Chilicola (Heteroediscelis) travesia Toro & Moldenke, 1979

Monckton, Spencer K., 2016, A revision of Chilicola (Heteroediscelis), a subgenus of xeromelissine bees (Hymenoptera, Colletidae) endemic to Chile: taxonomy, phylogeny, and biogeography, with descriptions of eight new species, ZooKeys 591, pp. 1-144 : 97-101

Taxon classification Animalia Hymenoptera Colletidae

Chilicola (Heteroediscelis) travesia Toro & Moldenke, 1979 Figs 1A; 2 A–B; 29 A–B; 30 A–B; 46 A–J; 49

Chilicola travesia Toro & Moldenke, 1979: 125-127 (male holotype, female allotype, AMNH [examined]). Packer 2008: 77. Montalva and Ruz 2010: 29 (checklist). Moure et al. 2012 (catalogue). Ascher and Pickering 2015 (checklist).

Diagnosis.

Males are separated - along with Chilicola erithropoda - by the tibiae and tarsi mostly or entirely yellow-orange, and differentiated from the latter by MOC equal to or greater than width of the head, and apical surface of S1 process longitudinally concave. Females are separated from all other species of the subgenus except Chilicola erithropoda by the combination of malar space less than 2/3 × as long as the clypeal lateral, metatibia expanded (>0.25 × as deep as long), and T3 with apicolateral patches of tomentum as on T1-T2. Females of Chilicola travesia are differentiated from those of Chilicola erithropoda by the metatibia mostly or entirely yellow (basal one-third and apical quarter at minimum) and the probasitarsus entirely yellow (sometimes suffused with yellow-brown at midlength on posterior surface) - both are mostly dark in the latter species.

Description.

Male. Length 5.3-5.8mm, forewing length 3.2-3.5mm, head width 1.2-1.3mm, thorax width 1.3mm, median ocellar diameter (OD) 0.13mm.

Colouration: Black-brown, following parts yellow: labrum; clypeus except narrowly dark at mid-length along epistomal suture and apex often translucent brown laterad; lower paraocular area, extending more than 1OD above transverse portion of epistomal suture medially and reaching lower tangent of antennal socket laterally; apicoventral surface on scape; ventral surface of pedicel, narrowing basally; ventral surface of flagellum; protrochanter apical rim posteriorly; apex of profemur broadly on anterior surface, narrowly on posterior surface; protibia; protarsus; broad apical ring on mesofemur; mesotibia, sometimes suffused with brown medioventrally; mesotarsus; apicoventral rim of metacoxa and metatrochanter; broad apical ring on metafemur; metatibia, sometimes suffused with brown mediodorsally; metabasitarsus, at least ventrally; apical half of metadistitarsus; anterior spot on tegula; apex of T7. Ventral and posterior metatibial carinae brown. Metasoma dark brown, T1-T6 marginal zones yellow-orange to translucent yellow at margins.

Pubescence: White, hairs generally short (0.5OD) and sparse, not especially plumose; on lower paraocular area and around antennal base moderately long and moderately dense (1OD); genal beard long and moderately dense (0.5-2OD) longest at midlength; mesoscutal hairs moderately long and sparse (1OD) denser toward lateral margin (0.5-1OD); discs of scutellum and metanotum mostly bare, few short hairs (0.5 OD), longer and denser toward lateral and posterior margins of scutellum (1-1.5OD) longest posteromedially, and toward lateral margin of metanotum (≤2OD); propodeal hairs moderately long and dense dorsolaterally (0.5-1.5OD); T1-T3 apicolateral patches of tomentum (0.5-1OD); S2 hairs moderately long and moderately sparse (1OD basolaterad, 0.5OD distilaterad, bare mesad).

