Chilicola (Oroediscelis) carpenteri 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 : 21-23

Chilicola (Oroediscelis) carpenteri Packer and Dumesh , new species

urn:lsid:zoobank.org:act:179555F7-5CDB-4C89-B736-7E0273F10544

( Figs. 54–60 , 82 , 113 , 116 , 130 , 132 , 136 , 145 , 148 , 150 , 152 )

Diagnosis. This is one of only three species of the subgenus in which the male has the combination of brush on outer metatibia well developed and anterior face of protibia yellow. Some specimens of C. roigi Packer and Dumesh , n. sp., and C. brzoskai Michener also have this combination. Chilicola carpenteri can be readily distinguished from C. roigi on the basis of its short head (<1.2X as long as wide) and black clypeus. Chilicola roigi has a longer head (1.3X as long as wide) and yellow apical marking on the clypeus. It can be told from C. brzoskai by its yellow-marked clypeus and lower paraocular area; this area is black, rarely with a small yellow mark adjacent to anterior tentorial pit in C. brzoskai . The female can be differentiated by the following combination: malar space nearly 3/4 as long as wide; mesoscutum with punctures on raised anteromedian area much finer and shallower than surrounding punctures; metapleuron finely areolate above. It is most similar to C. rozeni , which has punctures of uniform size on the raised area between notaulices, as well as the metapleuron coarsely striate above.

Description. Male: Length 5.5–6.0 mm; forewing length 4.2mm, head width 1.4–1.5 mm.

Head: almost 1.2 X as long as wide, 77:65. Clypeus black, paraocular area yellow almost attaining level of basal margin of clypeus, mandible with or without small basal yellow-brown maculation. Punctures of clypeus i>d, sparser laterally, <2d; punctures of supraclypeal area sparser than those of clypeus, dense laterally, i=1–4 d; genal area becoming shiny and punctate on lower third. Malar space 2/3 as long as wide (10:15); lower ocular tangent at middle of clypeus; first flagellomere shorter than second on anterior and posterior surfaces (11:15 and 13:16 respectively); last four flagellomeres subequal in length, 1.3X as long as greatest width (12:9). Genal area striate on upper two thirds.

Mesosoma : mesoscutum, mesoscutellum and metanotum dull due to microsculpture, punctures i~d except slightly sparser on disc of mesoscutum; mesepisternum with i~2d, background more shiny. Metapostnotum as long as mesoscutellum, striate, striae usually uninterrupted; lateral surface of propodeum imbricate, shallowly and sparsely punctate. Posterior surface of propodeum finely rugose, lateral surface weakly wrinkled with shallow punctures. Longest hairs of thorax about 2 MOD, on mesepisternum; longest hairs on mesoscutum 1 MOD. Metafemur with posterior ventral margin with a short weak ridge at mid length; metatibia less than 2.5 X as long as greatest width, greatest width subequal to depth; inner crest strongly convex in lateral view, ending in a right angle, somewhat convex in ventral view, outer crest absent; metabasitarsus shorter than remaining tarsomeres combined (50:60), in ventral view widest just basal to midlength, lateral expansion weak, ventral margin with obtuse rounded process.

Metasoma: moderately shiny with weak microsculpture, strongest on T1, interspaces equal to or larger than puncture diameters; apicolateral hair patches weak to absent. S2 with pair of prominent longitudinally oriented preapical sublateral bosses, rounded in lateral view; S3 with very weak bosses; S4 with preapical sublateral processes as long as those on S2 but somewhat acute; S1 covered with moderately dense, erect hairs 1.7MOD; S2 with basal half and region posterior to bosses with erect hairs up to 0.9MOD; S3 with shorter and sparser hairs 0.5– 0.6MOD but with longer hairs posterior to bosses ~0.9MOD; S4 and S5 with subapical row of erect posteroventrally directed hairs, longest laterally, 1.5–1.7MOD; S6 with weaker preapical sublateral longitudinal ridge-like bosses and depressions, lateral hair tufts sparser, pale straw in colour, 1.0MOD and not extending beyond apex of sternum, apical hair fringe very sparse and short. Terminalia : refer to Figs. 54–56 .

Female: As for male except for usual secondary sexual characteristics and as follows: Length 5.6 mm; forewing length 4.3mm, head width 1.4 mm. Head 1.3 X as long as wide (101:77). Upper ocular area with punctures less crowded; genal area becoming shiny and sparsely punctate below; T1–T3 with punctures fine, T1 punctures sparser on apical third. Genal area weakly striate on upper third; metapostnotum more weakly striate, striae often interrupted; lateral surface of propodeum imbricate with fine punctures.

Material studied. Holotype male, two female and eight male paratypes: ARGENTINA, Jujuy, Jujuy, 27km N, 24.0185°S 65.4098°W, 1716m, 27.x–14.xi.2003, M.E. Irwin & F.D. Parker, malaise trap [ LOGAN] (except one pair [ PCYU]). Additional paratypes: ARGENTINA: Salta, N. Campo Quiaje, 1720m 24 o 53’23”S 65 o 40’58”W, 19.x.1994, James M. Carpenter coll., two male paratypes [ AMNH] [See Figs. 184–185 for distribution map].

Etymology. The specific epithet is in honour of James Carpenter, the collector of some of the specimens, and well-known expert in the systematics of aculeate Hymenoptera and of cladistic methodology.

Comments. This species is variable in size, ranging from 4.5 mm to 6.0 mm.

Figures

FIGURES 54–60. Chilicola carPenteri. 54. male lateral habitus (holotype); 55. male face (holotype); 56. male genital capsule, dorsal view (paratype); 57. male S7, dorsal view (paratype); 58. male S8, dorsal view (paratype); 59. female lateral habitus (paratype); 60. female face (paratype).

FIGURES 81–82. Face, anterior view, showing: 81. presence (C. Pustulata paratype); 82. absence of yellow clypeal maculation (C. carPenteri holotype).

FIGURES 112–114. Faces to show extent of yellow maculation. 112 and 113. yellow on lower paraocular area extensive (C. roigi paratype, C. carPenteri holotype); 114. yellow on lower paraocular area considerably reduced (in most taxa coming out in the second half of couple 18, this area is entirely black) (C. brzoskai).

FIGURES 115–116. Oblique view of metasoma to show processes of S4: 115. broadly rounded (C. roigi paratype); 116. acute

FIGURES 129–130. Head, frontal view, to show relative length: width. 129. L~1.5XW (C. calchaqui holotype); 130. L<1.35W (C. carPenteri paratype).

FIGURES 131–132. Heads, side view to show relative length:width of malar space. 131. L clearly> W (C. calchaqui holotype); 132. L<W (C. carPenteri paratype).

FIGURES 135–136. Head and mesosoma, side view, to show relative length of pubescence. 135. long (C. esPeleticola); 136. short (C. carPenteri paratype).

FIGURES 145–146. Head, side view to show relative length: width of malar space. 145. L~0.75W (C. carPenteri paratype); 146. L<2/3W (C. brzoskai).

FIGURES 147–148. Head, frontal view, to show relative length to width. 147. L~1.2XW (C. goloboffi paratype); 148. L>1.25W (C. carPenteri paratype).

FIGURES 149–150. Metapostnotum, dorsal view, to show striae. 149. long, moderately dense and fine (C. caPillitas paratype); 150. short, relatively sparse and coarse (C. carPenteri paratype).

FIGURES 151–152. T1–T2 dorsal view to show: 151. presence (C. caPillitas paratype) and 152. absence of punctation on apical impressed area medially (C. carPenteri paratype).

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.