Neoempheria forficulata, Sueyoshi, Masahiro, 2014

Sueyoshi, Masahiro, 2014, Taxonomy of fungus gnats allied to Neoempheria ferruginea (Brunetti, 1912) (Diptera: Mycetophilidae), with descriptions of 11 new species from Japan and adjacent areas, Zootaxa 3790 (1), pp. 139-164 : 156-158

Neoempheria forficulata sp. n.

[Japanese name: hasami-nagamado-kinoko-bae] ( Figs. 2 i, 3i, 7, 16a, 16b)

Description. Body length: 5.3 mm (4.8–5.5 mm, n= 3). Wing length: 4. 9 mm (4.8–5.1 mm, n= 3). Wing ( Fig. 3 i): vein sc-r ending basal 1/4 of anterior margin of cell r1. Vein Rs as long as distance between basal end of vein Rs and apical end of vein sc-r. Male: genitalia yellow in ground color, with distinct dark marks on sternal projection of S9 and surrounding parts, basal portion of aedeagus yellow. S9 ( Fig. 16 a: S9) broad, 5/6 as wide as long. Sternal projection ( Fig. 16 a: sp) present, acute at apex, directed posteriorly. Gonocoxite ( Fig. 16 a, b: gc) without gonocoxal lobe. Gonostylus short, apical half 2 times as wide as base. Aedeagus ( Fig. 16 a) dilated at apical half, with pair of ventral projections ( Fig. 16 a, b: vp). Sclerotized part of aedeagus ( Fig. 16 a: sa) with 2 pairs of extensions, ventral pair ( Fig. 16 a: ve) supporting projection, dorsal pair extending to dorsolateral portion of aedeagus. Female unknown.

Specimens examined. Holotype. Male. “Kouyadai/ Tsukuba/ Ibaraki Pref./ 18–26.viii 1993 / T Matsumura/ Malaise trap”, green disk label, “Ne.5001” (NIAS). Paratypes. JAPAN [HONSHU] Nara P: Mt. Kasuga, Nara C, 25.vi.2010, H Oishi leg. (1♂, Ne.3001; OMNH). Wakayama P: Koza T, iv.1962, M Sasakawa leg. (1♂, Ne.3002; OMNH).

Etymology. The specific epithet is derived from Latin and refers to the pair of sternal projections composing a pincer-shaped (forficulatus) structure ( Fig. 16 a).

Distribution. Japan (Honshu) ( Fig. 7 ).

Remarks. This species is distinguished from other species similar in general appearances by a pair of sternal projections in the male, of which the apices are extended posteriorly and pincer-like in shape when viewed from ventral side ( Fig. 16 a).

Figures

FIGURE 2. Thoraxes of Neoempheria in dorsal view. a, N. biceltisuta sp. n. (holotype). b, N. bifurcata sp. n. (holotype). c, N. bisecuriata sp. n. (holotype). d, N. brevispathulata sp. n. (holotype). e, N. carinata sp. n. (holotype). f, N. cuneata sp. n. (holotype). g, N. denticulata sp. n. (holotype). h, N. dilatata sp. n. (holotype). i, N. forficulata sp. n. (holotype). j, N. latisternata sp. n. (holotype). k, N. muticata sp. n. (holotype). l, N. sakhalinensis Zaitzev, 2001 (Ne. 2042).

FIGURE 3. Right wings of Neoempheria in dorsal view. a, N. biceltisuta sp. n. (holotype). b, N. bifurcata sp. n. (holotype). c, N. bisecuriata sp. n. (holotype). d, N. brevispathulata sp. n. (holotype). e, N. carinata sp. n. (holotype). f, N. cuneata sp. n. (holotype). g, N. denticulata sp. n. (holotype). h, N. dilatata sp. n. (holotype). i, N. forficulata sp. n. (holotype). j, N. latisternata sp. n. (holotype). k, N. muticata sp. n. (holotype). l, N. sakhalinensis Zaitzev, 2001 (Ne. 2042).

FIGURE 7. Distribution map of Japanese Neoempheria. Neoempheria bisecuriata sp. n. (filled square), N. forficulata sp. n. (filled triangle), and N. sakhalinensis Zaitzev, 2001 (filled circle).

FIGURE 16. Male holotypes of Neoempheria forficulata sp. n. (a, b) and N. latisternata sp. n. (c, d). a, c, 9 th abdominal segment and aedeagus in ventral view. b, d, gonocoxite, gonostylus, and aedeagus in left lateral view. Scale bars = 0.50 mm. Abbreviations: sp, sternal projection of sternite 9; ve, ventral extension of sclerotized part of aedeagus; vp, ventral projection of aedeagus; refer to Fig. 9 for others.