Neboissomina krokale (Neboiss) Neboiss, 2011

Cartwright, David I., 2011, Descriptions of Neboissomina, new genus and 6 new species of Ecnomidae from Australia (Trichoptera), Zootaxa 2736, pp. 17-30 : 21

Neboissomina krokale (Neboiss) comb. nov.

Figs 6–8

Ecnomina krokale Neboiss, 1979: 828 , figs 7–9.— Neboiss, 1986: 154.

Diagnosis. Neboissomina krokale most closely resembles N. mida in possessing fused, ovoid inferior appendages, each tapered strongly in distal 1/4th to form a single point, but it is distinguished by the single central dorsal process visible subapically on the fused inferior appendage.

Description. Head, body, and wings light brown; wings similar to those of N. jardinei , new species (Fig. 2), length of each forewing: male 3.0 mm, about 3.3 times width; length of each hind wing about 4.0 times width. Wing venation: Each forewing with forks 2, 3, 4 and 5 present; fork 2 length 1.6–1.7 times length of fork 3; fork 3 with short footstalk, length about twice length of footstalk, length of footstalk 1.7–1.9 times length of cross-vein m; cross-veins r-m and m nearly contiguous at footstalk of fork 3, r-m and m separated by about 0.6 times length of cross-vein m; fork 5 length about 1.7 times length of fork 4. Hind wings each with forks 2, 3 and 5 present; fork 2 with footstalk, length of fork 2 footstalk about twice length of cross-vein r-m, length of fork 2 about 1.2 times length of fork 3.

Male. (Revised after Neboiss, 1979). Tergum X membranous, with pair of long, slender dorsal processes, widely separated at base, converging and crossing distally (Fig. 8). Superior appendages short and robust, in lateral view length about 2.5 times width (Fig. 6); in dorsal view length about 2.5 times width, slightly dilated distally (Fig. 8); pair of long, slender processes (mesal processes of tergum X) ventro-basal of superior appendages. Phallus simple, tube-like, slender (Fig. 6). Inferior appendages longer than superior appendages, fused, in ventral view large, ovoid shield, tapered to rounded point distally, length about twice width (Fig. 7), in lateral view, length about 3 times width, dilated near middle, slightly upturned with single dorsal process subapically (Fig. 6).

Female. Unknown.

Material examined: Queensland. Holotype male, Fraser Island, Little Minker Lake, 18 Dec 1975, H. Burton ( NMV, T- 5697, specimen PT-547 figured).

Remarks. Neboissomina krokale appears to be restricted in distribution and probably is rare, as only 1 male specimen has been collected from the type locality on Fraser Island (latitude 24°53'S). Neboiss’s (1979) figures have been redrawn to allow direct comparisons and to accompany the description that is revised in light of new interpretations of Ecnomina and Neboissomina genitalic structures.