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.