Myrmelachista osa

Longino, J. T., 2006, A taxonomic review of the genus Myrmelachista (Hymenoptera: Formicidae) in Costa Rica., Zootaxa 1141, pp. 1-54: 42-43

publication ID

21030

publication LSID

lsid:zoobank.org:pub:323B9B2C-F6AE-40B5-982B-4BBEA5317786

persistent identifier

http://treatment.plazi.org/id/B477F79B-C5E0-48A2-5ED4-B2E181F4451D

treatment provided by

Thomas

scientific name

Myrmelachista osa
status

NEW SPECIES

Myrmelachista osa  HNS  NEW SPECIES

Figures 1, 4, 7, 8, 9

Holotype alate queen: Costa Rica, Prov. Puntarenas, Rancho Quemado, Osa Peninsula , 8°42’N, 83°33’W, 200m , 15 Dec 1990 (J. Longino #2752) [ INBC, specimen code JTLC000006231].GoogleMaps 

Paratypes: workers and queens, from same nest as holotype, specimen codes JTLC000006232 - JTLC000006236, distributed to MCZC, USNM, UCDC, LACM, BMNH.GoogleMaps 

Diagnosis

Worker with antenna 9-segmented, maxillary palpus 5-segmented, color yellow. Queen black; mandible punctatorugose; face smooth and shining; sides of head with short appressed to suberect pubescence, no longer erect setae; maxillary palpus 6-segmented; CI 79-84.

Worker

Same as M. flavocotea  HNS  but with tendency to develop faint infuscated bands on gastral tergites.

Measurements: HL 0.518-0.521, HW 0.479-0.511, SL 0.256-0.265, EL 0.097-0.105, CI 92-98 (n=3).

Queen

Antenna 9-segmented; maxillary palpus 6-segmented; labrum short, bilobed, not covering mouthparts; dorsal surface of mandible punctatorugose; face and clypeus largely smooth, variably roughened anteriorly; in full face view, with abundant short suberect setae on rear and side margins of head, longer setae on posterolateral vertex; ventral surface of head with abundant short erect setae; scapes with abundant erect to suberect setae, longer setae subequal to width of scape; outer surface of hind tibia with abundant short subdecumbent setae, longer setae shorter than width of tibia; color solid black.

Measurements: HL 1.181-1.226, HW 0.971-0.997, SL 0.491-0.507, EL 0.283-0.303, OW 0.062-0.081, OD 0.173-0.185, CI 79-84, OI 28-31, OcI 5-7 (n=3).

Male

Unknown.

Etymology

The name refers to the Osa Peninsula, which is the type locality.

Range

Costa Rica. In Costa Rica it occurs at Rancho Quemado on the Osa Peninsula.

Biology

This species is known from mature wet forest at Rancho Quemado on the Osa Peninsula. I collected it from three different Ocotea nicaraguensis  trees, and it appears to have a biology similar to M. flavocotea  HNS  and others.

Material Examined

COSTA RICA, Puntarenas: Rancho Quemado, Osa Peninsula , 8°42’N, 83°33’W, 200m (J. Longino, 3 collections).GoogleMaps 

INBC

Costa Rica, Santo Domingo de Heredia, Instituto Nacional de Biodiversidad (INBio)

MCZC

USA, Massachusetts, Cambridge, Harvard University, Museum of Comparative Zoology

USNM

USA, Washington D.C., National Museum of Natural History, [formerly, United States National Museum]

UCDC

USA, California, Davis, University of California, R.M. Bohart Museum of Entomology

LACM

USA, California, Los Angeles, Los Angeles County Museum of Natural History

BMNH

United Kingdom, London, The Natural History Museum [formerly British Museum (Natural History)]