Lannapsyche setschuana Malicky 1995

Morse, John C., 2017, Lannapsyche and Marilia species of China (Trichoptera: Odontoceridae), Zootaxa 4320 (1), pp. 81-99 : 83-84

Lannapsyche setschuana Malicky 1995

( Figs. 1 , 3 )

Lannapsyche setschuana Malicky 1995b: 25 –26. Type locality: Si-chuan (China).

Our specimens were collected from North China (Oriental-East Palearctic boundary). The male genitalia of the specimens are closely congruent with those of Lannapsyche setschuana specimens from Central (Oriental) China, Si-chuan Province (Jin-lang Tai, W. Cheng-du). For clear comparisons, the male genitalia are re-illustrated and redescribed.

Redescription: Adult. Length of each male forewing 11.0– 11.2 mm (n = 4). Specimens in alcohol generally dark brown, warts on head and thorax yellow. Mesal setal wart present on first segment of each maxillary palp ( Fig. 1E ). Wing venation very similar to that of Lannapsyche chantaramongkolae and, in each forewing forks I, II, III, and V present; forks I, II, and V sessile, fork III petiolate; and single anal vein with row of bristles ventrally (similar to Fig. 5 Fa), however R1 not unusually close to R2 distally, R4 not as strongly curved anterad, and apical distances between R2–R3 and R3–R4 less than between R4–R5; in each hind wing, R1 confluent with R2 shortly after end of Sc (as in Fig. 5 Fp) and short crossvein r -m present between R5 and MA ( Malicky 1995b, fig. on p. 25).

Male genitalia Pleura IX each divided by longitudinal oblique groove into dorsal and ventral parts ( Fig. 1A , long. gr.); in lateral view on each side, anterior margin of segment IX dorsally and ventrally concave leaving rounded production at anterior end of longitudinal groove about 1/3 distance from ventral margin; lateromedian apical lobe of IX at posterior end of longitudinal groove produced in 90° angle about 1/3 distance from dorsal margin ( Fig. 1A, l.m .lob.) Tergum IX produced posteromesally into narrow triangular lobe, about 2 times as long as its basal width in dorsal view ( Fig. 1B, t .IX). Sternum IX deeply concave anteriorly and broadly concave posteriorly in ventral view ( Fig. 1C, s .IX). Preanal appendages present as convex, setose areas, merged with sides of mesal projection of segment IX and base of segment X ( Figs. 1A, 1B , pre.app.). Segment X forming pair of broad, rhomboid lobes, tapering from mid length to apices in lateral view ( Fig. 1A, t.X ), dorsal edges of these lobes each expanding laterad to form pair of elongate plates, each about 4 times as long as its average width and with triangular subbasolateral projection in dorsal view ( Fig. 1B, t.X ), median cleft between lobes 6/7 as long as tergum X and pleural portions of segment X not visible when viewed dorsally. Inferior appendages with coxopodite parallel-sided, stout, and straight in lateral view, each with length between base of coxopodite and its subapical lobes about 2 times its width, subapicodorsal lobe about 2 times as long as subapicoventral lobe ( Fig. 1A , inf.app., sub.d.lob., sub. v.lob .); harpago broadly triangular, embedded between subapical lobes of coxopodite in lateral view ( Fig. 1A , har.), wider apex thickly covered caudally with short, black, triangular setae, setae-bearing area elongated in kidney shape, with mesal margin slightly concave in ventral view ( Fig. 1C , har.). Phallus almost as long as inferior appendages; phallobase highly sclerotized, constricted at 1/3 distance from base, with distal 2/3 curving backward and bulged in cup shape, fused ventrally with lightly sclerotized phallicata ( Fig. 1D , ph.b., ph.c.), in ventral view bulged portion much broader than base ( Fig. 1E ); ejaculatory duct and phallotremal sclerite conspicuous ( Fig. 1D , ph.scl.), phallotremal sclerite elongate with U-shaped opening in ventral view.

Female genitalia. Segments IX and X and gonopods VIII and IX all firmly united and much sclerotized, dark brown. In dorsal view, anterior parts of tergite IX ( Fig. 3B , tIXa+IXb) short mesally with median length about 1/5 length of lateral margins. Posterior part of tergite IX and tergum X ( Fig. 3B, t .IXc+X) deeply divided into pair of lobes, each apical lobe gradually narrowing to subtruncate apex, about 1/2 as broad as basal width; apical setae black, long and straight, about as long as apical lobes; width between apical portions of two apical lobes almost 2 times width of each lobe itself. In lateral view, dorsal margins of IXc+X forming continuing concave line, with apex of IXc+X tilting upward; on each side, longitudinal lower lateral margin of anterior parts of tergite IX ( Fig. 3A, t .IXa+IXb) almost truncate. In ventral view, spermathecal sclerite of processus spermathecae ( Fig. 3C , sper.scl.) slightly narrowed at anterior distal 1/6 with flat apex; posteriorly this sclerite ending in 2 darkly sclerotized acute structures. On subgenital plate ( Fig. 3C , subg.pl. = fused external gonopods VIII and IX, or e.gon.VIIIa+VIIIb+IX), grey band forming posteriorly open square around region below spermathecal sclerite.

Specimens examined. PR CHINA: Shaan-xi Province : Feng-xian County, north slope of Qin-ling Mountains , Mount Tian-tai of Baoji National Forest Park, light trap, N34.3°, E107.1°, alt. 1500 m, 10-vi-1998, Coll. Yang L-f ., 2 males, 7 females; same date except at 1900 m, coll. Sun Ch-h. and Du Y-z., 1 male, 1 female ; same data except collected by sweep net on 09-vi-1998 by Sun Ch-h. , 1 male 7 females . Zhou-zhi County, north slope of Qin-ling Mountains , headwater of Hei-he River , Hou-zhen-zi Town, light trap, N33°51’09’’, E107°50’15’’, alt. 1250 m, 25-v-1995, Coll. Du Y-z., 1 male, 1 female . Ning-shaan County, Huo-di-tang Forest Experiment Station , Ban-qiao Creek, sweep net, N33°25’, E108°25’, alt. 1600 m, 05-vi-1998, Coll. J.C. Morse, 3 males .

Distribution: Oriental Region of China (Si-chuan) and Oriental-Palearctic Boundary Region of China (Shaanxi, north slope of Qin-ling Mountains).

Figures

FIGURE 1. Lannapsyche setschuana Malicky 1995 b, male genitalia. 1 A, left lateral; 1 B, dorsal; 1 C, ventral; 1 D, phallus, left lateral; 1 Dv, phallus, ventral; 1 E, right maxillary palp of male, segments 1 and 2, mesal.

FIGURE 5. Lannapsyche chantaramongkolae Malicky 1989, male genitalia and wings. 5 A – 5 E, male genitalia: 5 A, left lateral; 5 B, dorsal; 5 C, ventral; 5 D, phallus, left lateral; 5 E, apex of right harpago, caudal. 5 Fa – 5 Fp, right wings, dorsal: 5 Fa, forewing; 5 Fp, hind wing.

FIGURES 3 – 4. Lannapsyche spp., female genitalia. 3, L. setschuana Malicky & Chantaramongkol 1995: 3 A, left lateral; 3 B, dorsal; 3 C, ventral. 4, L. altilis sp. nov.: 4 A, left lateral; 4 B, dorsal; 4 C, ventral.