Tagalopsyche kjaerandseni, Holzenthal, Ralph W. & Andersen, Trond, 2007

Holzenthal, Ralph W. & Andersen, Trond, 2007, Review of the caddisfly genus Tagalopsyche with the description of new species and a related new genus (Trichoptera: Leptoceridae: Mystacidini), Zootaxa 1483, pp. 1-32 : 22

Tagalopsyche kjaerandseni , new species

Fig. 1–2 , 15

This, only the second African species, possesses a genitalic morphology unique within the genus. The new species is easily separated from all the other species in having the posterior extension of sternum IX deeply excised, forming paired processes; the dorsal sclerotized process of sternum IX large, heavily sclerotized, and excised mesally; and in having tergum X with a pair of lateral processes. In addition, the lateral flanges of the phallicata are especially heavily sclerotized in this species.

Adult. Length of forewing: male 6.6–6.9 mm (n=3). Color brown (in alcohol).

Male. Abdominal segment IX annular, setose, especially ventrally; in lateral view anterior and posterior margins nearly parallel, shortest at insertion of preanal appendage; tergum IX short, produced posteriorly as small shelf; posterior extension of sternum IX long, approximately equal in length to sternum, in ventral view base wide, apex deeply excised, forming paired processes, paired processes subulate, apices obliquely truncate, apical margin with deep U-shaped excision, in lateral view digitate, tapering to acute apex; posterior process of segment IX extended dorsad to form heavily sclerotized projection, surface smooth, in caudal view projection triangular, lateral margins deeply concave, in lateral view subtruncate, in ventral view rounded, excised mesally. Preanal appendage lanceolate, heavily setose, shorter than segment X, apex subacute. Inferior appendage spatulate, setose, apex strongly curved mesad, in lateral view subrectangular, dorsal edge slightly convex, ventral edge straight, mesolateral surface without processes, basoventrally with rounded process bearing apical setae, mesobasally with subtriangular process bearing apical setae. Tergum X saddleshaped, broad, about 1/2 width of segment IX, in lateral view triangular, apex with pair of triangular, subacute, lateral processes, dorsolaterally with pair of prominent, digitate protuberances, in dorsal view apex trifid. Phallic apparatus short, compact; phallobase tubular, apparently fused with phallicata, basoventrally without flange, but phallobase itself articulating with base of fused inferior appendages; phallicata strongly down turned apically at nearly 70 degrees to phallobase, apex of phallicata with straight, heavily sclerotized lateral flange and mesal membranous region, dorsolateral corners rounded, not projecting; parameres absent; phallotremal sclerite not discernable.

Female. Unknown.

Holotype male: GHANA: Volta Region: Agumatsu Waterfalls, Wli, Station 12, 16.xi.1993, NUFUproject ( UMSP 000108205) ( UMSP).

Paratypes: GHANA: Volta Region: River Uwue south of Lipke Mate, 6.xi.1995, light-trap, NUFUproject — 1 male ( UMSP); Eastern Region: Bothi Fall, 14.x.1994, light-trap, NUFU-project — 1 male ( ZMBN).

Distribution. Ghana.

Etymology. We are pleased to name this new species in honor of our friend and colleague Dr. Jostein Kjaerandsen who collected it and in recognition of his important work on the caddisflies of Ghana.

Figures

FIGURE 15. Tagalopsyche kjaerandseni, new species. Male genitalia: A—abdominal segments IX & X, lateral; Bsame, dorsal; C—abdominal segment IX, ventral; D—inferior appendages and process of sternum IX, caudal; E—phallic apparatus, lateral; F—same, caudal.

FIGURE 1 – 2. Tagalopsyche kjaerandseni, new species. 1. Adult: A—head and thorax, dorsal; B—head, left lateral. 2. Wings: A—forewing; B—hind wing.