Paraclius norrbomi Soares & Capellari & Ale-Rocha 2023, sp. nov.
Creators: name: Soares, Matheus M. M.
name: Capellari, Renato S.
name: Ale-Rocha, Rosaly
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Dolichopodidae
Paraclius
Paraclius norrbomi

description: Paraclius norrbomi sp. nov.
(Figs 11, 12, 16)
Diagnosis (male). Face as wide as ocellar tubercle (Fig. 11B). Postpedicel subtriangular, brown, except basal 1/3 orange yellowish (Fig. 11C). Legs mostly yellow, except lateral surface of coxa II, tarsus II and III becoming brown from apex of tarsomere 1 (Fig. 11A); tarsus I cylindrical with ventral surface covered by whitish pile from apical 2/3 of It 1 (Fig. 11E, F). Wing gently brownish; M 1 gradually curved towards R 4+5, slightly convergent at apex (Fig. 11G). Hypopygium as long as abdomen (Fig. 11D); cercus branched, dorsal branch short, about 1/2 as long as ventral branch, nearly straight, truncated, with a few slender setae at apex, ventral branch short and wide, about 1/5 of length of epandrium, truncated, with several ribbon-like setae at apex, outer surface covered by short slender setae, longer at ventral edge (Fig. 12D).
Description. Male. Body length (holotype): 3.6 mm. Wing: 2.9 mm long, 0.9 mm wide. Similar to Paraclius latipes, except as noted. Head (Fig. 11B, C). Upper-most 5 postocular setae black, lower white, ending in 1 longer white seta. Face as wide as ocellar tubercle, about 2.5X longer than clypeus; clypeus quadrangular; antenna orange yellowish, except apical 2/3 of postpedicel brown; postpedicel subtriangular, slightly longer than wide and covered by short whitish pubescence; arista-like stylus brownish, dorsal, arising from basal half of postpedicel, about 3.5/5 of eye height, two-segmented, first segment short, ending at apex of postpedicel, second segment long, about 4X longer than first segment, covered by short setulae. Thorax (Fig. 11A). Mesonotum with strong bluish and purple reflections. Scutellum concolorous with mesonotum. Pleura brownish, covered by silvery pruinosity, with weak metallic green reflections, metepimeron brown. Chaetotaxy: scutellum with pair of strong medial scutellars and pair of smaller setae laterad, about 1/5 as long as medial scutellars. Wing (Fig. 11G). Membrane gently brownish; length of crossvein dm-m/last part of M 4 (“CuAx ratio”): 0.85. Legs (Figs 11A, E–F). Mostly yellow, except lateral surface of coxa II, tarsus II and III becoming brown from apex of tarsomere 1; setae on legs black, unless otherwise mentioned. Leg I. Podomere ratios: 34, 28, 13/4/4/3/3. Anterior surface of coxa I covered by short setae, outer edge with 2 strong setae, 1 after middle and 1 near apex, apical edge with 1 long and strong and 2 short setae. Femur I covered by short vestiture ofsetae, except ventral surface mostly bare, with 1 short posteroventral preapical seta. Tibia I with 1 anterodorsal seta at 2/6, 3 posterodorsal setae at 2/6, 3.5/6, and 1 preapical, 1 posterior preapical seta, and 1 anterodorsal row of short, stout setae from basal 3/6 to apex. Tarsus I with ventral surface covered by whitish pile from apical 2/3 of It 1 (MSSC). Leg II. Podomere ratios: 43, 40, 17/11/9/4/4. Anterior surface of coxa II covered by short setae, inner edge with long setae at basal 1/2, outer edge with 1 strong seta at middle, apical edge with 2–3 short setae. Femur II covered by short vestiture of setae, except ventral surface mostly bare, with 1 strong anterior seta at apical 5/6 and 1 short posteroventral preapical seta. Tibia II with 3 pairs of antero- and posterodorsal setae at 1/6 (about half-length of second pair), 1.5/6 and 4/6, 1 anterodorsal seta at 2.5/6, 1 anteroventral seta at 2.5/6, 1 antero- and 1 posterodorsal, 1 anteroventral, 1 ventral and 1 posterior setae at apex. Leg III. Podomere ratios: 43, 49, 12/19/14/9/5. Anterior surface of coxa III with 1 long seta at apical edge, lateral