Rev. Siol. Trop., 46(3):105�71S: 1998
' , '" (, §, P ';; F.eceiYed22-X-1997.(::9rrec�e418-V-1998. Accepted 17-VI-1998, .eHí·' ªfi�GltatemitM�' .·:'I1fh�IJaryk�fO,,�ta was briefly.dést;ri�ecl '.�R'(li¡�.yat!tl;�/ Nifedham & ;W�stfall/(195S) " :'C:iT;¡,'f' ,'�.,,-' d ·On.YOI1l1g slÍ@im�nS','b4t':fHe.it¡VgUré'iS. ��,easiW COIfip}it�í�,"'r0 full'*gtpwnii,latvs;e of " "dth��Aeshtiitl#� !j' . ' ,in the:s�ewótk...... ;ítete:i�t d' ...... ' a',igecond' species· . ,, (j�kih&e8�hf!jJ!'fnal�4;isp,. now� · ' AML; AL present on 3-7; ML present on 3-8; segments 9+ 1 O; in dorsal view slightly fusiform PL absent in all segments except in 2; 9 dark; 10 (Fig. 2b), with interior margin apically sinuated, with two Iarge dorsal green spots. ending in an acute distal spine and with an ele StructDral characters - Auricles with 11 (L) vated carina at 0.60 its length; the inner margin and 9 (R) denticles; anterior laminae with spine of carina with 4 denticles, the posterior, the extending posteriorly almost reaching level of smaller; epiproct roughly triangular in ventral hind margin of the hamular process (Fig. 1). view, extending 0.50 the Iength of cercus, in lat Mesal margins of anterior laminar spine convex eral view with two small teeth directed in anterior half, converging medially at their anterodorsally (Fig. 2a).. posteriorly end. Measurements (mm). -Total length including Dorsum of segment 10 with a dorsoposteri appendages 77.6, abdomen 53.0, cerci 6.1, orly directed robust spine occupying 0.9 the hindwing 51.6, pterostigma 2.4 (FW), 2.5 length of segment (Fig. 2a). Cerci longer than (HW). --- / / L \ \ f \; ¡ \ I \\ ) \ \ / \ \. \ / / 1 \\ / \�/ \� Fig. 1. Details of morphologyof male of Oplonaeschna magna. Ventral view of abdominal segment 1-2 (paratype38). 708 REVISTADE BIOLOGIA TROPICAL a b 2 Fig. 2. Details of caudal appendages of rnale of Oplonaeschna magna. A) Lateral view (paratype 50); B) Dorsalview (sarne). Allotype female- With similarcoloration than Measurements (mm). Total length not inelud male but with the following differences: ing abdominalappendages (Appendages broken) Venatíon: Nodal formula 15:22/24:14 (FW), 71.2, abdomen 52.7, cerci (in paratype #57) 4.5, 14:13/13:12 (HW); triangles 5 celled (FW), 4 in hind wing 53.5, pterostigma FW2.4, in HW 2.7. (HW); supratriangles 5(FW), 3 (leftHW) and 4 Remarks - The following variation was (right HW); anal loop with 12 cells. observed among paratypic series. Venation Abdomen - Segments 1-4 with similar macu (males): antenodals in forewing (FW) 15(36%), lation to those of male, although PO more 14(23%), 13(16%), 16(13%), 17(9%), 18(2%), reduced than in male and withno traces of bluish 12(1%); in hindwing (HW) 15(30%), 16(27%), coloration. Segments 5-7 with AL present but 14(19%), 17(10%), 13(9%), 11(2%), 12(1%), divided in two spots by a brown stripe, ML larg 18(1%),19(1%); postnodals (FW) 20(31%), er thanin male, PO smalland only visible in 5-6; 19(24%), 21(17%), 18(14%), 22(5%), 17(3%), seg 8 with traces of AL, but ML fused with PL 16(2%), 23(2%), 13(1%), 24(1%); (HW) forming an elongated spot; an additional spot 12(34%), 13(33%), 14(16%), 11(9%), 15(7%), occupying a point half the way between PO and 17(1%); triangles (FW) 4(56%), 5(42%), 3(1%), PL, 9 and 10 brown unspotted. Caudal 4(1%); (HW) 4(88%), 5(7%), 3(5%); supratrian appendages as in Fig 3. Cerci longer than seg gles (FW) 4(55%), 5(32%), 3(8%), 6(4%), ment 9, lanceolated (Fig. 4)(broken in allotype, 2(1%); (HW)3(70%),4(29%), 2(1%); analtri an figure drawingfmm paratype #57). gles 3(77%), 4(19%), 5(3%), 