Chilicola (Oroediscelis) jaguense Packer and Dumesh, 2019

Packer, Laurence & Dumesh, Sheila, 2019, Fifteen new species of Chilicola (Oroediscelis) (Hymenoptera: Colletidae: Xeromelissinae) with illustrated keys to the males and females of the subgenus, Zootaxa 4559 (1), pp. 1-56 : 26-27

Chilicola (Oroediscelis) jaguense Packer and Dumesh , new species

urn:lsid:zoobank.org:act:D3B78728-37FB-4BDE-B0C7-5090BF9B44D2

( Figs. 70–71 , 143 )

Diagnosis. This is the only species in which the female has a yellow marking on the face. Additionally, the combination of: malar space <3/4 as long as wide, body size> 6.5 mm and T1 doubly punctate, serves to separate the female from all other species in the subgenus. It is most similar to C. huarpe Packer and Dumesh , n. sp., from which it can be differentiated based upon the yellow facial maculation, longer metapostnotal striae and longer malar space.

Description. Female. Length 6.8 mm; forewing length 4.55 mm, head width 1.6 mm.

Head: 1.2 X as long as wide, 99:81; black, yellow-orange mark above and below anterior tentorial pit, and on apical 1/3 of malar space. Face below antennae shining, weakly imbricate, most strongly on upper 2/3 of clypeus; clypeus and supraclypeal area deeply punctate, i=1–4 d; lower paraocular area deeply punctate, i=0.5–2 d; frontal area densely and evenly punctate, i~0.5 d; facial fovea shiny, punctures small to minute, widely separated; vertexal area coarsely punctate, punctures almost crowded. Malar space shorter than wide (8:11). Longest hairs on face above antennal sockets, 1.3 MOD, longer on vertex <2 MOD; genal beard <3 MOD.

Mesosoma: pronotum and anteromedial portion of mesoscutum doubly punctate, small punctures dense, i<d, larger punctures scattered; rest of mesoscutum somewhat shiny, imbrication shallow; punctures distinct, i~d; mesoscutellum shiny, punctures less regular, i=0.5–2 d; metanotum somewhat shiny, anterior punctures small and dense, i<d, posterior punctures larger, sparser, i=0.5–2 d; mesepisternum with scattered minute punctures among more abundant larger ones, i=1–2 d; metepisternum ruguloso-striate above, coarsely imbricate below, with scattered punctures. Mesoscutum lacking long hairs, <0,5 MOD; mesepisternum with longest hairs <1.5 MOD. Stigma shorter than marginal cell on costal margin (33:46); apex of marginal cell abruptly curving from anterior wing margin, almost truncate; distal stigma perpendicular just apical to first submarginal crossvein. Metapostnotum weakly striate, only median stria and few lateral ones strong, remainder weak and anastomozing; lateral surface of propodeum imbricate, punctures distinct, large at midlength dorsally, smaller anteroventrally, minute posteroventrally.

Metasoma: terga shiny, shallowly imbricate; T1 doubly punctate scattered minute punctures among larger ones, i=1–3 d on disc; apical impressed area mostly densely punctate, i=1–2 d, apical 1/3 of area impunctate; T2– T3 larger punctures denser, i=1–2 d; (remaining terga telescoped and not visible).

Male: unknown.

Material studied. Holotype female: ARGENTINA, La Rioja, Jagüe , 9.iii.1970, C. Porter & L. Stange, “Entomofauna Subandina” [ IML] [See Figs. 184–185 for distribution map].

Etymology. The species is named after the type locality.

Comments. The sole specimen is sufficiently distinctive to warrant description despite the fact that females of the subgenus are often difficult to separate.

Figures

FIGURES 70–71. Chilicola jaguense. 70. female lateral habitus (holotype); 71. female face (holotype).

FIGURES 143–144. Face, anterior view to show: 143. presence (C. jaguense holotype) and 144. absence of yellow maculation (C. huarPe holotype).

FIGURES 184–185. Distribution maps of newly described Chilicola (Oroediscelis) species. 184. Large scale map of South America showing distribution of new species; 185. Small scale map of northern Argentina to show distribution within the country.