Surface sculpture: Microsculpture imbricate, integument generally dull; punctures generally small and deep. Clypeus sparsely and irregularly puncture (i=1-3d); supraclypeal area moderately densely punctate (i=1-2d) densely punctate toward lateral margin (i≤d); lower paraocular area densely punctate (i=d); frontal area very densely punctate (i≤0.5d); ocellocular space moderately densely punctate adjacent to compound eye (i=1-2d) becoming impunctate adjacent to lateral ocellus; vertexal area moderately densely punctate (i=1-2d); scape shallowly and moderately densely punctate (i=1-2d) densely punctate apicoventrally (i≤d); genal area microstriate and moderately densely punctate (i=1-2d); hypostomal area weakly imbricate and densely punctate (i=d); pronotum and mesoscutum densely punctate (i=0.5-1d); scutellum moderately densely punctate (i=1-2d) punctures crowded around median (i≤d); mesepisternum irregularly punctate, sparse below scrobe and anterior of episternal groove (i=1-2d), impunctate just dorsad of scrobe, otherwise irregularly spaced on hypoepimeral area (i≤2d); metanotum densely punctate (i=0.5-2d) punctures crowded around median and anteriorly (i≤0.5d); metepisternum densely punctate (i≤d); metapostnotum rugose, minutely rugose posteriorly; propodeum coarsely imbricate and moderately densely punctate (i=1-2d); T1-T5 coarsely imbricate; T1-T4 moderately densely punctate (i≤2d); T5 moderately punctate-puncticulate (i=1-3d); T6 sparsely punctate-puncticulate (i≥2d) and coarsely imbricate posteriorly; T7 sparsely punctate-puncticulate (i≥2d); marginal zones of terga weakly imbricate and shiny, minutely punctate.

Structure: Labrum ~2.8 × wider than long (24:8.5); malar space ~0.6 × as long as clypeal lateral (4:7); LOT below anterior tentorial pits; clypeus ~1.1 × as long as maximum width in frontal view (35:31) extending for less than half of its length beyond LOT; clypeus median longitudinal groove absent or marked by a very weak depression; subantennal sutures ~1.3 × as long as the shortest distance between them (14:11); IAD ~1.6 × AOD (13:8); scape 2.4 × as long as maximum width (24:10); pedicel slightly shorter than wide (8:8.5); F1 shorter than wide (7:9); F2 slightly longer than F1 and shorter than F3 (F2:F3 - 7.5:10); UOD ~1.4 × LOD, IOD ~1.1 × UOD (UOD:IOD:LOD - 50:54:36); frontal line carinate in lower half, flat just below median ocellus for a length of ~0.5OD, otherwise roughly defined; MOC subequal to width of head (89:87); OOC ~0.5 × IOC (9:20); genal area ~0.6 × as wide as compound eye in lateral view (18:33); ratio of lengths of mesoscutum: scutellum: metanotum: metapostnotum - 61:25:11:14; probasitarsus 4 × as long as maximum depth (24:6); length of prodistitarsus ~0.7 × that of preceding three tarsomeres combined (from II to V - 7:6:5:13); metafemur ~1.67 × as long as maximum depth (60:36); summit of metatibial ventral convexity at approximately two-thirds tibial length; metatibia ~1.67 × as long as maximum depth (55:33); in apical view length apical lamina of metatibia short and thick, length 0.8 × OD (8:10); ventral metatibial carina bluntly toothed near midpoint and deeply concave apically, posterior carina absent basally and originating at level of tooth on ventral carina; metabasitarsus ~3.7 × as long as maximum depth (41:11); S1 process apical surface longitudinally concave, in lateral view anterior and posterior margins divergent apically and apex appearing strongly anteriorly bent. S7 apodemal arm sclerotized margin terminating laterally at arm midlength; ventral lobe ~0.25 × as broad as basal attached length; dorsal lobe strap-like, subparallel-sided and somewhat anteriorly curved, with row of setae long basally and shorter apically; apex of disc disinctly emarginate. S8 lateral process ~1.1 × wider than long, apicolateral margin distinctly concave, anteromedial margin variable, having either a distinct convex incursion and appearing swollen, or a sclerotized spot disjunct from margin (as in Fig. 38). Gonobase apicoventral truncate process biconvex and distinctly notched by a width less than one convexity.

Female. Length 4.9-5.5mm, forewing length 3.1-3.2mm, head width 1.1-1.2mm, thorax width 1.1-1.3mm, median ocellar diameter (OD) 0.11-0.12mm.

Colouration: Black to black-brown except as follows: labrum black to translucent yellow; mandible with yellow basal spot, otherwise translucent yellow with apex translucent brown; antenna variable (scape with yellow-brown apicoventral spot to entirely dark; apicoventral surface of pedicel yellow to brown; ventral surface of flagellum yellow, either narrowing basally on F1, or with apicoventral surface of F1 brown and narrowing basally on F2). Following parts yellow: protibia, sometimes dark medioventrally; protarsus; mesotibia, at least in basal quarter ventrally, basal one-third dorsally, and apical quarter; mesotarsus, at least basitarsus ventrally and apical half of distitarsus; broad apical ring on metafemur; metatibia, at least in basal one-third and apical quarter; metabasitarsus ventrally; apical half of metadistitarsus; anterior spot on tegula. Metasoma black, T1-T5 marginal zones yellow to translucent yellow at margins.