2(1%); anal loop GONZALEZ & NOVELO: Oplonaeschna magna sp. nov. (Odonata:Aeshnidae) 709 10(37%), 11(24%), 12(20%), 9(9%), 13(6%), 21(10%), 22(10)%); (HW) 12(45%), 13(33%), 8(3%), 7(1%). Venation (females): antenodals 14(11%), 15(11%); number of cells in triangles (FW) 15(40%), 14(30%), 13(10%), 16(10%), (FW): 4(100%); (HW) 4(100%); in supratrian 17(10%); (HW) 15(40%), 17(20%), 13(10%), gles (FW) 4(56%), 5(44%); (HW) 3(71%), 14(10%), 16(10%), 18(10%); postnodals (FW) 4(29%); in anal loop 11(38%), 10(25%), 19(30%), 18(20%), 20(20%), 16(10%), 12(25%), 9(12%). 3 b 4 Figs. 3-4. Details of morphology of female of Oplonaeschna magna. 3) .Caudal appendages; A) Lateral view (allotype); B) Dorsal view (same). 4) Detall of right cercus (paratype57). 710 REVISTADE BIOLOGIA TROPICAL In a single specimen collected in Metepec, Larva Morelos which has largerpale spots, MD is con (Figs. 5-12) nected with ML on 2-7; AL is connected with ML on 3-8 and ML is fused with MD on 3-7. Material examined: 13 exuviae (8 cJcJ, 5 1 larva last instar. MEXICO: Measurements (mm). Males: total length aver Q Q), (Q) MORELOS state; Tepoztlán, 11/0ct./1985, (R. age (range in parentheses) 76.4 (69.7-80.2), Novelo, E.González). Deposited at IEXA. abdomen 52.4 (47.6-53.6), cerci 6.1 (5.5-6.6), Description: Body yellowish-brown, with hindwing 50.2 (48.9-54.2), pterostigmata (FW) roughly granulated and hairless skin. Legs ringed 2.02 (1.9-2.8), in hindwing 2.3 (1.9-3.0). with pale and dark bands. Abdomen lanceolate Females: totallength 69.2 (68.8-69.9), abdomen (Fig. 5). 51.3 (50.5-51.6), hind wing 55.9 (53.2-58.6). 6 a b 5 Figs. 5-8. Details of morphoJogy oC the Jarva of Oplonaeschna magna. 5) Lastinstar larva (Q), dorsalhabitus. 6) Right anten na, dorsal view; 7) MandibJes,internal view. A) right;B) Jeft. 8) Galeolacinia,dorsal view. GONZALEZ & NOVELO: OplonaeschnaTliag'lia sp; nov. (Odonata:Aeshnidae) 711 Head: wider, than long with abundant; minute, wíth71ong, stbllt, curved teeth precedédbasally spinil'orm setae exc.ept on ahtedypeus, whic.h is ,by tobust long, Setae (Fig. 8). Labitim: glabrous; posterior margin ol'oc.ciput c.onc.ave, Prementum-pbstmeritum articulation reaching c.ephalic. lobes rounded� CompoUhd eyes large, the posterior margin of mesocoxae. Prementum prominent. Labrum trapezoidal, profuselyc.ov� longer than wide, narrowing basally; lateralmar ered with spiniform setae· exc.epting for a small, gins convex al apical 030, remainder more or circular, median area. Ant€nnae short,7-jointed, less straight, with a double row of spinifortn third illltennomere thelongest; relativelength of setae(Fig. 9a). Palpiwith apical10be squareIy ánteJulomeres: 0.5, O.6, LO; OA,0.5, 0.4, 0.3; truncated, rouhded on superioranglebutwith a scape and pedicel darkerthan flagellum(Fíg. 6). small,blunt tooth on inferior one (Fig.9b); inter Mandibles biramous (Fig. 7),extemal branch nal margin finely serrate,externa lone with spini" with five and four cuspids on right and left form setae. Movable hook short,shorter than pal mandibles respectively,intemal branch in both pus. Ligulamoderately prominent, its distal mar mandibles with two rohust teeth fused tnedially gin covered with'abundant pilliform setae,medi bya transversal ridge. Maxillae: .galeolaciniae anc1eft deep, c10sed (Fig. 10). 9 b Hgs. 9clO. Detailsof morpholog ofthe larvaQfOplonaeschna magn'a;9)Prementum. , !