Acronyctodes asignum Matson, 2025

Acronyctodes asignum Matson

Figures 1 View FIGURE 1 , 5 View FIGURES 2–9 , 16 View FIGURES 16–20 , 21 View FIGURES 21–24 , 26 View FIGURES 25–32 , 34 View FIGURES 33–36 .

https://zoobank.org/NomenclaturalActs/63779c9a-f7f0-416e-a29a-eeacf114b07b

Diagnosis. Acronyctodes asignum cannot be reliably distinguished from A. cautama , A. colorata , and A. corrugata based on external appearance. Confidence in identification typically requires genitalic dissection and/or DNA barcoding. Our limited sampling suggests that A. asignum primarily inhabits the Guanacaste and Central Cordilleras of Costa Rica, while A. colorata is found in the Talamanca Cordillera of Costa Rica and Panama, and A. corrugata ranges more widely across the Central American montane and pine-oak forests of southern Mexico, Guatemala, El Salvador, Honduras, and possibly Nicaragua. Acronyctodes cautama is thus far only known from Mexico, west of the Isthmus of Tehuantepec.

The female genitalia of A. asignum are immediately diagnostic among the known members of the Cautama-group, as it is the only member lacking a signum on the corpus bursae ( Fig. 21 View FIGURES 21–24 ). In contrast, the male genitalia are less distinctive and often exhibit transitional characteristics towards other members of the Cautama-group, necessitating caution when using them as definitive identifiers. However, there appears to be notable differences in the arrangement and number of cornuti among the species. Acronyctodes asignum typically has 12–15 cornuti arranged in a mostly linear fashion on the vesica ( Fig. 16b View FIGURES 16–20 ). In comparison, A. colorata usually has 30–35 cornuti in a dense non-linear cluster ( Fig. 19b View FIGURES 16–20 ), A. corrugata has 10–15 cornuti in a mostly linear cluster ( Fig. 17b View FIGURES 16–20 ), A. cautama has 7–10 in a linear cluster ( Fig. 18b View FIGURES 16–20 ), and A. bisbili has approximately 25–30 cornuti in a non-linear cluster ( Fig. 20b View FIGURES 16–20 ). Additionally, the apex of the valve in A. asignum , A. corrugata , and A. cautama is slightly angulated, whereas in A. bisbili and A. colorata , it appears entirely rounded ( Figs. 16a–20a View FIGURES 16–20 ).

Adult. ( Figure 5 View FIGURES 2–9 ). Forewing length: male: 18–22 mm; female: 23–26 mm.

Head: Antenna bipectinate in both sexes; rami of male about 3x longer than those of female; scales above ochreous with scattered black scales. Frons and vertex ochreous gray. Labial palpus 1.5x diameter of eye, ochreous gray. Haustellum well-developed.

Thorax: Tan to ochreous gray. Legs tan to ochreous gray, mottled with dark gray to black patches. Males with small hair pencil tucked inside groove on inner surface of hind tibia. Epiphysis well-developed. Tibial spur formula 0-2-4. Forewing grayish tan, variable amounts of brown and olive green; smooth antemedial line, modestly dentate postmedial line. Medial area between antemedial and postmedial lines slightly browner. Black discal spot present and post-discal area near discal spot with blackened patch. Subtle, diffused darkened medial line sometimes present near postmedial line. Hindwing grayish-tan with transverse medial black dentate line and black discal spot; discal spot may have additional subtle transverse line through it. Underside of both wings like upperside but with pattern elements more spotty and color highly variable. Fringe sometimes with light checkering.

Abdomen: Pale gray to tan.

Male genitalia: ( Figure 16 View FIGURES 16–20 ). Uncus triangulate and campanulated, ending in hood-like apex. Medial posterior projection of gnathos papillated. Valve broad with costal sclerite ending in subapical acuminate process. Juxta plate-like with large posterior digitate process. Vesica with ca. 12–15 spinose cornuti in tight, mostly linear, cluster.

Female genitalia: ( Figure 21 View FIGURES 21–24 ). Posterior apophysis ca. one half length of anterior apophysis.

Ductus bursae with anterior sclerite. Corpus bursae ovate and entirely membraneous; signum absent.

