Cryptoperla Needham 1909
Creators: name: Stark, Bill P.
name: Sivec, Ignac
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Plecoptera
Peltoperlidae
Cryptoperla

description: Provisional key to <i>Cryptoperla</i> males (<i>C. meyi, C. sinensis</i> and <i>C. torva</i> unknown) 1 Basal cercal segment with apical spur or projecting lobe or lobes on inner margin (Fig. 2) ……………………………………………………… 2 1’ Basal cercal segment without projecting apical spur or lobes ……………………………………. 17 2 Cercal spur curved dorsad (Fig. 2) ……………. 3 2’ Cercal spur or lobes straight or directed mesad or ventrad ……………………………………….…... 5 3 Cercal spur simple, upturned abruptly at an approximate right angle (Fig. 16) ………… <i>hubleyi</i> 3’ Cercal spur multidentate (Fig. 2); curvature gradual …………………………………..……….. 4 4 Cercal spur with 1-3 long teeth ………….... <i>karen</i> 4’ Cercal spur with ca. 10 short teeth (Fig. 2) ……………………………………..…..…… <i>curvata</i> 5 Cercal spur at least partially sclerotized, usually spine-like, acute but sometimes multidentate … 6 5’ Cercal spur or lobe unsclerotized, usually blunt, rounded or truncate and often bearing an apical tuft of setae ……………………………………... 13 6 Cercal process a single, often acute spur ………. 7 6’ Cercal process multidentate ……………………. 12 7 Cercal spur broad to midlength, abruptly narrowed to acute tip; spur parallels cerci and slightly exceeds subsequent five segments in length ……………………………………… <i>stilifera</i> 7’ Cercal spur tapered throughout length; spur divergent from cerci and not exceeding next three segments in length..……………………………... 8 8 Known from mainland Asia ……………………. 9 8’ Known from Asian islands ……………………... 10 9 Cercal process bicolored, transparent apically; known from Thailand ……………………….. <i>akha</i> 9’ Cercal process uniformly pigmented; known from Yunnan and Sichuan, China ………...…… <i>aculeata</i> 10 Known from Ryukyu Islands ………. <i>ishigakiensis</i> 10’ Known from Taiwan …………………………….. 11 11 Cercal spur unpigmented, transparent, usually blunt and thumb shaped; ventrolateral aedeagal lobes move than twice as large as mesal lobes and moderately divergent from midline ……. <i>uchidai</i> 11’ Cercal spur usually pigmented and acute; ventrolateral aedeagal lobes slightly larger than mesal lobes and strongly divergent from mesal lobes ……………………………..……… <i>formosana</i> 12 Cercal spur spatulate with serrate apex … <i>chiangi</i> 12’ Cercal process with a major spur and 3-10 smaller dorsal spines ………………………….…... <i>fraterna</i> 13 Process of basal cercal segment consists of 4-5 short, truncate lobes with apical hair tufts …… <i>dui</i> 13’ Process of basal cercal segment a single, simple structure with or without apical hair tufts..… 14 14 Apex of process about as wide as base; known from Fujian Province, China …………... <i>fujianica</i> 14’ Apex of process narrowed apically; known from Japan, Assam or Thailand …………………….. 15 15 Cercal process with 1-4 terminal setae; known from Assam or Thailand ……………………… 16 15’ Cercal process very hairy at apex; known from Shikoku, Japan ………………………… <i>kawasawai</i> 16 Cercal process about 3X long as wide; apex with 2-3 long setae; cercal segment 2 with a short dorsal process; known from Thailand..… <i>bisaeta</i> 16’ Cercal process slightly longer than wide; apex with 1-2 short setae; cercal segment 2 without dorsal process; known from Assam ……….... <i>kali</i> 17 Apex of basal cercal segment slightly swollen, producing a rounded process sometimes overlapping base of 2 nd segment …………….. <i>naga</i> 17’ Apex of basal cercal segment unmodified ……. 18 18 Known from Japan or Taiwan …………………. 19 18’ Known from mainland Asia ……………………. 20 19 Aedeagal apex with a pair of lateral lobes and a wide truncate mesal lobe; known from Japan ………………………………………………. <i>japonica</i> 19’ Aedeagal apex with a large rounded lobe and two subapical pairs of lateral lobes; known from Taiwan …………………………………….. <i>klapaleki</i> 20 Body length ca. 18 mm; tergum7 with a triangular mesal lobe overlapping most of tergum 8; known from China …………………………………… <i>obtusa</i> 20’ Body length ca. 15 mm or less; tergum 7 without mesal lobe; known from India, Nepal, Assam or Thailand …………………………………………. 21 21 Basal cercal segment less than 3.5X long as wide; cercal setal fringe sparse on inner margins …. <i>meo</i> 21’ Basal cercal segment at least 4X long as wide; cercal setal fringe often well developed on inner margins ……………………………..……………. 22 22 Basal cercal segment about 4.5X long as wide; aedeagal armature without dense, paired setal patches ……………………………….. <i>pentagonalis</i> 22’ Basal cercal segment about 5-6X long as wide (Fig. 40); aedeagus armed with one or more mesal setal patches near base of ventroapical lobes (Fig. 42) ………………………………………………….… 23 23 Aedeagus with a pair of dense mesal setal patches near base of ventroapical lobes; known from Assam ……………………………………….. <i>kumari</i> 23’ Aedeagus with a single, broad setal patch near base of ventroapical lobes (Fig. 42), or a pair of sparse widely separated patches (Fig. 28); known from Thailand …...……………………………… 24 24 Ventral aedeagal setae grouped in a single, wide patch (Fig. 42); apical aedeagal section much wider than base; basal cercal segment about the same width throughout (Fig. 40) ……….. <i>simplex</i> 24’ Ventral aedeagal setae grouped in a pair of widely separated, sparse patches (Fig. 28); apical aedeagal section not conspicuously wider than base; basal cercal segment slightly swollen near midlength (Fig. 27) ………………….………. <i>kosai</i>
description: Published as part of <i>Stark, Bill P. &amp; Sivec, Ignac, 2007, New Species And Records Of Asian Peltoperlidae (Insecta: Plecoptera), pp. 104-126 in Illiesia 3 (12)</i> on pages 116-117, DOI: 10.5281/zenodo.4754627