Micrurus pachecogili CAMPBELL, 2000
Can you confirm these amateur observations of Micrurus pachecogili?
|Higher Taxa||Elapidae, Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)|
|Common Names||E: Pueblan Coralsnake|
S: Coralillo de Puebla
|Synonym||Micrurus pachecogili CAMPBELL 2000|
Micrurus pachecogili — WALLACH et al. 2014: 452
Micrurus pachecogili — MATA-SILVA et al. 2015
|Distribution||Mexico (Oaxaca, Puebla)|
Type locality: 5.6 km SSW Zapotitlán Salinas, elevation 1494 m, Puebla, Mexico.
|Types||Holotype: UTA R-12546|
|Diagnosis||Diagnosis. Micrurus pachecogili dif fers most notably from other species of Mi curus in central Mexico in being tricolored and having black body rings in monads (i.e., a body pattern of red-yellow-black yellow-red), in having 220-223 ventrals in males, in possessing a wide pale pariefal ring that includes all of the parietals and portions of adjacent scales, and in having non-melanized red body rings that are about equal to or shorter than black body rings. lndeed, these four characters, in combina tion, distinguish M. pachecogili from alt other venomous Mexican coral snakes. Micrurus bemadi differs in having mostly red and black body rings, although a yellow parietal ring and, rarely, narrow yellow edg ing may be present along black markings, black rings are usually reduced to dorsal spots or saddlelike bands, and males have" 198-212 ventrals. Micrurus browni differs in having a black nuchal ring that covers the posterior portion of the parietals and adult males have supracloacal keels. In M. b. browni of Guerrero and Oaxaca, the subspe eies that is geographically most proximate to Zapotitlan, males have 204-218 ventrals, the black head cap extends to the anterior part of the parietals and frontal, and the black nuchal ring covers the ultimate and penulti mate supralabials (versus only the posterior edge of the ultimate supralabial). Micrurus diastema differs in that the red rings are ei ther very Iong ( > 5 limes wider than the black rings) or contain scales thai are dis tinctly black-tipped, the black head cap in cIudes the anterior portion of the parietals and/or the black nuchal ring incIudes the posterior portion of the parietals. Micrurus distans of western Mexico differs in having no more than 17 black body rings, males have ≤217 ventrals, and red body rings are usually at least three times longer than black rings. Micrurus ephippijer differs in having a black nuchal ring that covers the parietal tips, red rings have black-tipped scales, spots, or large saddlelike bands, and :s;219 ventrals in males. Micrurus laticollaris has black body rings arranged in triads (i.e., body pattern of red-black-yellow-black-yel low-black-red), has 1 + 2 temporals, and males possess ≤215 ventrals. Micrurus fim balUS is bicolored with red and black rings and ≤ 192 ventrals. Overall, the color pattern of M. pachecogili is most similar to that of M. nebularis: simiIarities include red and black rings of relatively equal length, scales in red rings not black-tipped or distinctly spotted, weil developed yellow body rings (1.0-1.5 dorsal scale lengths long in M. ne bularis versus 2.0 in M. pachecogili), and tail with subequal black and yellow rings. Micururus nebularis differs by having a black nuchal ring that covers the posterior ends of the parietals, 203-208 ventrals in males, and seven black tail bands (Campbell 2000).|
Variation. The paratype (UTA R-17145) is a subadult male, 327 mm in TL, with a tail length of 36, comprising 11.0% of the total. It agrees with the holotype in most respects of scutellation and pattern, but has 220 ventrals, 43 subcaudals (sub caudals 2-3 not divided); a black nuchal ring involving only the first ventral plus ad jacent two and one-half preventrals; 27 black body rings, most of which are about four dorsal scales in length throughout the body; red body rings which are two to three dorsal seales in length throughout the body; and 6 black tail rings, exclusive of the black tail tip, which are 1.5-2 times longer than the yellow rings separating them (Campbell 2000).
|Etymology||Named after the children of E. Pacheco-Gil, who collected the holotype (18°18’ N, 97° 31’ W).|