Pubescence: As in male except as follows: clypeal hairs short and sparse (0.5OD); genal beard sparse (0.5-1.5OD); discs of mesoscutum, scutellum, and metanotum with sparse short hairs (≤0.5OD) denser and as long or longer toward lateral margin as follows: mesoscutum (≤0.5OD), scutellum (1-1.5OD) also on posterior margin, longest posteromedially, metanotum (≤1.5OD); propodeal hairs moderately long and dense dorsolaterally (0.5-1.5OD); scopae on metafemur and metatibia (1-2OD); T1-T3 apicolateral patches of tomentum (0.5-1OD); S1 hairs long and moderately dense (≤2.5OD); S2 scopal hairs (1-3OD).

Surface sculpture: As in male except as follows: supraclypeal area irregularly punctate (i=1-3d) densely punctate toward lateral margin (i≤d); frontal area densely punctate (i≤d), moderately densely punctate around ocelli (i=1-2d); vertexal area moderately densely punctate (i=1-2d); scape shallowly and moderately densely punctate (i=1-2d); genal area coarsely imbricate and moderately densely punctate (i=1-2d); hypostomal area weakly imbricate, shallowly and sparsely punctate (i≥2d); mesoscutum and scutellum densely punctate (i=0.5-1d); mesepisternum irregularly punctate, sparse below scrobe and anterior of episternal groove (i=1-3d), dense on hypoepimeral area (i≤d); metanotum moderately densely punctate (i=0.5-2d); metapostnotum rugose, minutely rugose posteriorly; propodeum moderately densely punctate (i=1-2d); T1 punctures small and sparse (i≥2d basally; i=1-3d apically); T2-T5 punctures small and sparse (i=1-3d on T2-T3; i≥2d on T4-T5); T6 moderately densely punctate (i=1-2d).

Structure: Labrum 2.4 × wider than long (24:10); malar space two-thirds as long as clypeal lateral (6:9); LOT below anterior tentorial pits; clypeus ~1.2 × as long as maximum width in frontal view (35:29) extending for less than half of its length beyond LOT; median longitudinal groove weak on clypeus; subantennal sutures shorter than the shortest distance between them (11.5:12.5); IAD 1.5 × AOD (13.5:9); scape ~3.3 × as long as maximum width (23:7); pedicel longer than wide (8.5:7); F1 shorter than wide (5.5:7); F2 shorter than F1 and shorter than F3 (F2:F3 - 4:5); UOD ~1.3 × LOD, IOD ~1.1 × as long as UOD (UOD:IOD:LOD - 48:51:38); frontal line carinate in lower half, flat above; MOC longer than width of head (83:79); OOC ~0.5 × IOC (9.5:20.5); genal area ~0.6 × as wide as eye in lateral view (16:28); ratio of lengths of mesoscutum: scutellum: metanotum: metapostnotum - 56:22:11:12; probasitarsus 3.5 × as long as maximum depth (21:6); length of prodistitarsus ~0.7 × that of preceding three tarsomeres combined (from II to V - 7:6:5:12.5); metafemur ~3 × as long as maximum depth (46:15); metatibia 3.6 × as long as maximum depth (54:15); metabasitarsus 4 × as long as maximum depth (36:9).

