Nylanderia steinheili

Identification Keys including this Taxon

 * Key to Nearctic Nylanderia workers
 * Key to Nearctic Nylanderia males

Distribution based on Regional Taxon Lists
Malagasy Region: Seychelles. Nearctic Region: United States. Neotropical Region: Brazil, Colombia, Costa Rica, Cuba, Dominican Republic, Ecuador, Galapagos Islands, Greater Antilles, Grenada, Guadeloupe, Guatemala, Haiti, Honduras, Lesser Antilles, Mexico, Netherlands Antilles, Panama, Puerto Rico, Trinidad and Tobago, Venezuela.

Nomenclature

 *  steinheili. Prenolepis steinheili Forel, 1893g: 342 (w.) ANTILLES. Forel, 1908b: 64 (q.); Forel, 1912i: 66 (m.). Combination in Pr. (Nylanderia): Forel, 1912i: 66; in Paratrechina (Nylanderia): Emery, 1925b: 223; in Nylanderia: Kempf, 1972a: 168; in Paratrechina: Brandão, 1991: 367; in Nylanderia: LaPolla, Brady & Shattuck, 2010a: 127. Current subspecies: nominal plus minuta (unresolved junior homonym). Senior synonym of minuta: LaPolla & Kallal, 2019: 437.
 * minuta. Prenolepis steinheili var. minuta Forel, 1893g: 343 (w.q.m.) ANTILLES.
 * [Unresolved junior primary homonym of Prenolepis imparis var. minuta Emery, 1893i: 636 (Bolton, 1995b: 314).]
 * Combination in Pr. (Nylanderia): Forel, 1912i: 66; in Paratrechina (Nylanderia): Emery, 1925b: 223; in Nylanderia: Kempf, 1972a: 168; in Paratrechina: Brandão, 1991: 367; in Nylanderia: LaPolla, Brady & Shattuck, 2010a: 127.
 * Junior synonym of steineili: LaPolla & Kallal, 2019: 437.

Worker
Reine. L. 2, 1 a 2, 4 mill. Mandibules armees de 6 dents, luisantes, avec quelques stries et quelques points epars. Tete ovale•rectaugulaire, aussi large devant que derriere. Les scapes depassent le bord posterieur de la tete d'1/3 environ de leur longueur. Epistome a peine concave au milieu de son bord anterieur. Thorax assez robuste, profondement echancre entre le mesonotum et le metanotum. L'echancrure est presque aussi large au fond qu'un peu plus haut, c'est a dire qu'elle a au fond une courte surface plus ou moins plane, non pas seulement une simple ligne transversale, et que ses bords s'elevent d'une facon abrupte, subverticale, tant vers le mesonotum que vers le metanotum. Au fond de l'echancrure sont deux stigmates presque aussi gros que l'intervalle qui les separe l'un de l'autre. La metanotum est en bosse arrondie et presque aussi eleve que le mesonotum; sa face basale est un peu plus courte que sa face declive dont on peut a peine la distinguer.

Ecaille, face declive du metanotum, cotes du thorax, epistome et parfois une partie du pronotum lisses, luisants, et glabres. Le reste ponctue, mediocrement pubescent et subopaque.

Les soies dressees ont la repartition ordinair6 sur le corps, les pattes et les antennes. Elles sont plus epaisses et plus obtuses que chez les formes precedentes, d'un brun noiratre.

D'un noir brun on parfois d'un brun noir. Thorax et pedicule souvent d'un brun plus clair. Antennes, mandibules et pattes brunates. Tarses, articulations des pattes, hanches et anncaux femoraux d'un jaune tres pale, parfois meme blanchatre. La taille varie tres peu.

Type Material
Antille de St. Thomas (moi-meme), Guatemala (Dr. Stoll).

References based on Global Ant Biodiversity Informatics

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