Chimarra mulanjae, Wahlberg & Espeland & Johanson, 2014

Wahlberg, Emma, Espeland, Marianne & Johanson, Kjell Arne, 2014, Seven new species of Chimarra (Trichoptera: Philopotamidae) from Malawi, Zootaxa 3796 (3), pp. 579-593 : 589

Chimarra mulanjae , new species

( Figs 11 , 39–44 )

Diagnosis. The male of this species is separated from those of other Afrotropical species by the presence of pairs of short, thick, curved phallic spines. The posterior phallic spines of C. gassa Johanson 2010 , Madagascar, are similar to those of C. mulanjae , but the anterior phallic spines of C. gassa are less sclerotized and lack the dorsal and ventral curving as seen in C. mulanjae ; and the inferior appendages of this new species are more elongated, with divided posterior process. The inferior appendages are also similar to those of C. psittaca , new species, but in C. mulanjae the inferior appendages have a divided apical process and a blunt subapicomesal process directed mesad.

Description, male: Colour (in alcohol): Head yellow with dark brown triangle between ocelli, eyes black; head setal warts light brown; antennae brown; thorax yellow; thoracic setal warts light brown; wings, tibia, tibial spurs, tarsi and abdomen dark brown. Forewings each 5.5 mm (n=3) long, length over width ratio 3.0; small; pale hyaline spots distributed as in Fig. 11 ; discoidal cell about 3 times longer than wide, originating shortly before mid length of wing, median cell slightly shorter; base of fork I originating after crossvein r at distance half length of crossvein r; nygma situated at base of fork II; fork III 4.4 times longer than its width. Hind wings each 4.5 mm (n=3) long, length over width ratio 2.6; anterior margin strongly curved.

Genitalia: Segment IX ventrally with distinct posteroventral process, posterolateral margins each with small triangular projection immediately beneath preanal appendages. Preanal appendages large, oval, with lobate to crenate margins. Tergum X divided into two pairs of lobes; mesal lobes large, in lateral view almost at tall as long, quadrate; in dorsal view each divided apically into two acuminate branches; lateral lobes sclerotized along lateral margins, in dorsal view curved laterad distally, each with strong sclerotized lateral tooth at mid length. Inferior appendages nearly bean-shaped in lateral view, each with shallow triangular basoventral process; appendages bifurcate apically in dorsal view; margins fringed with setae, inner margins darkly sclerotized; blunt, short, subapical process curved mesad in ventral view. Phallic apparatus with anterior half bulbous; in lateral view distal half parallel-sided; in ventral view distal half narrowing toward apex; with two pairs of spines: anterior pair equal in length with dorsal spine curving dorsad and ventral spine curving ventrad; posterior pair smaller and about half as long as anterior spines, each slightly curved laterad.

Male holotype: Malawi: Mulanje: Ruo River below power station, S15.97188°, E35.65463°, 870 m, light trap, 12 November 2012, Loc # Ma 40a, leg. M. Espeland, S. Dupont and R. Murphy ( Fig. 1 , locality #5) .

Paratypes: Same data as holotype: 3 males, 1 female .

Etymology. Mulanjae, after the region of the type locality: Mulanje.

Figures

FIGURE 1. Map of Malawi showing locations of collection. Basemap provided by Esri et al. (2013).

FIGURES 7–13. Right wing, dorsal. 7—C. zombaensis, new species, holotype; 8—C. flaviseta, new species, holotype; 9—C. chichewa, new species, holotype; 10—C. circumverta, new species, holotype; 11—C. mulanjae, new species, holotype; 12—C. psittacus, new species, holotype; 13—C. calidopectoris, new species, holotype.

FIGURES 39–50. Chimarra new species, male genitalia. 39–44, Chimarra mulanjae, new species, holotype: 39—genitalia, left lateral; 40—phallic apparatus, left lateral; 41—phallic apparatus, dorsal; 42—genitalia, dorsal; 43—right inferior appendage, dorsal; 44—right inferior appendage, ventral. 45–50, Chimarra psittacus, new species, holotype: 45—genitalia, left lateral; 46—phallic apparatus, left lateral; 47—phallic apparatus, dorsal; 48—genitalia, dorsal; 49—right inferior appendage, dorsal; 50—right inferior appendage, ventral.