Material studied

(29 males & 65 females): Holotype (male): Region III, Travesía, S 27.540°, W 70.443°, 713m, x.1972, Toro (AMNH); Allotype (female): same data as holotype (AMNH); Region III: one paratype female, same data as holotype (AMNH); two paratype females, same data as holotype, on Heliotropium (AMNH); three paratype males and two paratype females, same locality as holotype, x.1969, H. Toro (AMNH); one paratype male, same locality as holotype, 23.x.1969, H. Toro, PUCV-ENTO 19915 (PUCV); one paratype female, Via Panam N of Caldera, S 27.058°, W 70.803°, 17m, 2.x.1972, J.L. Neff, on Cristaria (AMNH); one male, same locality as holotype, ix.1986, De la Hoz (PUCV); one female, same locality as holotype, ix.1986, De la Hoz Jr. (PUCV); one male and one female, Hwy 5, km 848, S 27.3448°, W 70.6931°, 193m, 16.x.2009, J. Gibbs (PCYU); one male, same data, Bee-BOL BOWGF1087-10 B04743D06-CHL (PCYU); one male, 1 km N of Caldera, S 27.0575°, W 70.8028°, 17m, 18.x.2009, J. Gibbs, Bee-BOL BOWGF1094-10 B04743E01-CHL (PCYU); three females, Pesquera Bahía Caldera, S 27.0541°, W 70.8043°, 15m, 6.xi.2013, S. Monckton (PCYU); one male and one female, Pesquera Bahía Caldera, S 27.0541°, W 70.8043°, 0m, 6-15.xi.2013, S. Monckton & J. Postlethwaite (CTMI); one female, S of Chañaral, Ruta 5, km 930, S 26.6650°, W 70.7172°, 21m, 7.iv.2013, S. Monckton (PCYU); two males and two females, Balneario Flamenco, S of Chanaral, S 26.573°, W 70.682°, 15m, 22.iii.2000, L. Packer (PCYU); one male and one female, Rd to Nantoco km 0, S 27.6043°, W 70.4495°, 580m, 1.x.2013, S. Monckton, CCDB-19989 B05 // PCYU 0021679, CCDB-19989 B04 // PCYU 0021678 (PCYU); one male, Ruta 5, Km 773, S 27.6421°, W 70.4634°, 600m, 25.x.1995, L. Ruz (PUCV); three males, same locality and date, S. Rodriguez (BBSL); one male and one female, Atacama Prov., 50-60km S Copiapó, S 27.798°, W 70.501°, 500m, 24.viii.1966, M.E. Irwin & E.I. Schlinger (BBSL); two females, C-451, 2.3 km E of Ruta 5, S 28.0188°, W 70.5538°, 488m, 22-25.x.2010, L. Packer, pan traps (PCYU); one female, Cta Totoral, S 27.8316°, W 71.0841°, 14m, 7.xi.2013, S. Monckton, pan trap, CCDB-19989 C02 // PCYU 0021688 (PCYU); one male, Castilla, S 27.856°, W 70.597°, 327m, 18.ix.1986, L. Ruz (PUCV); one male, same locality, ix.1986, H. Toro (AMNH); one male, N of Huasco km 72, S 27.8896°, W 71.0824°, 216m, 7.xi.2013, S. Monckton, pan trap, CCDB-19989 B07 // PCYU 0021681 (PCYU); one female, N of Huasco, km 67.2, S 27.9272°, W 71.0851°, 169m, 7.xi.2013, S. Monckton, pan trap, CCDB-19989 C01 // PCYU 0021687 (PCYU); one female, N of Huasco, km 43, S 28.1131°, W 71.1542°, 55m, 7.xi.2013, S. Monckton (PCYU); one male and two females, Parque Nacional Llanos de Challe, S 28.196°, W 71.044°, 230m, 13.x.2000, L. Packer (PCYU); one female, N of Huasco, km 18, S 28.3248°, W 71.1442°, 37m, 7.xi.2013, S. Monckton (PCYU); one male and one female, Tres Playitas, 10 km N of Huasco Bajo, S 28.397°, W 71.185°, 32m, 13.x.2001, L. Packer (PCYU); four males, 4.4km N of Huasco Bajo, S 28.43°, W 71.192°, 16m, 14.ix.2010, L. Packer (PCYU); one male and fifteen females, 6 km N of Huasco, S 28.4361°, W 71.1846°, 87m, 14.x.2013, S. Monckton (PCYU); eighteen females, N of Huasco, S 28.4402°, W 71.1880°, 26m, 14.x.2013, S. Monckton (PCYU); three females, same data, pan traps, CCDB-19989 C03 // PCYU 0021689, CCDB-19989 D04 // PCYU 0021697, CCDB-19989 D03 // PCYU 0021696 (PCYU); one female, same locality and collector, 7.xi.2013, pan trap, CCDB-19989 C04 // PCYU 0021690 (PCYU); one male, 2.4 km N of Huasco Bajo, S 28.4554°, W 71.1848°, 112m, 19.x.2009, J. Gibbs, PCYU-JG09-199 (PCYU); one female, 2.4 km N of Huasco Bajo, S 28.4554°, W 71.1849°, 19m, 19.x.2009, J. Gibbs, Bee-BOL BOWGF1091-10 B04743D10-CHL (PCYU).

Distribution.

Intermediate Desert, distributed coastally from Balneario Flamenco south to Huasco Bajo and inland to Travesía (Region III); 0-713m a.s.l.

Ecology.

Collected on Cristaria (1 record) and Heliotropium L. (2 records). Recorded August to November and March to April.