Larva: ( Figure 26 View FIGURES 25–32 ). Head black with white suture separating frons and lobes; clypeus white. Body predominantly jet black, with mottled orange markings throughout thorax and A1, and at posterior end from A6 onward. Broken middorsal and subdorsal white pinstripes extend primarily across A1–A5, transitioning to yellow toward front and rear of body. Spiracles black; spiracular area with large, ill-defined white and yellow streaked patches, interspersed with scattered black spots, particularly over A2–A5. Prolegs yellow and black.

Phenotype somewhat resembling A. cautama , but that species typically features a broad, mostly continuous white spiracular band across the mid-body. Additionally, the thorax and posterior body of A. cautama are less mottled with black and yellow and instead exhibit crisper, more defined black patches over the yellow areas.

Holotype. ♂, COSTA RICA: Guanacaste, ACG , Santa Maria, Crater Bosque Sendero Adentro , (10.80348°, -85.32729°), el. 1594m, 07-IV-2016, coll. Sergio Rios, Genitalia slide: TAM-2023-329, 16-SRNP-101701, USNMENT01947536, [ USNM]. GoogleMaps

Paratypes (39♂, 24♀). ♂, COSTA RICA: Guanacaste, ACG , Santa Maria, Manta Claro , (10.80345°, - 85.32621°), el. 1610m, 03-III-2011, coll. F. Quesada and H. Cambronero, 11-SRNP-101352, USNMENT01947497 GoogleMaps ; ♂, COSTA RICA: Guanacaste, ACG , Santa Maria, Crater Bosque Sendero Adentro , (10.80348°, -85.32729°), el. 1594m, 15-VI-2018, coll. S. Rios and H. Ramirez, 18-SRNP-104265, USNMENT01947498 GoogleMaps ; ♂, COSTA RICA: Guanacaste, ACG , Santa Maria, Manta Claro , (10.80345°, -85.32621°), el. 1610m, 02-II-2011, coll. S. Rios and R. Franco, 11-SRNP-100639, USNMENT01947499 GoogleMaps ; ♂, COSTA RICA: Guanacaste, ACG , Santa Maria, Manta Claro , (10.80345°, -85.32621°), el. 1610m, 02-II-2011, coll. S.Rios and R.Franco,11-SRNP-100638,USNMENT01947500 GoogleMaps ; ♂, COSTA RICA: Guanacaste, ACG , Santa Maria, Crater Bosque Sendero Adentro , (10.80348°, -85.32729°), el. 1594m, 06-IV-2016, coll. Sergio Rios, 16-SRNP-101407, USNMENT01947501 GoogleMaps ; ♂, COSTA RICA: Guanacaste, ACG , Santa Maria, Crater Bosque Sendero Adentro , (10.80348°, -85.32729°), el. 1594m, 06-IV-2016, coll. Sergio Rios, 16-SRNP-101408, USNMENT01947502 GoogleMaps ; ♂, COSTA RICA: Guanacaste, ACG , Santa Maria, Crater Bosque Sendero Adentro , (10.80348°, -85.32729°), el. 1594m, 15-VI-2018, S. Rios and H. Ramirez, 18-SRNP-104264, USNMENT01947503 GoogleMaps ; ♀, COSTA RICA: Guanacaste, ACG , Cacao, Derrumbe , (10.93110°, -85.46194°), el. 1310m, 11-VII-2010, coll. R. Franco and F. Quesada, 10-SRNP-110975, USNMENT01947504 GoogleMaps ; ♀, COSTA RICA: Guanacaste, ACG , Cacao, Sendero Cima, (10.93328°, -85.45729°), el. 1460m, On Schlegelia parviflora , 25-VI-2018, ecl. 02-VIII-2018, coll. Dunia Garcia, 18-SRNP-35309, USNMENT01947505 GoogleMaps ; ♀, COSTA RICA: Guanacaste, ACG , Cacao, Sendero Cima, (10.93328°, -85.45729°), el. 1460m, On Schlegelia parviflora , 25-VI-2018, ecl. 