\}Dors¡¡\yiew;B) Right palpus, ven� :y ' . ' lraI view. lO}Ligula, dorsal view. 712 REVISTA DE BIOLOGIA TROPICAL Thorax profusely covered with minute spini abundant minute spiniform setae; posterior mar forrn setae. Proepistema, proepimera, and lateral gins of tergites 2-10 with a row of obtuse, red, margins of pronotum projected laterally into a spiniform setae which increase in size gradually blunt-tipped, coruc protuberance; posterior mar fromfront to rearward. Color pattern as in Fig. 5. gin of pronotum widely rounded. Synthorax red Male gonapophyses vestigial; those of female dish-brown with a yellow spot on dorsal end of well developed, the dorsal .ones thelargest (Fig. each lateral suture in last instar larva. Wing pads 11a); lateral gonapophyses convergent at apex, with parallel sides, reaching the middle and pos with spiniform setae on lateral surface andventral terior margin of abdominal segment 4, respec border, the centralones smooth (Hg. 11b). Caudal tively. Legs ringed with alternating pale and dark appendages yellowish-brown, except for reddish bands and with abundant spiniforrn setae; claws brown on the tips. Male (Fig. 12a): Cercus digiti with an epodium. form, parallel-sided but abruptIy narrowed and Abdomen lanceolate, widened just behind the pointed at apical 0.20, with spiníform setae on lat middle (Fig. 5), lacking dorsalprotuberances; lat eral margins. Epiproct parallel sided, ending api eral spines on 5-9, those on 7-8 the Jongest. cally in two sharp points widely separated by a Abdominal surface and lateral margins with median U-shaped c1eft; with a basidorsal, conic, a 11 b 12 a Figs. 11-12. Details of morphology of the larvaof Oplonaeschna magna. 11) Female gonapophyses. A) Leftlateral view; B) Ventral view. 12) Tenth abdominal segment and caudal appendages. A) Male; B) Female. GONZALEZ & NOVELO: Oplonaeschna magna sp. nov. (Odonata:Aeshnidae) 713 round-tipped tubercles almost as long as cercus, Measurements (in mm): Last instar larva (Q): occupying basal 0.50 the length of epiproct; lat Total length (including appendages) 43; abdomen eral margins roughly serrulate ventrally. 28; maximum width of head 9.5; hind femur 8.0. Paraprocts pyramidal, sharp-edged; the supero Lateral spines on abdomen: on 5, 0.2; on 6, 0.7; and ventrointernal edges roughly serrulate; their on 7, 0.8; on 8, 0.8; on 9, 0.6. Cerci 1.6; epiproct tips moderately incurved, ending in a strong, 3.5; paraprocts4.9. Exuviae (a a): Total length acutely-pointed spine; a tuft of long, stout setae 45-49; abdomen 29.5-33; maximum width of present on ventrobasal part of spine. Relative head 9.5-10.3; hind femur 7.8-8.2; lateral spines length of male caudal appendages: cerci 0.46, on abdominal segment :5 0.2-0.4; on 6 0.7-0.9; on epiproct 0.74, paraprocts 1.0. Female (Fig. 70.9-1.1; on 8 0.9-1.1; on 9 0.7-0.9. Cerci 1.9- 12b): Cercus digitiforrn, gradually narrowed at 2.5; epiproct 3.5-4.1; paraprocts 4.7-5.3. (Q Q): apex, their tips are acutely-pointed and conver Total length 46-51; abdomen 31-33; max. width gent; with spiniforrn setae on lateral margins. of head 10-10.5; hind femora 7.8-8.7; lateral Epiproct as in maJe but lacking basidorsal spines on abdominal segment 5: 0.2-0.4; on 60.8- tubercle. Paraprocts as in male. Proportions: 0.9; on 7 1.0-1.1; on 8 1.0-1.1; on 9 0.6-0.9. Cerci cerci 0.36, epiproct 0.73, paraprocts 1.0. 1.8-2.1; epiproct3.6-4.3; paraprocts 5.0-6.0. a 13 \ \ I .. ,�. I " \�. , 1 15 Figs. 13-15. Details of morphology of the larvaof Oplonaeschna armata. 13) Prementum. A) Dorsal view; B) Right palpus, ventral view. 14) Ligula, dorsal view. 15) Tenth abdominal segment and caudal appendages of female. 