Heteromeringia apholis, Lonsdale & Marshall, 2007

Lonsdale, Owen & Marshall, Stephen A., 2007, Revision of the New World Heteromeringia (Diptera: Clusiidae: Clusiodinae), Beiträge Zur Entomologie = Contributions to Entomology 57 (1), pp. 37-80 : 61-62

Heteromeringia apholis sp. n.

( Figs 51-53 , Map 3 )

Description

Male

Body length 2.4 mm. Bristles black. Anterior dorsocentral bristle 2/3 length of posterior dorsocentral. Ocellar bristle well-developed. Genal bristles small and hair-like. Three fronto-orbital bristles. Anepisternum without disc. Body brown with face, parafacial, gena and anterior half of buccal cavity dirty white, antenna and anterior margin of frons orange and first flagellomere darkly infuscated on inner and distal faces. Occiput relatively wide and broadly rounded; gena nearly half height of eye. Dorsal half of gena silvery tomentose (tomentose band tapering posteriorly); frons pilose with wide shiny space along posterior margin enclosing ocellar tubercle. Wing clouded along anterior margin from R 1 to apex. M 1+2 ratio 5.6.

Male terminalia ( Figs 51-53 )

Width and height of epandrium 1/3 greater than length. Cerci approximately 3/4 height of epandrium, widening distally and with deep triangular emargination. Surstylus 7/10 height of epandrium, acutely triangular, curved posteriorly, and with minute setulae along outer surface and numerous small pointed bristles distally on inner-apical surface. Internal genitalia as described for H. nitidanitida except dorsal margin of hypandrium reclinate, suture absent, phallapodeme half as long, setulae on pregonite restricted to anterior and posteroventral patches, and distiphallus wide and membranous distally (without elongate apical process).

Female

Unknown.

Etymology

The specific name is derived from the Greek for “scale/spot”, denoting the small circular structure found on the anepisternum of many HeteromeringiaHeteromeringia males; the prefix “a” indicates the absence of this structure.

Holotype: MEXICO. Durango. 9000', 10mi W El Salto , J.F. McAlpine, 5.vi.1964 (1 , CNCI).

Comments

Heteromeringia apholis is a small, dark species, and the only New World Heteromeringia outside of the H. czernyi group (possibly aside from two species as yet unknown from males) without an anepisternal disc.

See comments for Heteromeringia zophina .

Figures

Map 3: Distributions of Heteromeringia apholisapholis sp. n., H. zophinazophina sp. n., H. decora sp. n., H. nervosanervosa sp. n., H. volcanavolcana sp. n., H. nanellananella sp. n., H. nigrifrons KERTESZ, and H. fucata HENDEL.

Figs 51-53: Heteromeringia apholis sp. n., genitalia. 51 external, left lateral; 52 external, posterior; 53 internal, left lateral.