17- VIII-2018, coll. Dunia Garcia, 18-SRNP-35310, USNMENT01947506, [missing abdomen] GoogleMaps ; ♂, COSTA RICA: Guanacaste, ACG , Santa Maria, Crater Bosque Sendero Adentro , (10.80348°, -85.32729°), el. 1594m, 01-IV-2017, coll. S. Rios, 17-SRNP-102033, USNMENT01947507 GoogleMaps ; ♂, COSTA RICA: Guanacaste, ACG , Santa Maria, Crater Bosque Sendero Adentro , (10.80348°, -85.32729°), el. 1594m, 17-XI-2017, coll. S. Rios and H. Ramirez, 17-SRNP-106962, USNMENT01947508 GoogleMaps ; ♂, COSTA RICA: Guanacaste, ACG , Santa Maria, Crater Bosque Sendero Adentro , (10.80348°, -85.32729°), el. 1594m, 01-IV-2017, coll. S. Rios, 17-SRNP-102028, USNMENT01947509 GoogleMaps ; ♂, COSTA RICA: Guanacaste, ACG , Santa Maria, Crater Bosque Sendero Adentro , (10.80348°, -85.32729°), el. 1594m, 01- IV-2017, coll. S. Rios, 17-SRNP-102029, USNMENT01947510 GoogleMaps ; ♀, COSTA RICA: Guanacaste, ACG , Cacao, Sendero Cima, (10.93328°, -85.45729°), el. 1460m, On Schlegelia parviflora , 27-V-2009, ecl. 06-VIII-2009, coll. Harry Ramirez, 09-SRNP-35911, USNMENT01947511 GoogleMaps ; ♂, COSTA RICA: Guanacaste, ACG , Cacao, Sendero Cima, (10.93328°, -85.45729°), el. 1460m, On Schlegelia parviflora , 08-IX-2010, ecl. 26-X-2010, coll. Manuel Pereira, 10-SRNP-36350, USNMENT01947512 GoogleMaps ; ♂, COSTA RICA: Guanacaste, ACG , Santa Maria, Crater Bosque Sendero Adentro , (10.80348°, -85.32729°), el. 1594m, 01-IV-2017, coll. S. Rios, 17-SRNP-102026, USNMENT01947513 GoogleMaps ; ♂, COSTA RICA: Guanacaste, ACG , Santa Maria, Crater Bosque Sendero Adentro , (10.80348°, -85.32729°), el. 1594m, 01-IV-2017, coll. S. Rios, 17-SRNP-102027, USNMENT01947514 GoogleMaps ; ♀, COSTA RICA: Guanacaste, ACG , Santa Maria, Crater Bosque Sendero Adentro , (10.80348°, -85.32729°), el. 1594m, 23- VII-2017, coll. S. Rios, 17-SRNP-105361, USNMENT01947515 GoogleMaps ; ♂, COSTA RICA: Guanacaste, ACG, Santa Maria, Crater Bosque Sendero Adentro , (10.80348°, -85.32729°), el. 1594m, 01-IV-2017, coll. S. Rios, 17-SRNP-102025, USNMENT01947516 GoogleMaps ; ♀, COSTA RICA: Guanacaste, ACG , Cacao, Sendero Cima, (10.93328°, - 85.45729°), el. 1460m, On Schlegelia parviflora , 12-IX-2018, ecl. 03-XI-2018, coll. Harry Ramirez, 18-SRNP-35513, USNMENT01947517 GoogleMaps ; ♀, COSTA RICA: Guanacaste, ACG , Cacao, Sendero Cima, (10.93328°, -85.45729°), el. 1460m, On Schlegelia parviflora , 12-IX-2018, ecl. 13-XI-2018, coll. Harry Ramirez, 18-SRNP-35525, USNMENT01947518 GoogleMaps ; ♂, COSTA RICA: Guanacaste, ACG , Santa Maria, Crater Bosque Sendero Adentro , (10.80348°, -85.32729°), el. 1594m, 28-IV-2017, coll. S. Rios, 17-SRNP-102774, USNMENT01947519 GoogleMaps ; ♀, COSTA RICA: Guanacaste, ACG , Santa Maria, Crater Bosque Sendero Adentro , (10.80348°, -85.32729°), el. 1594m, 22- VII-2017, coll. S. Rios, 17-SRNP-105083, USNMENT01947520 GoogleMaps ; ♂, COSTA RICA: Guanacaste, ACG , Santa Maria, Crater Bosque Sendero Adentro , (10.80348°, -85.32729°), el. 1594m, 31-III-2017, coll. S. Rios, 17-SRNP-101872, USNMENT01947521 