714 REVISTADE BIOLOGIA TROPICAL Oplonaeschna armata (Hagen) streams of subtropical areas at lower elevations Larva (900 m in Morelos state). Oplonaeschna magna (Figs. 13-15) also inhabits rocky canyon streams and at least one locality (E! Chico, Hidalgo State) is located Material examined: 3 exuviae (QQ), 1 aboye 2000 m of altitude. last instar larva (Q). MEXICO: MORELOS; At Tepoztlán, Morelos, most adults were col TeteIa del Volcán, 11/Aug.l1984, (R. Novelo) (3 lected in November. Males were captured while Q Q). MEXICO, HIDALGO; Tuzanapa, patrolling back and forth in a small stream. They 29/July/1986, (R. Novelo) (1 Q). Deposited at showed pursuit flights toward each other, how Colección de Insectos Acuáticos, Instituto de ever no territorial defence was noted. We saw Ecología (IEXA), Xalapa, Veracruz, México. one succesful copulation attempt. A maJe cap Redescription: As in Oplonaeschna magna tured a female in flight aboye the stream and the except for following differences: Labium: ensuing wheeJ position was formed. Copulatíon Prementum-postmentum articulatíon reaching lasted for more than one hour until the pair anterior margin of mesocoxae, litde longer than moved away from the area of observation. wide (Fig. 13a). Superior and inferior angles of Males and females were also collected while apical lobe of palpus rounded (Fig. 13b). Lígula feeding in groups aboye the middle of a road. and median cIeft as in Fig 14. Caudal The "hawk-like" behavior was similar to other appendages of female (Fig. 15): Epiproct with aeshnids (e.g., Coryphaeschna, Remartinia, and or without a dorsal spine at basal 0.3; apical Aeshna) we have observed. cleft V-shaped. Paraprocts more incurved than At Tepoztlán, all adults collected in in O. magna. Relative length of caudal November were young (judging by the brilliance appendages: 0.40-0.49; 0.80-0.95; 1.0 (cerci, of their wings), suggesting the possibility that epiproct and paraprocts respectively). adults emerge synchronously in this area. Other Measurements (in mm): Last instarlarva (Q): common odonates found were Archilestes gran Total length (including appendages) 39; abdomen dis, Argia plana, Libellula saturata, Paltothemís 25.5; maximum width of head 9.0; rund femur lineatipes and Sympetrum illotum. At two locali 7.2. Lateral spines on abdomen: on 5, 0.3; on 6, ties (Metepec and El Chico) we colIected both O. 0.7; on 7, 0.9; on 8, 0.9; on 9, 0.7. Cerci 1.9; magna and O. armata flying together. epiproct 3.8; paraprocts 4.0. Exuviae (Q): Total The single 1ast instar larva collected in length 37.5-39; abdomen 24-26; maximum width Tepoztlán was found in a residual pool among 01' head 8.0-8.5; rund femur 6.3-6.4. Lateral rocks and decomposed twigs and leaves; another spines on abdomen: on 5, 0.4-0.5; on 6, 0.6-0.9; larva was observed wmle transforming into an on 7, 0.7-1.0; on 8, 0.7-1.0; on 9, 0.6-0.9. Cerci adult, climbing on a fallen tree trunk at 13:07 1.6-1.9; epiproct 3.2-3.3; paraprocts 3.9-4.0. hours. Exuviae were clinging 00 the vertical Ecology - Larvae 01'O. armata were record rocky walls 01' the canyon, attached to moss at ed by Needham & Westfall (1955) líving in 0.80 to 1.25 m aboye water, and on tree trunks residual pools of rocky canyon streams that are and shrubs even at 3 m height. This emergence subject to flash floods. Johnson (1968) also behavíor contrasts strongly to that recorded by found larvae in similarhabitats in New Mexico Johnson (1968) for O. armata, in wmch the emer and Arizona. Headwaters 01' major creeks and gence rarely took place more than 60 cm aboye small, permanent, spring-fed rocky streams of water, and never on tree trunks or fallen