biogeographical distribution: South-eastern Amazonian dominion ( Xingu-Tapajós province ), and Chacoan dominion (Cerrado province) at altitudes of 300–600m a.s.l. DNA barcode: Unavailable. Floral hosts: Unknown. Etymology: This species is named in honour of Francisco Alves Mendes Filho (1944–1988), better known as Chico Mendes, a Brazilian environmentalist who dedicated his life to the conservation of the Amazon rainforest. Comments: Seemingly a rare species that appears to be associated with the Amazon-Cerrado ecotone in central Brazil .

Figures

FIGURE 7. Geographical distribution of Colletes argentinus (blue circles), and C. chicoi n. sp. (red stars). Scale bar approxi- mately 250km.

FIGURE 8. Colletes chicoi n. sp. Male: (A) habitus, dorsal view (B); face, frontal view; (C) habitus, lateral view. Scale bars = 1mm.

FIGURE 9. Dorsal view of the male terminalia of Colletes chicoi n. sp. (A) S7; (B) S8; (C) genital capsule. Scale bars = mm.

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.