Plectrocnemia ambaita, Oláh & Johanson, 2010

Oláh, János & Johanson, Kjell Arne, 2010, Generic review of Polycentropodidae with description of 32 new species and 19 new species records from the Oriental, Australian and Afrotropical Biogeographical Regions 2435, Zootaxa 2435 (1), pp. 1-63 : 12

Plectrocnemia ambaita , new species

Figures 4–6

Diagnosis: This species is most similar to P. eber from which it is separated by the presence of dorsal paraproctal processes each supplied with a small, caudad-oriented 2nd spine-like process; the ventral paraproctal subphallic sclerites that are modified into a short ridge fused to the inner surface of the cerci; the phallic apparatus being very broad, with only a single spine; and the phallotheca has a right-angled lobe on the dorsum.

Description: Male. Body uniformly brown. Maxillary palp formula (I,II)-IV-III-V, 3rd segment inserted subapically on lateral surface. Forewings brown, marbled, with length 11.0 mm. Discoidal cell closed in both forewings and hind wings; forewings each with median cell closed. Forewings each with apical forks 1, 2, 3, 4, and 5; hind wings each with apical forks 1, 2, and 5.

Male genitalia. Sternite IX subtriangular, with right-angled ventroapical corner in lateral view ( Fig. 4 ), dorsoapical part connecting sternite IX to fulcrum and to small tergite IX; small, tall, rounded plate of tergite IX partly covered by sternite IX. Segment X visible as transparent, membranous lobe projecting posterad, with long terminal pilosity; membranous continuation of sclerotized plate of tergite IX together with sclerotized tergite VIII forming dorsal roof over phallic apparatus. Setose cerci forming tall, foliaceous plate covering almost entire paraproctal complex. Paraproctal complexes fused to cerci, modified to guide phallic apparatus; dorsal part on each side, producing heavily sclerotized, basal body of dorsal paraproctal process, apparently separated from ventral part, fused also to membranous segment X. Dorsal paraproctal processes well-developed, each arising from more dorsal base of paraproctal complex, forming long, upward arcuate, spine-like, process embrancing phallic apparatus. Paraproctal subphallic sclerite fused to lower corners of cerci and to lower apical halves of tall tergite IX, forming modified pair of vertical ridges on inner cercal surfaces. Gonopods monolobed, long, almost parallel-sided both in lateral ( Fig. 4 ) and ventral views ( Fig. 5 ); dorsobasal processes small, tooth-like. Phallic apparatus ( Fig. 6 ) very large, associated with pair of dorsal paraproctal processes and pair of ridges of modified subphallic sclerite; phallobase ending in large apicodorsal lip; right-angled dorsal hump near mid-length; large, single, spine present in endophallus.

Holotype male: MYANMAR: NE, Kambaiti 7000 ft, 4–9.vi.1934 [R. Malaise]—( BMNH, Coll. Malaise, B.M. 1938-258).

Paratypes: Same data as holotype, except 8.vi.1934 [R. Malaise]— 1 male ( BMNH, Coll. Malaise, B.M. 1938-258); same data as holotype, except Kambaiti 2000 m, 17.v.1934 [R. Malaise]— 2 males ( BMNH, Coll. Malaise, B.M. 1938-258); same data, except 11.vi.1934 [R. Malaise]— 1 male ( OPC) ; same data, except 4.iv.1934 [R. Malaise]— 4 males ( BMNH, Coll. Malaise, B.M. 1938-258) .

Distribution: Myanmar.

Etymology: Ambaita, derived from Kambaiti, the type locality.

Figures

FIGURES 4–6. Plectrocnemia ambaita, new species, holotype. 4—genitalia, left lateral; 5—right gonopod, ventral; 6— phallic apparatus, left lateral.