GoogleMaps ; ♂, COSTA RICA: Guanacaste, ACG , Santa Maria, Crater Bosque Sendero Adentro , (10.80348°, -85.32729°), el. 1594m, 31-III-2017, coll. S. Rios, 17-SRNP-101873, USNMENT01947522 GoogleMaps ; ♀, COSTA RICA: Guanacaste, ACG , Santa Maria, Crater Bosque Sendero Adentro , (10.80348°, -85.32729°), el. 1594m, 07-II-2016, coll. R. Franco and H. Cambronero, 16-SRNP-100096, USNMENT01947523 GoogleMaps ; ♀, COSTA RICA: Guanacaste, ACG , Santa Maria, Crater Bosque Sendero Adentro , (10.80348°, -85.32729°), el. 1594m, 07-II-2016, R. Franco and H. Cambronero, 16-SRNP-100097 USNMENT01947524 GoogleMaps ; ♂, COSTA RICA: Guanacaste, ACG , Santa Maria, Crater Bosque Sendero Adentro , (10.80348°, -85.32729°), el. 1594m, 21-VII-2017, coll. S. Rios, 17-SRNP-104659, USNMENT01947525 GoogleMaps ; ♂, COSTA RICA: Guanacaste, ACG , Cacao, Sendero Cima, (10.93328°, -85.45729°), el. 1460m, On Schlegelia parviflora , 12-IX-2018, ecl. 03-XI-2018, coll. Harry Ramirez, 18-SRNP-35515, USNMENT01947526 GoogleMaps ; ♂, COSTA RICA: Guanacaste, ACG , Santa Maria, Crater Bosque Sendero Adentro , (10.80348°, -85.32729°), el. 1594m, 21-VII-2017, coll. S. Rios, 17-SRNP-104657, USNMENT01947527 GoogleMaps ; ♂, COSTA RICA: Guanacaste, ACG , Santa Maria, Crater Bosque Sendero Adentro , (10.80348°, -85.32729°), el. 1594m, 21-VII-2017, coll. S.Rios, 17-SRNP-104658, USNMENT01947528 GoogleMaps ; ♂, COSTA RICA: Guanacaste, ACG , Santa Maria, Crater Bosque Sendero Adentro , (10.80348°, -85.32729°), el. 1594m, 16-IV-2018, coll. S. Rios, 18- SRNP-102007, USNMENT01947529 GoogleMaps ; ♂, COSTA RICA: Guanacaste, ACG , Santa Maria, Crater Bosque Sendero Adentro , (10.80348°, -85.32729°), el. 1594m, 07-II-2016, coll. R. Franco and H. Cambronero, 16-SRNP-100095, USNMENT01947530 GoogleMaps ; ♂, COSTA RICA: Guanacaste, ACG , Santa Maria, Crater Bosque Sendero Adentro , (10.80348°, -85.32729°), el. 1594m, 01-IV-2017, coll. S. Rios, 17-SRNP-102024, USNMENT01947531 GoogleMaps ; ♂, COSTA RICA: Guanacaste, ACG , Santa Maria, Crater Bosque Sendero Adentro , (10.80348°, -85.32729°), el. 1594m, 07- IV-2016, coll. Sergio Rios, 16-SRNP-101702, USNMENT01947533 GoogleMaps ; ♂, COSTA RICA: Guanacaste, ACG, Santa Maria, Crater Bosque Sendero Adentro , (10.80348°, -85.32729°), el. 1594m, 07-IV-2016, coll. Sergio Rios, 16- SRNP-101703, USNMENT01947534 GoogleMaps ; ♀, COSTA RICA: Guanacaste, ACG , Cacao, Sendero Cima, (10.93328°, - 85.45729°), el. 1460m, On Schlegelia parviflora , 17-VII-2008, ecl. 27-VIII-2008, coll. Harry Ramirez, 08-SRNP-36083, USNMENT01947537 GoogleMaps ; ♀, COSTA RICA: Guanacaste, ACG , Cacao, Sendero Cima, (10.93328°, -85.45729°), el. 1460m, On Schlegelia parviflora , 27-V-2009, ecl. 31-VII-2009, coll. Harry Ramirez, Genitalia slide: TAM-2023- 328, 09-SRNP-35908, USNMENT01947538 GoogleMaps ; ♀, COSTA RICA: Guanacaste, ACG , Cacao, Sendero Cima, (10.93328°, -85.45729°), el. 1460m, On Schlegelia parviflora , 08-IX-2008, ecl. 24-XI-2008, coll. Manuel Pereira, 08-SRNP-36802, USNMENT01947539 GoogleMaps ; ♂, COSTA RICA: Guanacaste, ACG, Cacao, Sendero Cima, (10.93328°, -85.45729°), el. 1460m, On Schlegelia parviflora , 08-IX-2008, ecl. 20-XI-2008, coll. Manuel Pereira, 08-SRNP-36798, USNMENT01947540 GoogleMaps ; ♂, COSTA RICA: Guanacaste, ACG, Santa Maria, Manta Sendero Perdido , (10.80639°,-85.32158°),el. 1762m, 03.III.2011, coll. S.Rios and R.Franco,11-SRNP-101286,USNMENT01947541 GoogleMaps ; ♂, COSTA RICA: Guanacaste, ACG , Cacao, Derrumbe , (10.93110°, -85.46194°), el. 1310m, 10-VII-2010, coll. S. Rios and H. Cambronero, Genitalia slide: TAM-2023-327, 10-SRNP-110548, USNMENT01947542 GoogleMaps ; ♀, COSTA RICA: Guanacaste, ACG , Cacao, Sendero Cima, (10.93328°, -85.45729°), el. 1460m, On Schlegelia parviflora , 19- X-1998, ecl. 11-XII-1998, coll. Mariano Pereira, 98-SRNP-15622, USNMENT01947543 GoogleMaps ; ♀, COSTA RICA: Guanacaste, ACG , Cacao, Sendero Cima, (10.93328°, -85.45729°), el. 1460m, On Schlegelia parviflora , 12-X-1998, ecl. 16-XI-1998, coll. Mariano Pereira,98-SRNP-15511,USNMENT01947544 GoogleMaps ; ♂, COSTA RICA: Guanacaste, ACG , Santa Maria, Manta Claro , (10.80345°, -85.32621°), el. 1610m, 02-II-2011, coll. S. Rios and R. Franco, 11- SRNP-100640, USNMENT01947545 GoogleMaps ; ♀, COSTA RICA: Guanacaste, ACG , Cacao, Sendero Cima, (10.93328°, - 85.45729°), el. 1460m, On Schlegelia parviflora , 27-V-2009, ecl. 12-VIII-2009, coll. Harry Ramirez, Genitalia slide: TAM-2023-330, 09-SRNP-35909, USNMENT01947546 GoogleMaps ; ♀, COSTA RICA: Guanacaste, ACG , Cacao, Sendero Cima, (10.93328°, -85.45729°), el. 1460m, On Schlegelia parviflora , 27-V-2009, ecl. 02-VIII-2009, coll. Harry Ramirez, 09-SRNP-35910, USNMENT01947547 GoogleMaps ; ♀, COSTA RICA: Guanacaste, ACG , Cacao, Sendero Cima, (10.93328°, -85.45729°), el. 1460m, On Schlegelia parviflora , 20-IX-1999, ecl. 09-XI-1999, coll. Mariano Pereira, 99-SRNP-1614, USNMENT01947548 GoogleMaps ; ♂, COSTA RICA: Guanacaste, ACG , Cacao, Sendero Cima, (10.93328°, -85.45729°), el. 1460m, On Schlegelia parviflora , 08-IX-2008, ecl. 08-XI-2008, coll. Manuel Pereira, 08-SRNP-36800, USNMENT01947549 GoogleMaps ; ♂, COSTA RICA: Guanacaste, ACG , Santa Maria, Manta Sendero Perdido , (10.80639°, -85.32158°), el. 1762m, 02-II-2011, H. Cambronero and F. Quesada, 11-SRNP-100558, USNMENT01947550 GoogleMaps ; ♂, COSTA RICA: Guanacaste, ACG , Santa Maria, Crater Bosque Sendero Adentro , (10.80348°, -85.32729°), el. 1594m, 08-II-2016, coll. H. Cambronero and S. Rios, 16-SRNP-100362, USNMENT01947551 GoogleMaps ; ♂, COSTA RICA: Guanacaste, ACG , Santa Maria, Crater Bosque Sendero Adentro , (10.80348°, -85.32729°), el. 1594m, 08-II-2016, coll. H. Cambronero and S. Rios, 16-SRNP-100361, USNMENT01947552 GoogleMaps ; ♀, COSTA RICA: Guanacaste, ACG , Cacao, Sendero Cima, (10.93328°, -85.45729°), el. 1460m, On Schlegelia parviflora , 21-X-1997, ecl. 02-XII-1997, coll. Roster Moraga, 97-SRNP-1910, USNMENT01947553 GoogleMaps ; ♀, COSTA RICA: Guanacaste, ACG , Cacao, Sendero Cima, (10.93328°, -85.45729°), el. 