Crematogaster monteverdensis

Longino, J. T., 2003, The Crematogaster (Hymenoptera, Formicidae, Myrmicinae) of Costa Rica., Zootaxa 151, pp. 1-150: 89-91

publication ID

20256

persistent identifier

http://treatment.plazi.org/id/4863F9B1-86F4-B97C-2581-647E3C2E89F1

treatment provided by

Thomas

scientific name

Crematogaster monteverdensis
status

NEW SPECIES

Crematogaster monteverdensis  HNS  NEW SPECIES

Holotype worker

Costa Rica, Prov. Guanacaste, 3km N Santa Elena, 1500m , 10°20'N, 84°50'W, 26 Jun 1991 (Longino, collection code JTL2938) [ INBC, specimen code JTLC000001403].

Paratypes

One dealate queen, same data as holotype [ INBC, specimen code JTLC000001404];GoogleMaps  worker and queen, same data [ BMNH, specimen code JTLC000001405];GoogleMaps  worker and queen, same data [ LACM, specimen code JTLC000001406];GoogleMaps  worker and queen, same data [ MCZC, specimen code JTLC000001407];GoogleMaps  worker and queen, same data [ MHNG, specimen code JTLC000001408];GoogleMaps  worker and queen, same data [ NHMB, specimen code JTLC000001409];GoogleMaps  worker and queen, same data [ USNM, specimen code JTLC000001410];GoogleMaps  worker and queen, same data [ UCDC, specimen code JTLC000001411]GoogleMaps  .

Range

Costa Rica.

Description of worker

Differing from sumichrasti  HNS  in the following respects: tibiae with abundant suberect setae, but more uniform in length and none longer than maximum width of tibia ( sumichrasti  HNS  has one or more long macrosetae, subequal in length to twice maximum tibia width); pronotal dorsum with stronger longitudinal carinulae; dorsal and posterior faces of mesonotum meeting at an angle but angle less strongly produced, not tuberculate; dorsal pilosity generally shorter.

Measurements

Holotype: HL 0.702, HW 0.739, HC 0.685, SL 0.584, EL 0.192, WL 0.777, SPL 0.145, PTH 0.178, PTL 0.239, PTW 0.210, PPL 0.183, PPW 0.228, CI 105, OI 27, SI 83, PTHI 74, PTWI 88, PPI 125, SPI 19.

Other specimens: HL 0.726, 0.639, 0.718; HW 0.799, 0.686, 0.772; HC 0.732, 0.636, 0.699; SL 0.605, 0.554, 0.601; EL 0.199, 0.182, 0.208; A11L 0.248; A11W 0.135; A10L 0.114; A10W 0.119; A09L 0.076; A09W 0.093; A08L 0.057; A08W 0.074; WL 0.840, 0.719, 0.832; SPL 0.145, 0.134, 0.156; PTH 0.195, 0.184, 0.181; PTL 0.249, 0.222, 0.228; PTW 0.220, 0.206, 0.224; PPL 0.180, 0.151, 0.176; PPW 0.246, 0.220, 0.235; CI 110, 107, 108; OI 27, 28, 29; SI 83, 87, 84; PTHI 78, 83, 79; PTWI 88, 93, 98; PPI 137, 146, 134; SPI 17, 19, 19; ACI 0.24.

Queen

A normal queen (dorsal face of propodeum drops steeply from postscutellum and much of propodeum appears ventral to scutellum and postscutellum, Fig. 1) with general shape, sculpture, and pilosity characters of the worker; size characters as in Figures 4 and 5.

Etymology

This species is named after its type locality.

Biology

Crematogaster monteverdensis  HNS  inhabits moist forest areas in the Monteverde community area in the Cordillera de Tilarán and at a similar elevation on Cerro Cacao in the Cordillera de Guanacaste. I first encountered the species in Monteverde, where I observed workers and the small, dealate queens foraging together on the outside walls of a house. Subsequent collections were from nests in dead branches, either in recent treefalls or on the ground. These collections were generally located at pasture/forest edges. Nests were polygynous, with multiple dealate queens. Workers could be recruited to baits of mixed honey and solid vegetable oil. I have never seen alate queens, and one nest collection contained small apterous males similar to Wheeler's description of the males of atitlanica (Wheeler  HNS  1936, see under sumichrasti  HNS  ).

Comments

The two closely related species monteverdensis  HNS  and sumichrasti  HNS  are uniquely characterized by the combination of yellow coloration, relatively long, upturned propodeal spines, and long flexuous posterolateral mesonotal setae that are subequal in length to humeral setae. The only difference is that Crematogaster sumichrasti  HNS  has one or two extremely long setae on the tibiae.

I identified monteverdensis  HNS  specimens first as sumichrasti  HNS  until I discovered the consistent differences in tibial pilosity and promesonotal profile. Crematogaster sumichrasti  HNS  seems to have a microparapatric distribution with monteverdensis  HNS  , because typical sumichrasti  HNS  occur just downslope from Monteverde, at 700m elevation on the road down to the PanAmerican Highway.

BMNH

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

LACM

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

MCZC

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

MHNG

Switzerland, Geneva, Museum d'Histoire Naturelle

NHMB

Switzerland, Basel, Naturhistorisches Museum

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