Phanoperla uchidai, Sivec & Stark, 2010

Sivec, Ignac & Stark, Bill P., 2010, Seven New Species Of Phanoperla Banks From Vietnam And Thailand (Plecoptera: Perlidae), Illiesia 6 (10), pp. 98-112 : 106-109

Phanoperla uchidai sp. n.

( Figs. 24-32 )

Phanoperla lisu: Uchida & Yamasaki, 1989:141 . Not Stark, 1983

Material examined. Holotype ♂ and 59♂, 46♀ paratypes from Thailand, Kao Soi Dao National Park , 102° 10’ N, 13° 06’ E, 400 m, 22-23 April 1996, H. Malicky, P. Chantaramongkol ( PMSL). Additional paratypes: Thailand: Chiang Mai Province, Chiang Dao, River King, 4 April 1993, I. Sivec, Horvat, 1♂, 1♀ ( PMSL). Chiang Mai Province, Doi Inthanon National Park , Bang Khun Klang , 98° 32’ N, 18° 32’ E, 1200 m, 10-17 July1989, H. Malicky, P. Chantaramongkol 1♀ ( PMSL). Same location, 17-26 July 1989, H. Malicky, P. Chantaramongkol, 1♀ ( PMSL). Lamphun Province, Mae Ping National Park, Huai Mae Hat , 98° 52’ N, 17° 40’ E , 660 m, 5-10 September 1991, H. Malicky, 5♂, 3♀ ( PMSL) .

Adult habitus. Biocellate, ocelli large and nearly touching. Occiput dusky behind ocelli and median suture line dark; frons dusky without distinct dark pattern; M-line pale ( Fig. 24 ). Pronotum pale with darker rugosities.

Male. Forewing length 8-8.5 mm. Tergum 8 with low, broad, mesal lobe. Tergum 9 with lateral patches of sensilla basiconica set on low mounds and small median patch set in depression between lateral patches ( Fig. 25 ). Hemitergal processes short, acute and curved slightly inward at tips. Sclerite of aedeagal tube broadly covering dorsal surface from midlength to near apex, and extending around dorsolateral margins; aedeagal sac with lateral patches of spines near base and a large apical patch which begins near midlength ( Figs. 26-28 ); apex long and tapered, largest spines form a partial ring near mid point of patch.

Female. Forewing length 9-9.5 mm. Subgenital plate slightly produced and deeply notched, dividing plate into a pair of small lobes ( Fig. 29 ). Lobes of plate bear several long thin setae and a few thick setae occur anterior to notch.

Egg. Oval, with short, wide collar, distinctly constricted at base; egg length ca. 363 µm, width ca. 221 µm, collar length ca. 29 µm, collar width ca. 106 µm ( Fig. 30 ). Sides of collar with several vertical ridges which extend onto egg body ( Fig. 31 ). Lid covered completely with fine punctations below micropylar line ( Fig. 32 ). Micropyles with slightly raised rim along lower surface.

Larva. Unknown.

Etymology. The patronym honors our friend and colleague, S. Uchida for his important contributions in the study of Asian Plecoptera .

Diagnosis. The aedeagus of this species is similar to that of P. lisu Stark but in that species the largest sac armature consists of lateral rows of spines which become less prominent apically.

Figures

Figs. 24-29. Phanoperla uchidai. 24. Head and pronotum. 25. Male terminalia, dorsal. 26. Aedeagus, lateral. 27. Aedeagus, dorsal. 28. Aedeagus, ventral. 29. Female terminalia.

Figs. 30-35. Phanoperla eggs. P. uchidai (30-32), P. vietnamensis (33-35). 30. Entire egg, lateral. 31. Detail of collar and anchor. 32. Detail of lid. 33. Entire egg, lateral. 34. Detail of collar and anchor. 35. Detail of lid.