Xanthocotelles, TORO & CABEZAS, 1978

Ferrari, Rafael R & Packer, Laurence, 2021, Morphological phylogeny and review of the generic classification of Colletinae (Hymenoptera: Colletidae), Zoological Journal of the Linnean Society 193 (1), pp. 199-216 : 211-212

publication ID

https://doi.org/ 10.1093/zoolinnean/zlaa128

persistent identifier

https://treatment.plazi.org/id/03AF280C-FFE1-174A-A216-FA9458D6FAAB

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Plazi

scientific name

Xanthocotelles
status

 

XANTHOCOTELLES TORO & CABEZAS, 1978

( FIGS 1E, 1F View Figure 1 )

Type species: Xanthocotelles adesmiae Toro & Cabezas, 1978 .

Diagnosis: Females of Xanthocotelles are unique among Colletinae in having S6 broader than long (this study; Supporting Information, Fig. S10A) [S6 longer than broad (Supporting Information, Fig. S10B–F) in the females of Colletes , Hemicotelles and Mourecotelles ]. Males of Xanthocotelles can be diagnosed through the combination of horizontal surface of T1 much shorter than T2 (modified from: Michener, 1989; see also Supporting Information, Fig. S12C) and T6 marginal zone covered with pale tomentum (this study) [T1 subequal in length to T 2 in females of Colletes (Supporting Information, Fig. S12D) and T6 marginal zone without tomentum in females of both Hemicotelles and Mourecotelles ]. Xanthocotelles can be further differentiated from Colletes and Hemicotelles by metapostnotum without transverse carina in both sexes (modified from: Michener, 1989; see also Fig. 4C View Figure 4 ) [metapostnotum with transverse carina ( Fig. 4D, E View Figure 4 ) in Colletes and Hemicotelles ] and from Mourecotelles by having pale-yellow to dark-orange hind tibia and basitarsus in both sexes (modified from: Toro & Cabezas, 1978; see also Fig. 1E, F View Figure 1 ) [hind tibia and basitarsus dark-brown to black ( Fig. 1C, D View Figure 1 ) in Mourecotelles ].

KEY TO THE GENERA OF COLLETINAE 1. Subhorizontal and vertical surfaces of metapostnotum separated from each other by a transverse carina that may be complete ( Fig. 4E View Figure 4 ) or interrupted medially ( Fig. 4D View Figure 4 ) (modified from: Michener, 1989). Female: mandible with apical and preapical teeth forming an obtuse angle (modified from: Toro & Cabezas, 1977; see also Supporting Information, Fig. S6E View Figure 6 ). Male: mandible with apical tooth distinctly longer than preapical one (this study; Supporting Information, Fig. S15A) ......................................................................2

–. Subhorizontal and vertical surfaces of metapostnotum not separated from each other by a carina, the two surfaces united in a smooth curve (modified from: Michener, 1989; see also Fig. 4C View Figure 4 ). Female: mandible with apical and preapical teeth forming a right angle (modified from: Toro & Cabezas, 1977; see also Supporting Information, Fig. S6F View Figure 6 ). Male: mandible with apical tooth only slightly longer than preapical one (this study; Supporting Information, Fig. S15B) ...................................................................................................... 3

2. Subhorizontal surface of metapostnotum with longitudinal carinae or sinuous striae (modified from: Michener, 1989; see also Fig. 4E View Figure 4 ); forewing with second recurrent (2m-cu) vein sigmoidal ( Fig. 3D View Figure 3 ) or, at least, with posterior part arcuate outwardly ( Fig. 3C View Figure 3 ) (modified from: Toro & Cabezas, 1977). Female: T 6 without posteromedial longitudinal ridge (this study; Supporting Information, Fig. S9A). Male: T 1 subequal in length to T 2 (modified from: Michener, 1989; see also Supporting Information, Fig. S12D) ................................................................................................................................................................. Colletes

–. Subhorizontal surface of metapostnotum with neither longitudinal carinae nor low striae (modified from: Michener, 1989; see also Fig. 4D View Figure 4 ); forewing with second recurrent (2m-cu) vein straight (modified from: Toro & Cabezas, 1977; see also Fig. 3B View Figure 3 ). Female: T 6 with a posteromedial longitudinal ridge (this study; Supporting Information, Fig. S11B). Male: T 1 much shorter than T 2 (modified from: Michener, 1989; see also Supporting Information, Fig. S12C)....................................................................................... Hemicotelles

3. Hind tibia and basitarsus dark-brown to black (modified from: Toro & Cabezas, 1978; see also Fig. 1C, D View Figure 1 ). Female: mandible with preapical tooth broadly truncate (this study; Supporting Information, Fig. S6D View Figure 6 ); hind tarsal claws with subapical teeth (modified from: Toro & Cabezas, 1978; see also Supporting Information, Fig. S16J). Male: T 6 marginal zone not covered with tomentum (this study)..... Mourecotelles

–. Hind tibia and basitarsus pale-yellow to dark-orange (modified from: Toro & Cabezas, 1978; see also Fig. 1E, F View Figure 1 ). Female: mandible with preapical tooth narrowly rounded (this study; Supporting Information, Fig. S6C View Figure 6 ); hind tarsal claws without subapical teeth (modified from: Toro & Cabezas, 1978; see also Supporting Information, Fig. S16I). Male: T 6 marginal zone covered with pale tomentum (this study) ................................................................................................................................................... Xanthocotelles

Additional species: Xanthocotelles aisen Toro & Cabezas, 1978 , X. andinus ( Ruiz, 1938) , X. atacama Toro & Cabezas, 1978 , X. basitarsalis Toro & Cabezas, 1978 , X. fritzi Toro & Cabezas, 1978 , X. incahuasi Toro & Cabezas, 1978 , X. plantaris (Vachal, 1909) , X. sicheli (Vachal, 1909) , X. subandinus Toro & Cabezas, 1978 and X. tarsalis Toro & Cabezas, 1978 .

Comments: Xanthocotelles is endemic to Chile and Argentina ( Toro & Cabezas, 1977, 1978; Michener, 1989, 2007; Moure & Urban, 2002; Moure et al., 2007; Ascher & Pickering, 2020). Even though X. plantaris was not included in our phylogenetic analyses, Toro & Cabezas’ (1978:143) drawings of the male terminalia show that the species is undoubtedly a Xanthocotelles .

T

Tavera, Department of Geology and Geophysics

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hymenoptera

Family

Colletidae

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