Nathan Banks.
Trichoptera from the Fiji Islands.
Psyche 43:29-36, 1936.

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PSYCHE
VOL. XLIII JUNE-SEPTEMBER, 1936 Nos. 2-3 TRICHOPTERA FROM THE FIJI ISLANDS
From the Fiji Islands Brauer in 1867 described three species of caddice flies, WormaldUS, nervosa, Hydromanicus ruficeps, and Hydromanicus picem. In 1924 I added three more from material collected by W. M. Mann in 1915, Goera fijiana, Chimarrha rnanni, and Chimarrha obscurella. In 1934 Mosely described two more, Trknodes dub& and Hydropsychodes fijiana; he also places the two Hydrornani- cus of Brauer in the genus Hydropsychodes. From additional material collected by Mr. Mann (part of which was alcoholic) I am adding seven more, making a total of fifteen species, placed in nine genera and four families.
SERICOSTOMATIDB
Gcera fijiana Bks.
Besides the type there are specimens from Wainganitu and Mt. Victoria, Viti Levu.
Anisocentropus fijianus sp. nov,
Yellowish, antennae, palpi, and legs pale yellowish, darker on vertex and thoracic notum; fore wings yellowish, with fine short black hairs, but otherwise rubbed; stigma1 area opaque whitish, from behind this is a curved brownish band with irregular edges, extending to hind margin crossing the middle of the discal and the apical half of the median cell, in certain lights it shows a purplish sheen ; hind wings nearly hyaline, with gray hair and fringe.
Fore wings short and broad, nearly as broad as A. fiavi- caput, discal cell only about two-thirds of its pedicel and Ps\che 43:29-16 (1936). hup //psyche einclub nrg/43/43-020 html



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30 Psyche [June-Sept.
hardly longer than s'econd apical cell, fork one back on discal cell hardly width of cell, fork two back on discal cell a little, fork three back on median cell a little, fork four also back on median cell hardly width of cell. Venation of hind wing much like A. flavicaput, except that the cross-vein from medius to fork five is not oblique.
Male genitalia largely covered from above by a broad membraneous plate with emarginate sides, through the emargination projects a slender clavate bristly appendage, there is a slender pointed median piece above this plate. From side is seen a moderately slender lateral appendage, very hairy, especially below; a smooth median piece (also seen from above) projects below the tip of lateral append- age, two slender hairy ventral pieces.
Fore wing 7 mm. long.
From Wainunu, Fiji Islands (W. M. Mann) . Type M.C.Z. No. 22041.
Notanatolica pallida sp. nov.
Yellowish, vertex and thoracic notum more brown ; anten- nse pale, with narrow brown annulations ; palpi yellowish, with gray hair; legs pale yellowish, front tarsi more brown. Fore wings pale, stigma1 area rather dark and back across the anastomosis, two brown streaks at base, one costal, the other between anal veins; hind wings pale and with yellow- ish veins.
In fore wings the discal cell is hardly one half as long as its pedicel ; fork one equals discal cell and has a pedicel two thirds its length, fork three does not quite reach to the cross- vein; the cross-vein from sector to radius is about its length before end of discal cell, the crossl-vein from sector to medius also about its length before end of discal cell, cross- vein from medius to cubital fork a little beyond it; hind wings with no fork one; cross-vein from sector to medius about twice its length before end of discal cell, fork three reaches back about opposite end of discal cell, pedicel one third its. length.
Male genitalia show above a triangular plate at base, a pair of bristly appendages with sub-parallel sides, and