limbs. arid southwestern mountains appear to be the only known habitats for this species in the USA (Johnson 1968). In Mexico, we found O. arma DISCUSSION ta inhabiting mountain streams in temperate zones (more than 2000 m in MoreIos and In rus discussion on O. armata, Calvert (1905) Durango states), but it was also found in calledatt ention to fueapparent geograpruc variation GONZALEZ & NOVELO: Oplonaeschna maglla sp. nov. (Odonata:Aeshnidae) 715 variatíon within individuals collected between ACKNOWLEDGEMENTS Arizona (USA) and Cuernavaca (Mexico). He noted that one individual, detennined by R. We thank D. R. Paulson and R. W. Garrison McLachlan, had the stripes of the thorax unusu for their comments and critical review of the ally wide. Although we did not study this spec manuscript. We also thank Guillennina Ortega imen (which is apparently deposited in the León for producing the drawings of adult NMNH Washington), we believe, judging by structures. Calvert's description, that it probably represents O. magna. Adults of O. magna are easily separated RESUMEN· from those of o. armata by their greater size and much broader paJe thoracic stripes ( see Se describe el adulto y la náyade de Oplonaeschlla Fig. 16). The size and color differencesbetween maglla (Odonata: Aeshnidae), una nueva especie recolecta-· da en los estados de Estado de México, Guerrero, Hidalgo, the two species are manifested by the following y Morelos, México. Los adultos de O. magna pueden ser character comparison (those of o. armata in reconocidos fácilmente de los de o. armara por su mayor parentheses): mesepimeral stripes: 2.17 mm on tamaño y desarrollo de las bandas pálidas del tórax. Las average (0.94 mm), metepimeral stripes 2.69 náyades de la nueva especie se distinguen también con mm (0.83 mm), spines of anterior laminae 1.96 facilidad de las de O. armata por el mayor tamañoy longi tud del prementón y por otras diferencias en la morfología mm (0.80 mm). de los lóbulos palpales y del epiprocto. Se proporcionan notas sobre la biología de la nueva especie. REFERENCES Corbet, P. S. 1953. A terminology for the ¡abium of larval Odonata.Entomologist 86:191-196. Calvert, P. P. 1905. Biología Centrali Americana. Porter & Dulau, London. Calvert, P. P. 1956. The neotropical species of the "sub genus Aeshna" sensu Selysíi 1883 (Odonata). Mem. Fig. 16. Coloration pattero of maJe; A) Lateral view of male Amer. ent. Soco 15: V+ 251 pp., 47 pIs excl. pterothorax in O. maglla. B) same in O. armata. Hagen, H. 1861. Synopsis of the Neuroptera of North America. Smithsonian Misc. ColI., Washington. 347 p. The larvae of O. magna is distinguishable Johnson, C. 1968. Seasonal ecology of the dragonfly Oplollaeschna armata Hagen (Odonata: Aeshnidae). from o. armata by their Oyeran greater size and Amer. Midl. Nat. 80:449-457. by the following structural differences: premen tum-postmentum articulation reaching hind Needham, J. G. & M. J. Westfall Jr. 1955. A Manual of ¡he margin of mesocoxae, prementum enlarged dragonflies of North America (Anisoptera). University basally, inferior angle of apical lobe of palpus of California, Berke!ey. 615 p. with a small tooth, paraprocts less incurved, Selys, E. 1883. Synopsis des Aeschnines. lre partie. epiproct notably shorter with respect to para Classification. Bull. Acad. f. Belg. 3:712-748. procts and with apical cleft U-shaped, and length of spine on abdominal segment 5 is Walker, E. M. 1912. The North American dragonflies of the longer than in O. magna. genus Aeshnu. Univ. Toronto Stud.(Biol.)1l:1-213, pIs 1-28 excl.