Hemacroneuria malickyi, Stark & Sivec, 2008

Stark, Bill P. & Sivec, Ignac, 2008, Systematic Notes On Kiotina Klapálek And Hemacroneuria Enderlein (Plecoptera: Perlidae), With Description Of Four New Species, Illiesia 4 (17), pp. 161-175 : 170-171

Hemacroneuria malickyi sp. n.

( Figs. 34–40 )

Material examined. Holotype ♂ and 2 ♂ and 2 ♀ paratypes from Vietnam, Vinh Phu Province , Tam Dao, 800-1000 m, 21 ° 28’ N, 105 ° 38’ E, 19 May-13 June 1995, H. Malicky ( PMSL). Additional paratype: Vietnam: Vinh Phu Province , Tam Dao, 29 May 1995, C.F. Lee, 1 ♀ ( PMSL) .

Adult habitus. Triocellate, but anterior ocellus minute. General color dark brown. Head brown but M-line pale; interocellar area darker ( Fig. 34 ). Pronotum brown but median area and some scattered rugosities paler. Wings brown, costal field pale brown. Legs, cerci and antennae brown.

Male. Forewing length 20 mm. Tergum 10 with posterolateral tubercles covered with short, peg-like setae; median field sclerotized between tubercles but a small membranous oval area located near anterior margin ( Fig. 35 ). Paraprocts broadly triangular but sharply pointed and incurved at tips. Aedeagus not fully everted, but membranous and covered with fine spines and microtrichia.

Female. Forewing length 25 mm. Subgenital plate projecting over all or most of sternum 9; posterior margin notched ( Fig. 36 ). Vagina membranous, slender without armature, similar to H. marginalis .

Egg. Length ca. 0.40 mm, width ca. 0.34 mm. Outline oval to sub-spherical, collar a small, slightly projecting button ( Figs. 37, 39 ). Chorion coarsely punctate throughout ( Figs. 37-40 ); micropyles sessile, set on ridges surrounding chorionic punctations ( Fig. 37 ).

Larva. Unknown.

Etymology. The patronym honors H. Malicky, collector of the holotype and numerous other interesting specimens from this region.

Diagnosis. This species can be distinguished from H. marginalis (described below) on the basis of pronotal color pattern and by details of male tergum 10. In H. marginalis a membranous band divides tergum 10 along its entire length, whereas in H. malickyi the posterior area of tergum 10 is sclerotized. It can also be distinguished from H. violacea one the basis of the peg-like setae found on male tergum 10; these structures are absent in H. violacea .

Figures

Figs. 34-36. Hemacroneuria malickyi structures. 34. Head and pronotum, 35. Male terminalia, dorsal, 36. Female terminalia, ventral.

Figs. 37-40. Hemacroneuria malickyi eggs. 37. Entire egg, lateral, 38. Anchor, 39. Collar, 40. Anterior pole.