Psychomyia pinsuwanae Laudee and Malicky, 2018

Laudee, Pongsak & Malicky, Hans, 2018, Five new species of Caddisflies (Trichoptera: Insecta) from Upper Tenasserim Range, Thailand and Myanmar, Zootaxa 4524 (3), pp. 351-358 : 354

Psychomyia pinsuwanae Laudee and Malicky n. sp.

Figs. 12–15

Type material. Holotype male ( PSUNHM). Thailand: Prachuap Khiri Khan Province, Pala U waterfall, Kaeng Krachan National Park, Hua Hin , 12°32’47”N, 99°28’19”E, ca. 357 m a.s.l., 23 October 2016, leg. Pongsak Laudee.

Paratypes. Same data as holotype, 5 males ( PSUNHM)

Etymology. Named for Asst. Prof. Dr. Sirirat Pinsuwan who was the Dean of Faculty of Pharmacy, Prince of Songkla University, Hat Yai Campus.

Description. Length of each male forewing 3.0–3.5 mm (n = 9); specimens in alcohol with head, thorax, abdomen, forewings, and legs dark brown.

Male genitalia ( Figures 12–15 ). Segment IX membranous dorsally; sternum IX mango-shaped in lateral view, rounded basodorsally and anteriorly, protruding apicoventally to rounded apex. Preanal appendages large, in lateral view square basally, tubular apically, with apex round; in dorsal view bird-head-shaped, with strong setae apicoventrally. Tergum X membranous. Inferior appendages tubular, protruding ventrocaudad, rounded apically, each with long straight spine on its inner side. Phallus long vertically, arched anteriorly with acute apex, branched with short acute apex basally in lateral view.

Diagnosis. The male genitalia of the new species very closely resemble those of P. amphiaraos Malicky and Chantaramongkol 1997 and other species similar to P. capillata Ulmer 1910 found in Thailand, including P. kuni Malicky and Chantaramongkol 1993 , P. kiskinda Malicky and Chantaramongkol 1993 , and P. lak Malicky and Chantaramongkol 1993 . However, P. pinsuwanae n. sp. can be distinguished from these by characters of the inferior appendages. The inner (dorsal) branch of each inferior appendage has a long, straight spine on its inner side without spinulets. Psychomyia amphiaraos ( Fig. 16 ) has no such inner spine, and in the other species this spine has various short spinulets.

Figures

FIGURES 12–16. Male genitalia of Psychomyia spp. 12–16, Psychomyia pinsuwanae n. sp.: 12, left lateral; 13, dorsal; 14, ventral; 15, right inferior appendage, mesal. 16, right inferior appendage of P. amphiaraos Malicky and Chantaramongkol 1997, mesal. Inf = inferior appendage (paired), Pre = preanal appendage (paired), SIX = sternal portion of segment IX, Pha = phallus.