surface with 1 long seta at middle and 1 short at apex. Femur III laterally compressed, about 1.35X wider than femur II at broadest point, covered by short vestiture of setae, except ventral surface mostly bare, with 1 strong anterodorsal seta at 4.5/6, and 1 anteroventral long seta at 5/6. Tibia III with 3 pairs of antero- and posterodorsal setae at 1/7 (about half-length of second pair), 1.5/7, and 3/7, 2 anterodorsal setae, 1 at 4.5/7 and 1 at 6.5/7, 2 posterodorsal setae, 1 at 4/7 and 1 at 5.5/7, 1 ventral seta at 4.5/7, 1 anterior and 1 ventral setae at apex, ventral row of 3–4 short setae from basal 2/7 to apical 4/7. IIIt 1 with 1 short basiventral seta. Tarsus III unmodified. Abdomen (Fig. 11A, D). Mostly metallic green with bluish reflections, tergites 1–5 setose, posterior margins with longer setae, tergites 6 and 7 bare; sternite 8 brown, with weak greenish reflections, covered by short, sparse black setae, longer at posterior margin. Hypopygium (Fig. 12). As long as abdomen; epandrium dark brown, with weak bluish and greenish reflections, 2.5X longer than high, truncated at apex, with 1 short basiventral seta (Fig. 12A, B); apicoventral lobe small and digitiform, with two short and slender setae, 1 at middle and 1 at apex, both as long as apicoventral lobe (Fig. 12B, C); ventral lobe of surstylus somewhat L-shaped at base, abruptly narrowing towards apex, forming long digitiform projection, with 1 short dorsal stout seta at middle (Fig. 12C, F); dorsal lobe of surstylus slightly shorter than ventral lobe, narrowing abruptly at apex, forming long digitiform projection dorsally directed, with 1 short slender seta at middle of inner edge (Fig. 12G); postgonite short, bifurcate, well sclerotized and curved ventrally at apex, somewhat V-shaped in ventral view (Fig. 12C); basal sclerite of sperm pump narrow and strongly sclerotized, connected posteriorly to sperm pump (Fig. 12C); sperm pump short, folded over itself, shorter than ejaculatory apodeme (Fig. 12C); ejaculatory apodeme long and narrow, somewhat knife-shaped, ventral edge weakly sclerotized (Fig. 12C); proctiger wide, cup-shaped (Fig. 12C); hypandrium asymmetrical, with 1 wide and serrate hypandrial process at apex (Fig. 12A, B, E); basal part of phallus weakly connected with apical part, ventral and dorsal edges of apical part of phallus serrate and strongly narrowing apically (Fig. 12C); cercus branched, dorsal branch short, about 1/2 as long as ventral branch, nearly straight, truncated, with a few slender setae at apex, ventral branch short and wide, about 1/5 of length of epandrium, truncated, with several ribbon-like setae at apex, outer surface covered by short slender setae, longer at ventral edge (Fig. 12D). Female. Unknown.
Type material. HOLOTYPE ♁ labelled: “ COSTA RICA: Guanacaste | Santa Rosa, N.P. [ca 10°50′10.2″N 85°42′19.6″W], 350m dry | forest, yellow pantrap (25 YPT | C-04), 11–12.iii.1996, L. Masner ” (CNC); “HOLOTYPE | Paraclius norrbomi | Soares, Capellari & Ale-Rocha [red label]”. Holotype condition: good, terminalia dissected and stored in microvial. PARATYPE: same data as holotype (1 ♁, dissected, INPA).
Remarks. Paraclius norrbomi sp. nov. differs from all the other known species of the latipes -group by the ventral branch of the cercus truncated at apex with strong setae and proctiger cup-shaped.
Etymology. Named after Allen Norrbom (NMNH) for his constant collaboration with the loan of specimens and photographs of type material that made it possible to complete this study.
Distribution. Costa Rica (Fig. 16).
description: Published as part of Soares, Matheus M. M., Capellari, Renato S. & Ale-Rocha, Rosaly, 2023, New or little-known Neotropical Dolichopodidae (Diptera) (II): genus Hercostomus Loew excluded from the Neotropics, pp. 181-208 in Zootaxa 5254 (2) on pages 198-201, DOI: 10.11646/zootaxa.5254.2.2, http://zenodo.org/record/7727356