Agapetus (Synagapetus) ranohelae, Gibon, 2017

Gibon, François-Marie, 2017, Presence of the Glossosomatidae in Madagascar, with description of two species (Trichoptera), Zootaxa 4317 (1), pp. 174-178 : 175-176

Agapetus (Synagapetus) ranohelae n. sp.

Figs 2 A–2E

Holotype: Male, mounted on five slides. MADAGASCAR: Toliara Prov., Andohahela National Park, Andranohela River , 24°35'47"S, 46°44'25"E, 850 m a.s.l., 27.xi.1995, J.-M. Elouard & A. Ralaiteferana leg. ( CBGP).

Diagnosis. Cf. Agapetus alarum n. sp.

Description. Three ocelli. Tibial spurs 2/4/4. Maxillary palps each 5-segmented, segments 1, 2, and 5 short, segment 2 enlarged distally, segment 3 clearly longer; labial palps each 3-segmented. Forewings each with length 4.7 mm, maximum width 1.6 mm; R1 and Sc fused at their distal extremity. Hindwings each with length 3.6 mm, maximum width 1.1 mm; smaller and narrower with reduced venation. R2+3 unforked, M1+2 forked near distal extremity, A3 fused with A2. Sternite V with lateral fold and internal gland, similar to those described by Ross (1956) for A. cocandicus McLachlan 1875 . Sternite VI with long ventral projection. Segment IX wide, large, synsclerotized. Preanal appendages short and wide. Inferior appendages each single-segmented, as long as tergum X, in lateral view wide, roughly rectangular, with setae but without sclerotized denticles, spines, or small bumps on inner face. Tergum X almost entirely split into pair of lateral elements; when viewed laterally, roughly triangular with apex slightly curved dorsad and short ventrobasal bump; when viewed dorsally, distal lobe with denticulate external edge and hooked extremity. Phallic apparatus long and slender.

Etymology. Referring to the river Andranohela (type locality).

Habitat and distribution. The new species was collected from a small brook, in pristine rainforest. Endemic to Madagascar and recorded from only Andohahela National Park ( Fig. 3 ).

Figures

FIGURE 3. Ecological profile and known locations of Agapetus alarum n. sp. (circles) and Agapetus ranohelae n. sp. (stars) in Madagascar.

FIGURE 2. 2 A – 2 E, Agapetus ranohelae n. sp.: 2 A, wings; 2 B, head, meso- and metathorax, dorsal; 2 C, left palps, left lateral; 2 D – 2 E, male genitalia: 2 D, left lateral; 2 E, dorsal. Scale bars: genitalia and head 0.25 mm; wings 1 mm.