1460m, On Schlegelia parviflora , 21-X-1997, ecl. 22-XI-1997, coll. Roster Moraga, 97-SRNP-1911, USNMENT01947554 GoogleMaps ; ♂, COSTA RICA: Guanacaste, ACG , Cacao, Sendero Cima, (10.93328°, -85.45729°), el. 1460m, On Schlegelia parviflora , 12-X-1998, ecl. 22-XI-1998, coll. Mariano Pereira, 98-SRNP-15512, USNMENT01947555 GoogleMaps ; ♀, COSTA RICA: Guanacaste, ACG , Santa Maria, Crater Bosque Sendero Adentro , (10.80348°, -85.32729°), el. 1594m, 08-II-2016, coll. H. Cambronero and S. Rios, 16-SRNP-100363, USNMENT01947556 GoogleMaps ; ♀, COSTA RICA: Guanacaste, ACG , Cacao, Sendero Cima, (10.93328°, -85.45729°), el. 1460m, On Schlegelia parviflora , 25-VI-2018, ecl. 02-IX-2018, coll. Dunia Garcia, 18-SRNP-35311, USNMENT01947557 GoogleMaps ; ♀, COSTA RICA: Guanacaste, ACG , Cacao, Sendero Cima, (10.93328°, -85.45729°), el. 1460m, On Schlegelia parviflora , 12-IX-2018, ecl. 04-XI-2018, coll. Harry Ramirez, 18-SRNP-35518, USNMENT01947558 GoogleMaps ; ♀, COSTA RICA: Guanacaste, ACG , Cacao, Sendero Cima, (10.93328°, -85.45729°), el. 1460m, On Schlegelia parviflora , 12-IX-2018, ecl. 10-XII-2018, coll. Harry Ramirez, 18-SRNP-35517, USNMENT01947559 GoogleMaps ; ♂, COSTA RICA: Guanacaste, ACG , Cacao, Sendero Cima, (10.93328°, -85.45729°), el. 1460m, On Schlegelia parviflora , 22-IX-1998, ecl. 30-X-1998, coll. Harry Ramirez, 98-SRNP-3700, USNMENT01980000 GoogleMaps ; ♀, COSTA RICA: Guanacaste, ACG , Cacao, Sendero Cima, (10.93328°, -85.45729°), el. 1460m, On Schlegelia parviflora , 08-IX-2008, ecl. 29-XI-2008, coll. Manuel Pereira, 08-SRNP-36799, USNMENT01980001 GoogleMaps ; ♂, COSTA RICA: Alajuela, ACG , Rincon Rain Forest, Wege , (10.96864°, -85.32046°), el. 385m, 19-III-2018, coll. R. Franco and H. Cambronero, 18-SRNP-101406, USNMENT01980002 GoogleMaps ; ♂, COSTA RICA: Guanacaste, ACG , Cacao, Sendero Cima, (10.93328°, -85.45729°), el. 1460m, On Schlegelia parviflora , 28- IX-1998, ecl. 04-XI-1998, coll. Harry Ramirez, 98-SRNP-3836, USNMENT01980002 GoogleMaps .

Distribution. ( Fig. 34 View FIGURES 33–36 ). Acronyctodes asignum has been documented in the Central and Guanacaste Cordilleras of Costa Rica, found at elevations ranging from 1300 to 1800 meters (approximately 4200 to 5900 feet).

Biology. Daniel Janzen, Winnie Hallwachs, and ACG parataxonomists, have found 73 wild caterpillars of this species feeding on Schlegelia parviflora (Oerst.) Monach. ( Schlegeliaceae ), occasionally classified in Scrophulariaceae . To date, this plant remains the sole confirmed food record for this caterpillar, despite the presence of related plant genera in the vicinity.

Etymology. The specific epithet asignum recognizes the absence (“a-” for “without”) of a signum in the female genitalia, distinguishing this species from visually similar known congeners.

Molecular data. Sixty-six specimens of A. asignum (BOLD BIN: BOLD:AAC1083) have been DNA barcoded, revealing a pairwise distance of approximately 3% from nearest-neighbor, A. colorata (BOLD BIN: BOLD: AAJ6454).