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19361 Trichoptera from the Fiji Islands 31 below there is a smooth piece with bibbed tip; the lateral appendages are rather bro,ad on basal part, smooth, and with a few long bristles toward tip and below, the apical part more slender and hairy, beneath it projects the hooked tip of a spur from the inner basal part.
Fo,re wing 13 mm. lonig.
From Wainganitu, Fiji Islands (W. M. Mann). Type M.C.Z. No. 22042.
Triaenodes dubia Mosely
A rubbed female, 7 mm. long fore wing, agrees very well with the figure of venation; a short fork one, long discal cell, irregular elongate hyaline white mark over much of the anastomosis. From Wainganitu, Fiji.
Triaenodes manni sp. nov.
Yellowish, abdomen slightly brownish, antennae with nar- row ring of brown at apex of each joint,. Fore wings yellow- ish, darker over stigma1 region and back broadly over anas- tomosis, the anastomosis itself being mostly white, some dark along veins toward base of wing, a dark spot at 'base of fork one and on other veins behind this, and beyond a more or less definite dark band across wing, a larger spot near end of cubitus; in female much of the apical area is brownish, and also most of the basal half of wing, the anas- tomosis, however, remains white.
In fore w'ing fork one is much longer than the pedicel, the discoidal cell longer than its pedicel, third apical vein ends a little before tip of wing, no trace of stub to fifth apical vein, but in the field behind the discoidal cell there is a short longitudinal faint line or vein, possibly a remnant of the medius.
The genitalia are much on the plan of 7". bcettcheri Ulmer from the Philippines; the slender superior median piece with the longer slender lateral pieces (both more elongate than in T. bcettcheri), the long slender spine- like processes reaching beyond the lower appendages, and with a slightly out-curved tip; the long median piece is curved down over the end of the lower appendages, and from side as. well as above the tip is broad and rounded (pointed



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32 Psyche [June-Sept.
in T. boettcheri) ; the lower appendages are long, with blunt, ,broad tips (narrowed in T. boettcheri) and from below each is seen to be bilobed at tip, each has above (as in T. boett- cheri) a slender curved process from the base. Length of fore wing 6.5 mm.
From Wainganitu, Fiji Islands (W. M. Mann). Type M.C.Z. No. 22043.
CEcetinella pulchella sp. nov.
Pale yellowish, vertex and a broad median stripe on thoracic notum brown; antennae, palpi, and legs pale. Fore wings tinted with brown on most of the apical half, and behind; in basal part with a broad brown band with irregu- lar edges across over the bases of median and discal cells, and an elongate brown spot before this between the radial sector and the medius; stigma1 region opaque, whitish, with a brown mark near base, and another near tip ; these tend to form bands since the veins behind them are more darkly bordered than the general surface; each apical vein has a dark brown mark at tip, and also at end of anal veins; in some places there are hyaline spots in the brown, mostly along veins in the basal part; hind wings hyaline. The venation is extremely similar to (E. confluens, except that the cross-vein fr'om fork of radial sector to fork of the medius is beyond the end of discal cell (before in confluens), the discal cell is longer than in confluens, extending back almost as far as median cell (much shorter than median cell in confluens), fork one extends a little further back on discal cell, and the end of the median cell is more oblique than in confluens.
The miale genitalia show above three slender, hairy pieces, the lateral ones the broader, and just below is a long-forked smooth process. From the side the lower appendages of the only male are not the same; on right side is a long curved piece, rather broad throughout, but entire at tip, on the left side is a piece which is broadened and forked at tip, the upper fork long, slender and curving upward. Fore wings 5 mm. long.
From Wainganitu, Fiji Islands ( W. M. Mann) . Type M.C.Z. No. 22044.




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1936 ]
Trichoptera from the Fiji Islands
HYDROPSYCHIDE
Hydropsychodes fi jiana Mosely
Many specimens from Wainganitu, Fiji Islands (W. M. Mann) .
Hydropsychodes ruficeps Brauer
Three females from Wainganitu, Fiji (W. M. Mann) . In this species the suibapical spot is further from the outer margin than in H. fijiana, and the submedian spot occupies most of the discal cell (in H. fijiana just before this cell) ; the cross-vein from first anal vein to cubitus is more basally placed than in fijZCLna and is very oblique, and just before it is a small patch of white hair (not shown by Brauer). The dark band above antennae is broader than indicated by Brauer; the fork two goes back on discal cell further than fork one, but hardly as far as in H. fijiana; in the maxillary palpi the joints two and three are about equal, and four plainly shorter.
Hydropsychodes piceus Brauer
One female from Wainganitu, Fiji Islands (W. M. Mann) agrees fairly well with Brauer's description; it is a little larger, fore wing nearly 7 mm. long; the discal cell is much smaller than in H. fijiana, and fork two is scarcely a bit fur- ther back on discal cell than fork one; the cross-vein from first anal vein to cubitus is much more basally placed than in H. fijiana, and is scarcely oblique, fork three is longer than in fijkno, and very slender. In hind wings fork two goes 'back on discal cell two thirds the length of cell, and fork three is longer than in fijmna; the maxillary palpi have joints two, three, and four subequal in length, but four is more slender.
Polyplectropus manni sp. nov.
Head yellowish, vertex scarcely darker, the warts yellow ; palpi and antennae yellowish ; pronoturn yellowish, meso- notum brownish, rather darker on the sides; abdomen pale brown above, venter paler; legs yellowish, spurs scarcely darker. Fore wings pale yellowish brown, with a long dark



