Phyllogomphoides enriquei Torres-Pachón & Novelo-Gutiérrez, 2017

Torres-Pachón, Mónica, Novelo-Gutiérrez, Rodolfo & Ruiz-Sanchez, Eduardo, 2019, A synopsis of Phyllogomphoides Belle, 1970 (Odonata: Gomphidae) of Mexico: taxonomy and distribution, Zootaxa 4634 (1), pp. 1-67 : 24-25

Phyllogomphoides enriquei Torres-Pachón & Novelo-Gutiérrez, 2017

Phyllogomphoides enriquei Torres-Pachón & Novelo-Gutiérrez, 2017: 595–600 [Zootaxa 4312 (3)] (♂)

Type. Holotype 1♂: México, Michoacán, Municipio Tepalcatepec, Río Pinolapa , 4 July 2005, R. Novelo et al. leg. ( IEXA) ; Paratypes 5♂♂: México, Municipio Tepalcatepec , Río Pinolapa, 15 August 2005 , R. Novelo et al. leg.; same locality but: 26 September 2005 ; same locality but: 7 November 2005 ( IEXA) .

Type repository. IEXA (Material examined).

Material studied: Total specimens: 8♂♂, distributed like thus: 8♂♂ ( IEXA). MEXICO: Michoacán; Aguililla (18º44’06.5’’N, 102º47’17.4’’W), elevation 1020m, 13 November 2005, R. Novelo et al. leg., 2♂♂ ; Municipio Tepalcatepec, Río Pinolapa (19º01’09.3’’N, 103º0’42.9’’W), elevation 616m, 4 July 2005, R. Novelo et al. leg., 1♂ (Holotype); same locality but: 15 August 2005, 2♂♂ ; same locality but: 26 September 2005, 2♂♂ ; same locality but: 7 November 2005, 1♂ (Paratypes) .

Description of male. Body dark brown, with five pale stripes on pterothorax. Head: Face mostly pale; labium pale, submentum light brown; labrum mostly pale with a wide blackish-brown band on anterior border, posterior border brown, with a small, brown U-shaped median spot; mandibles pale basally, tips reddish-brown to black; anteclypeus and postclypeus brown inferiorly, creamy pale superiorly; lower surface of antefrons brown, upper of antefrons and postfrons mostly pale, a blackish-brown stripe at the union with vertex; antennal scape dark brown with apical rim creamy pale, pedicel dark brown, flagellum brown; vertex dark brown, depressed area between ocelli with a large, quadrate pale spot, ocelli yellow; occiput dark brown with a large, trapezoid, central pale spot, posterior border fringed with long, stiff, reddish-brown setae ( Fig. 22 ).

Thorax: Pronotum reddish-brown, with a pale middorsal twin-spot on posterior margin of middle and posterior lobes. Pterothorax reddish-brown, with five pale stripes as shown in Fig. 22 ; middorsal thoracic carina pale; first antehumeral stripe connected to pale mesothoracic collar forming an inverted “7” reaching border of antealar crest superiorly; second antehumeral stripe the narrowest, divided in a stripe that covers inferior 0.60–0.70 of mesepisternum’s length, ending in the upper end in a circular spot close to antealar crest; mesepimeral stripe more wider than second antehumeral stripe, covering most of mesepimeron (90–95%), more or less parallel sided, gradually widening at upper; metepisternal stripe covering the full-length of metepisternum, almost encircling the spiracle, and forming a circular spot superiorly; metepimeral stripe forming and inverted “L” reaching subalar carina; metaposternum pale; pectus mostly grayish-yellow, with a large, distal, quadrate brown spot. Legs: Femora mostly light brown, distally dark reddish-brown, anterior femora broadly pale ventrally; tibiae reddish-black, armature black; tarsi and pretarsal claws reddish-black;. Wings: Hyaline, tinged with brown at extreme base, venation black, anterior margin of costae with a continuous well-defined yellow line in all the wings; second primary antenodal crossveins the 7th (left), the 8th (right) in FW, the 6th in HW; antenodal crossveins FW 19–22, HW 13–16; postnodal crossveins FW 12–14, HW 12–14; second serie antenodal crossveins in FW 21–23 and HW 17–19; triangles 3-celled; subtriangles 3-celled in FW, 2-celled in right HW, 3-celled in left HW; supratriangles 3-celled; anal loop 3-celled (left), 4-celled (right); anal triangle 4-celled; pterostigma dark brown with brace vein, surmounting six cells (left), five cells (right) in FW, six cells in HW.

