Leptomorphus waodani Borkent

Borkent, Christopher J. & Wheeler, Terry A., 2012, Systematics and Phylogeny of Leptomorphus Curtis (Diptera: Mycetophilidae) 3549, Zootaxa 3549, pp. 1-117: 70-71

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Leptomorphus waodani Borkent

new species

37. Leptomorphus waodani Borkent   , new species

( Figures 39, 77, 90, 124, 143, 150, 155)

DIAGNOSIS: The only extant species of Leptomorphus   with the following combination of characters: scutum and scutellum evenly covered with fine trichia; male foretibia with a dense row (comb) of short anteroventral bristles ( Fig. 90); palp segment 5 with thick covering of fine, white, setulae; male genitalia with tergite 9 tapering posteriorly to a point, with short pointed processes laterally at 2/3 of length towards apex; gonocoxite with large gonocoxal lobe on medial margin ( Fig. 124).

This species is distinguished from most other Neotropical species missing R 4 by mostly yellow abdomen (tergites 6, 7 brown) and having the scutellum lighter brown than the scutum or mediotergite ( Fig. 39). It can be distinguished from L. amorimi   and L. fasciculatus   by the posteromedial margin of tergite 9 being pointed rather than concave ( Fig. 124).

DESCRIPTION: Male. ( Fig. 39) Head: brown spot medially from ocelli to antennal base, remainder yellow, somewhat dorsoventrally compressed in anterior view. Antenna dark brown; scape yellow, with brown setae in short row on apicodorsal margin and thick patch covering apicoventral process, remainder bare, anterobasal patch of setulae present; pedicel yellow, with 1–2 large bristles, few setae on apicodorsal margin, patch of fine setae apicoventrally; flagellomere 1 with tapered base yellow remainder dark brown; flagellomere 6 1.3X as long as broad. Clypeus yellow, slightly laterally compressed oval; bristles on clypeus yellow, 4–6 strong bristles on ventral margin directed ventrally, remaining setae directed medioventrally, clypeus 2X as long as face. Face yellow; shape a slightly wider than tall triangle, bare. Frons brown; bare, frontal furrow running 1/2 distance from dorsal margin towards ventral margin, frontal cleft more than 1X diameter of median ocellus anterior of median ocellus. Palpus yellow; segment 1 hidden behind eye, segments increasing in length, segment 5 2X length and 1.5X width of segment 4 with even width from base to apex and covered in fine white setulae, segment 3 without distinct lateral patch of fine setae. Labellum yellow. Eye with very few, short inter-ommatidial setulae scattered on surface. Occiput yellow with appressed, anteriorly directed setae. Three ocelli, in a straight line, space between ocelli less than diameter of laterals, lateral ocelli 2.5X their own diameter from eye margin, ocellar triangle dark brown. Thorax: Length 1.64 mm (n = 1). Dark brown with yellow lateral spots. Scutum dark brown/black with blue-green specks, pair of yellow anterolateral spots, one specimen with lateral margins brown and remainder yellow; surface of scutum covered with trichia; acrostichal setae absent; single dorsocentral seta present anteriorly; two thirds row of lateral setae present; patch of setae on scutum at wing base present. Scutellum dark brown with covering of fine trichia; bristles absent. Prescutum anterior half yellow, posterior half brown. Mediotergite dark brown with 6 bristles on posterolateral corners, and covering of appressed trichia. Laterotergite brown, with covering of appressed trichia; anterior margin of laterotergite abutting katepisternum. Anepimeron brown with posterodorsal corner yellow. Anepisternum brown. Katepisternum brown with posterodorsal corner yellow. Antepronotum and proepisternum brown. Margin of anterior and posterior spiracles yellow with yellow trichia. Metepisternum yellow. Anapleural suture with anterior portion slightly curved dorsally. Halter stem yellow, knob light to dark brown. Legs: principally yellow; hind coxa with brown spot along length of anterior surface; extreme anteroapical corner yellow on forefemur, on other femora dark brown. Midfemur without apical spine-like process. Tibia with covering of brown macrotrichia, foretibia with comb of short setae along length of anteroventral surface ( Fig. 90), tibial spurs brown, foretibial spur length 2X apical thickness of foretibia, midtibia with strong, dorsal, bare patch of even thickness for 2/3 of its length, placed basally, shortest midtibial spur 0.8X length of longest, longest midtibial spur 4X apical thickness of midtibia, shortest hind tibial spur subequal to length of longest, longest hind tibial spur 4X apical thickness of hind tibia. Foreleg first tarsomere 1.7X length of foretibia. Wing ( Fig. 90): Length 6.7 mm (n = 1). Hyaline; apical macula dark brown but fading towards apex and posterior margin, running from anterior to posterior wing margin, beginning halfway along R 5; medial macula extending from R 1 to stem of M 1+2. Macrotrichia in all cells, though absent from posterobasal margin of cell a, and sparse in basal cells. Setae on basal posterior margin of wing (along base of cell a) alternating long, short. Calypter with a few short setae. Vein sc-r present, apical end joining R within its own length prior to origin of Rs. R 4 absent. R 5 slightly concave for entire length. M 1 reaching apex before R 5, apices of M veins reaching wing margin. M 4 -CuA fork arising before origin of r-m. A 2 absent. Abdomen: Tergites principally yellow, T1 and 6–7 dark brown, T5 with posterior 1/2 dark brown. Tergite 8 smaller than all other abdominal sclerites, without bristles. Genitalia ( Fig. 124): mostly brown with apex yellow. Sternite 9 sclerotized, thin, posteriorly tapered sclerite, almost as long as aedeagus, not reaching gonocoxal margin. Tergite 9 longer than wide, rounded basally, tapering into long point at apex with small point 2/3 way to apex. Gonocoxite placed centrally on T9, medial margins not reaching median line, apicolateral margin a short point, apicoventral margin extended into long (2X remainder of gonocoxite) tapering point, bearing gonostylus centrally. Gonostylus a single broad-based lobe tapering to a point apically and slightly curved dorsally with setae on basal half, gonocoxite III associated with dorsal margin of gonostylus but not fused to it. Aedeagus ~1.2X length of S9, tapering to middle and then swelling to apex which ends in a pointed lobe on each lateral corner and a medial rounded bump, apodemes sclerotized and 1/4 total length. Parameres a simple thin taper with a swollen base, apodemes ~1/2 length of parameres.

Female. Unknown.

Immatures. Unknown.

BIOLOGY: Unknown.

DISTRIBUTION: Ecuador ( Fig. 143), 215 masl.

ETYMOLOGY: This species is named in honour of the Waodani (also spelled Waorani or Huaorani) people of Amazonian Ecuador, as the holotype was collected in their territories. The name is proposed as a noun in apposition   .

MATERIAL EXAMINED: Holotype: here designated, adult male, pinned with genitalia in vial on pin, labelled “ ECUADOR: Orellana, Res. Ethnica/ Waorani , 1 km S. Onkone Gare Cmp / Trans. Ent. 216.3m, 00°39'26"S,/ 076°27'11"W, 21.vi.1996, fogging/ terre firme forest, T. L. Erwin et al. / Trans. 4 Sta. 1 Proj. MAXUS # 1551; HOLOTYPE ♂ / Leptomorphus waodani   / Borkent, new species / Det. C.J. Borkent 2012” [ USNM]. GoogleMaps  


Tavera, Department of Geology and Geophysics


Smithsonian Institution, National Museum of Natural History