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34 Psyche [June-Sept.
streak over stigma1 area to the tip; hind wings rather gray, with scattered black hairs.
In the fore wing the discal cell is over three times as long as broad at tip, fork one shorter than its pedicel, fork two sessile on discal cell, fork three longer than its pedicel, fork four nearly back to end of median cell, fork fiive back to slightly before the end of anal veins ; in hind wings fork one is very short, fork two back almost to cross-vein, fork five back to the cross-vein.
Male genitalia show a slender median superior piece, with a spine at each apical corner, the lateral appendages are broad at base, tapering, somewhat abruptly above near middle, and at tip with a slender, apparently flexible, sinu- ous part, this appendalge is very 'bristly; the lower append- ages are somewhat shorter, broad and heavy, with rounded tips, from below they are divergent; between is a short, slender penis with enlarged tip.
Fore wings 8 4.6 mm., $ 7 mm.
From Wainganitu, Fiji Islands (W. M. Mann). Type M.C.Z. No. 22045.
Polyplectropus fi jianus sp. nov.
Head yellowish, vertex scarcely darker; palpi and anten- nse pale yellowish, latter rather heavy ; pronotum pale yel- lowish, mesonotum reddish brown, except lobes in front of the wings, which are yellow; abdomen dark brown, genitalia pale ; legs (including spurs) pale yellowish. Fore wing yellowish brown, costal and especially the stig- ma1 region much darker; hind wings nearly hyaline. In the fore wings the discal cell is nearly three times as long as broad at tip, fork one with moderately long pedicel, fork two back a little on discal cell, fork three with a long pedicel, fork four reaching only a little basally of fork three, fork five almost back to mediocubital cross-vein. Genitalia with a slender superior median appendage, seen from side the tip upcurved; lateral appendages with a supe- rior subbasal process and a sharp curved tip; inferior appendages long and thick, on the upper edge a little beyond middle is a long curved hook or tooth.
Fore wings 8 5 mm.




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19361 Trichoptera, from the Fiji Islands 35 From Mt. Victoria, Viti Levu, Fiji Islands (W. M. Mann) . Type M.C.Z. No. 22046.
Chimarrha signata sp. nov.
Head pale, a large triangular black spot between ocelli; palpi pale brown ; antennae dull yellowish ; pronotum pale ; mesonotum brown, except the yellow scutellum; legs dull yellowish, spurs brown.
Fore wings brown, uniform, except for a large hyaline- white spot in middle, over the discal and median cells and the space between them; hind wings brown in apical and costal parts, elsewhere nearly hyaline. Fore wings with discal cell hardly twice as long as broad, the radial sector just before it slightly curved, and the radius above the dis- cal cell is also a little curved; forks one and two sessile on discal cell, fork three very much shorter than pedicel, fork five opposite base of discal cell.
In hind wings fork one is
extremely short, fork two back to discal cell, fork three also extremely short.
Male genitalia show the lower appendages swollen near middle on outer side, the apical part small, pointed, and very hairy; from above the lower appendages show a sub- basal projection tipped by stiff bristles, between these proc- esses are two long slender dark rods.
Fore wings 4.3 mm. long.
From Taviuni, Somo Somo, Fiji Islands (W. M. Mann). Tme
Fig. 1.
Fig. 2.
Fig. 3.
Fig. 4.
Fig. 5.
Fig. 6.
Fig. 7.
Fig. 8.
Fig. 9.
Fig. 10.
Fig. 11.
M.C.Z. No.
EXPLANATION OF PLATE 2
Triasnodes manni, genitalia, above.
Oecetinella pdchella, forewing.
Notanotolica pallida, genitalia, side.
Trieenodes manni, genitalia, side and below. Oecetinella pulchella, genitalia, side, above, and left clasper. Notanotolioa pallida, genitalia, above.
Chimarrha signat'a, genitalia, above and below. Polyplectropus fijianus, genitalia, side and above. Polyplectropus manni, genitalia, above and side. Anisocentropus fijmnus, genitalia, side and above. Chimarrha signata, part of forewing.




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36 Psyche [June-Sept.
Psyche, 1936
VOL. 43, PLATE 11.
Banks - Trichoptera from Fiji Islands.




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