Corydalus muzoensis Ardila-Camacho

Ardila-Camacho, Adrian, 2014, A new species of Corydalus Latreille, 1802 (Megaloptera, Corydalidae) and first record of C. clavijoi Contreras-Ramos, 2002 and C. nubilus Erichson, 1848 from Colombia, Zootaxa 3811 (1), pp. 107-118 : 112-115

Corydalus muzoensis Ardila-Camacho sp. n.

( Figs. 4 , 5 )

Diagnosis. Distinguished by having the head, antennae and thorax dark reddish brown; male genitalia with ninth gonostyli unguiform, with a conspicuous apical claw. Ninth sternite with a large and acuminate posteromedian projection that extends near to midlength of the tenth gonostyli. Posterolateral lobes well developed, acuminate with the apices slightly directed mesally. Tenth gonostyli strongly sclerotized, digitiform with acute apex, and extremely long.

Description. Mandible length: 8 mm; antennae length: 30 mm; head width: 7 mm; forewing length: 45 mm; hindwing length: 40 mm; headlength (longitudinal): 12 mm; prothorax length: 5 mm; pterothorax length: 5 mm.

Head. Dark reddish brown, antenna filiform without denticulations, with 56 segments including the scape and pedicel, all dark reddish brown and covered with small black setae. Male mandibles elongate with dentition not entirely reduced consisting in three preapical teeth, the third separated from the first two ( Fig. 4 e). Clypeal margin with prominent lateral projections, medial projection attenuate, slightly incised ( Fig. 5 b). Maxilla and labium dark brown. Eyes dark brown, postocular spine attenuate ( Fig. 4 e).

Thorax. Pronotum dark reddish brown, slightly patterned, posterior region with conspicuous mesal sulcus ( Fig. 4 e). Meso- and metathorax brown, densely covered with fine setae. Meso- and metaescutum with two lateral dark brown spots.

Wings. Forewing with costal field wide, brown infuscated; 19-20 costal crossveins dark brown. Two conspicuous pale pterostigmal-like areas ( Fig. 4 a). Subcostal field brown with a basal crossvein. Radial field brown, except for some small pale circular white spots, with two or three of these in the cell R2. Rs with six forks and 14 crossveins; seven or eight longitudinal veins arriving to the posterior wing margin. Four crossveins between MP and CuA, the second crossvein and the MP fork with dark brown spots. Vein MP1+2 with a single fork, MP3+4 without forks. CuA with four forks. Stem of CuP dark brown pigmented. Hindwing membrane pale, semitranslucent, except some radial crossveins. Costal field composed of 12 or 13 crossveins; pterostigmal-like areas pale, scarcely perceptible. Rs with seven forks and 13 crossveins; eight veins arriving posterior wing margin. Four crossveins between MP and CuA; CuA with five forks ( Fig. 4 a).

Legs. Mostly brown, densely covered with fine ochreous setae. Apex of femur and base of tibia dark brown; tarsal claws dark brown, short, as long as second tarsomere.

Abdomen. Predominantly brown, covered with small setae of the same color as cuticle.

Male genitalia. Ninth tergum subquadrate, V-shaped internal inflection reaching less than midlength of tergum. Anal tubercle partially covered by the eleventh tergum ( Fig. 4 c). Ectoproct elongate, apex rounded, thumblike, subequal in width to base, densely covered with golden setae ( Figs. 4 c, d). Ninth sternite moderately convex, with large and acuminate posteromedian projection extending to near of midlength of the tenth gonostyli ( Figs. 4 b). Posterolateral lobes well developed, apices slightly directed mesally, densely covered with ochreous setae ( Fig. 4 b). Pregenital sacs inconspicuous, apparently absent. Sack between the ninth sternite and tenth gonocoxite well developed, conspicuous, with dorsal crests. Ninth gonostyli unguiform, slightly widened at base in lateral view, short, with a conspicuous apical claw, posterodorsally directed, apex abruptly directed mesally ( Figs. 4 b, c, d). Posterior edge of tenth gonocoxite rounded and well sclerotized. Tenth gonostyli very long, distinctly curved ventrad, digitiform with acute apex, strongly sclerotized, covered with small brown setae ( Fig. 4 f); tenth gonocoxite elongate, slightly longer than the tenth gonostyli ( Fig. 5 b).

Geographical distribution. Colombia.

Adult flight period. The specimen was collected during July.

Bionomic data. The specimen was attracted to yellow light near a tributary stream of the Minero River.

Etymology. Named for its place of collection, the Muzo Municipality in the western province of Boyacá (800 m), the ancient territory of the native Indian tribe “Muzos”.

Female. Unknown.

Type material. Holotype ♂: Colombia: Boyacá: Muzo, 845 m, 5°31’0’’N – 71°7’0’’W, 28-VII-2011, A. Páez, Corydalus muzoensis Ardila-Camacho (MUD-MEG001). Holotype condition: good, pinned, lacking right antenna, genitalia preserved in glycerol.

Figures

FIGURE 4. Corydalus muzoensis sp. n.: a, male habitus; b, male genitalia in ventral view; c, male genitalia in dorsal view; d, male genitalia in lateral view; e, head and pronotum in dorsal view; f, tenth gonocoxite in posteroventral view.

FIGURE 5. Corydalus muzoensis sp. n.: a, tenth gonocoxite; b, male clypeal margin (dorsal).