Abdomen: Dark color on S1–2 reddish-brown, black on S3–7, S8–9 black on dorsum, light brown at sides, S10 light brown. Pale coloration creamy yellow as follows: a middorsal stripe and the ventral 0.5 of tergum on S1; a middorsal stripe, auricles, and a posteroventral, narrow, vertical spot on S2; a middorsal stripe on basal 0.80 constricted at basal 0.85 of its length, and a broad basoventral spot on basal 0.40 of S3; a middorsal stripe on basal 0.80 tapering posteriorly, a slightly broad basoventral spot on basal 0.25 of S4; a middorsal stripe on basal 0.25 tapering posteriorly, a slightly broad basoventral spot on basal 0.25 of S5; a middorsal spot on basal 0.10, a slightly broad basoventral spot on basal 0.20 of S6; basal half of S7; S8 with pale strikes on basoventral 0.10. Foliation on S8–9 moderately developed and scalloped, foliation on S8 increasing gradually in width caudally, ending in a wide round- ed lobe which surpasses slightly the anterior margin of S9 (0.50 mm), the edge of this foliation with a row of small spines on apical 0.30 of its length, maximum width of foliation 0.53–0.55 mm; foliation on S9 of the same width along the entire margin, 0.35–0.45 mm wide, inferior margin smooth ( Fig. 35 ). Accessory genitalia: Anterior lamina thick, entire, anterior margin undulate; in ventral view anterior hamuli tumid basally, almost twice as wide at base than the entire, rounded apex, mesal margin widely and deeply notched at basal 0.60 (notch width 0.08–1.2 mm) the basal margin of the notch ending in a strong spine directed posteriorly, distal margin of notch with two small denticles; external surface moderately excavated inferiorly; posterior hamule subcylindrical, with a large, sharply pointed apical spine directed mesally, with abundant long and short whitish hairs ( Figs. 53–54 ). Vesica spermalis : V1 bifid with a small tooth on middle, V2–3 of usual type, V4 with 2 relatively short flagella not reaching posterior margin of V1. Caudal appendages: Cerci, with abundant long setae, dorsally pale on apical 0.70–0.80 its length, basal 0.20–0.30 of ventral surface, and apices mostly black, a dorsomesal tooth with acute tip, 0.46 mm length at basal 0.70 directed medially, in lateral view tip of cercus produced dorsally in a large, wide spine, ventrally produced into an acuminate spine, 0.25 mm long; in ventrolateral view with a short, subbasal spine 0.13 mm length, at basal 0.20. Epiproct brown with few, short, whitish hairs; in dorsal view V-shaped, tips sharps, separated from each other by a distance of 0.68–0.75 mm; in lateral view, branches strongly up-curved ( Figs. 84–86 ).

Measurements (average in parenthesis): TL, 59.5–61.4 (60.56); AL, 43–44 (43.43); MWh, 8.0–8.1 (8.06); FwL, 36–38 (36.83); HwL, 34–36.5 (35.16); FwW, 8.0–8.5 (8.33); HwW, 10–10.5 (10.16); HfL, 6.1–6.2 (6.13); cerci length, 3.0–3.4 (3.23).

Female. Unknown.

Comparative diagnostic notes. This species closely resembles P. luisi . Both species are medium size. Males can be differentiated by the following (features of the later in parentheses): notch on anterior hamulus deeper than wide, its inferior edge ending in a strong spine directed posteriorly, superior edge sometimes with two small denticles (notch on anterior hamulus wider than deep, its inferior edge not terminating in a strong spine). The female of P. enriquei is not know. On other hand, the geographic distribution pattern of P. enriquei and P. luisi is very similar, it is towards the center of Pacific coast. Similarily, P. enriquei can be separated from other species by the mesal margin of anterior hamulus notched (mesal margin and apex entire [ P. suasus ], mesal margin of anterior hamulus broadly emarginate on distal half [ P. pacificus and P. indicatrix ]; from P. apiculatus and P. danieli by the anterior hamule with tooth or hook on mesal margin (anterior hamule lacking any kind of tooth or hook on mesal margin), and from the remaining species by the anterior hamulus with mesal margin notched and apex entire and rounded (anterior hamulus with mesal margin entire, with the apex cleft forming two subequal branches).

Flight season. July, August, September, October (No record, but this is supposed because it is the period of low precipitation range), and November.

Distribution. Michoacán ( Fig. 146 ). Only in Mexico.

Natural history. The type locality is a rocky stream surrounded by dry tropical deciduous forest. The water channel generally runs into a wide canyon, riffles and rapids were common, as well as large pools ( Novelo-Gutiérrez & Gómez-Anaya 2009). According to the records, this species has an altitudinal distribution in Mexico from 616 to 1020masl.

Figures

FIGURES 17–22. Head and thorax, lateral view. 17) P. albrighti, male; 18) P. apiculatus, male; 19) P. bifasciatus, female; 20) P. danieli, male; 21) P. duodentatus, male; 22) P. enriquei, male.

FIGURES 30–36. Abdominal segments S8–10 and caudal appendages, left lateral view. 30) P. albrighti, male; 31) P. apiculatus, male; 32) P. bifasciatus, male; 33) P. danieli, male; 34) P. duodentatus, male; 35) P. enriquei, male; 36) P. indicatrix, male (alcoholic teneral specimen).

FIGURES 53–62. Male accessory genitalia, ventral and ventrolateral view. 53–54) P. enriquei; 55–56) P. indicatrix (alcoholic teneral specimen); 57–58) P. luisi; 59–60) P. nayaritensis; 61–62) P. pacificus.

FIGURES 84–95. Male caudal appendages, dorsal, lateral and ventral view. 84–86) P. enriquei; 87–89) P. indicatrix (teneral preserved in alcohol); 90–92) P. luisi; 93–95) P. nayaritensis.

FIGURES 145–146. Maps of geographical distribution. 145) P. duodentatus; 146) P. enriquei.