Megachile (Callomegachile) disjuncta (Fabricius, 1781)

Chatthanabun, Nontawat, Ascher, John S., Pinkaew, Nantasak, Thanoosing, Chawatat, Traiyasut, Prapun & Warrit, Natapot, 2020, Resin bees of genus Megachile, subgenera Callomegachile and Carinula (Hymenoptera, Megachilidae) from Thailand with description of a new species, ZooKeys 997, pp. 95-144 : 95

Megachile (Callomegachile) disjuncta (Fabricius, 1781) Figs 3 , 4 , 5

Apis disjuncta Fabricius, 1781: 481. Female type (ZMUC, not examined) “America” [erroneous; surely from Asia, and perhaps from India].

Anthophora disjuncta : Fabricius, 1804: 374.

Trachusa disjuncta : Jurine, 1807: 251.

Megachile disjuncta : Lepeletier, 1841: 331.

Megachile (Pseudomegachile) disjuncta : Friese, 1911: 207.

Chalicodoma (Callomegachile) disjuncta : Michener, 1965: 191.

Diagnosis.

Female can be recognized by its medium body size (13-18 mm); black body covered with black hairs throughout, except propodeal triangle and T1 with white hairs (Fig. 4a ); apical margin of clypeus with two small tubercles (Fig. 4d ); mandibles five teeth with two stout apical teeth at apex and three small teeth basally; labrum rectangle; apical margin of clypeus truncate with two lateral teeth (Fig. 4e ); wings hyaline except fuscous apical part; black scopa (orange in part in females of the superficially similar leafcutter bee M. (Aethomegachile) conjuncta Smith, 1853 which also has a shorter and less parallel-sided metasoma, finer tergal punctures, and cutting edges on mandibles). Male is similar to female except paraocular area and apical margin of clypeus with white hairs (Fig. 5c ); mandibles three teeth; labrum rectangle with round corners (Fig. 5d ).

Literature records.

China. Anhui, Beijing, Fujian, Guangxi Zhuang, Guizhou, Hainan, Hebei, Hunan, Jiangsu, Jiangxi, Shandong, Shanghai, Shanxi, Sichuan, Zhejiang; India. Andaman and Nicobar Islands: Long Island (notable records from Cockerell 1912), Andhra Pradesh, Chandigarh, Haryana, Karnataka, Maharashtra, Puducherry, Tamil Nadu, Uttarakhand ( Lepeletier 1841; Smith 1873; Gribodo 1884; Bingham 1897; Cameron 1907; Friese 1911; Cockerell 1912; Cockerell 1919; Flectcher 1920; Dover 1921; Schulthess-Rechberg 1935; Ascher et al. 2016); Indonesia. Java, Sumatra ( Gribodo 1884; Schulthess-Rechberg 1935; Ascher et al. 2016); Madagascar. Antananarivo, Bourbon, Toamasina ( Gribodo 1884; Grandidier 1890; Pauly 2001; Ascher et al. 2016); Malaysia. Kelantan, Kepong, Kuala Lumpur, Negeri Sembilan, Penang, Selangor, ( Ascher et al. 2016); Mauritius. Rodrigues Island ( Smith 1873; Gribodo 1884; Bingham 1897; Cameron 1907; Pauly 2001; Ascher et al. 2016); Myanmar. Tenasserim ( Bingham 1897; Flectcher 1920; Dover 1921; Schulthess-Rechberg 1935); Reunion. (Pauly 2001; Ascher et al. 2016); Seychelles. Mahe, Morne Blanc, Praslin Island ( Cameron 1907; Cockerell 1912; Pauly 2001; Ascher et al. 2016); Singapore. ( Ascher et al. 2016); Sri Lanka. Hambantota, Puttalam ( Ascher et al. 2016); Vietnam. Thai Binh ( Ascher and Pickering 2020). Additional records based on images on iNaturalist are from Bangkok, Chaiyaphum, Surat Thani, and Udon Thani Provinces (credit: lennyworthington 2017; nopcoeur 2018; bernhard_hiller 2019; tonykris 2019; alexeyreshchikov 2020).

Material examined.

Thailand. Ayutthaya Province: 1♀, XI-1961, coll. unknown (leg. NC and NW); 1♀, Beung Pra ram, 01-VIII-1970, coll. unknown (leg. NC and NW). Bangkok Province: 1♀, Phra Nakhon, 05-I-1960, coll. unknown (leg. NC and NW); 1♀, Phra Nakhon, 12-VII-1960, coll. unknown (leg. NC and NW); 1♀, 15-II-1963, coll. unknown (leg. NC and NW); 1♀, Nong Khaem district, 16-IX-1966, coll. Wanida (leg. NC and NW); 1♀, Bang Khen district, 19-VII-1969, coll. unknown (leg. NC and NW); 1♀, Thonburi district, 01-VII-1970, coll. unknown (leg. NC and NW); 1♀, Sa Torn district, Thungmahamek subdistrict, 22-IV-1971, coll. unknown (leg. NC and NW); 1♀, 05-VIII-1971, coll. unknown (leg. NC and NW); 1♀, Sathorn district, Soi Suanglu1, 05-X-2009, coll. K. Attasopa (leg. NC and NW); 1♀, Sathorn district, Soi Suanglu1, 06-X-2009, coll. K. Attasopa (leg. NC and NW). Chanthaburi Province: 1♀, Tha Mai district, 19-IX-1969, coll. unknown (leg. NC and NW); 1♀, Makam district, 25-III-2015, coll. N. Chatthanabun (leg. NC); 1♀, 08-V-1956, coll. unknown (leg. NC and NW); 1♀, Bang Pra district, 08-X-1963, coll. unknown (leg. NC and NW); 1♀, Ang Sila, 04-VII-1970, coll. Nonglak (leg. NC and NW); 1♀, Sriracha district, Bang Pra Reservoir, 04-VII-1971, coll. unknown (leg. NC and NW); 1♀, Mueang district, Soi Na Khao Bor Yang, 13°6'10.2066"N, 100°57'59.5764"E, Alt. 15.86 m, 27-VII-2017, coll. P. Traiyasut (leg. NC and NW). Chiang Mai Province: 1♀, 09-VII-1959, coll. Unknown (leg. NC and NW); 39 ♀, Mueang district, Suthep subdistrict, Faculty of Agriculture Chiang Mai University, 18°47'38.6772"N, 98°57'32.9220"E, Alt. 391 m, 19-VII-2015, coll. Warrit et al. (leg. NC and NW); 17♂, Mueang district, Mae Hia subdistrict, 18°45'51.1272"N, 98°55'39.6192"E, Alt. 232 m, 19-VII-2015, coll. Warrit et al. (leg. NC and NW). Chiang Rai Province: 1♀, Pan district, 17-I-2009, coll. T. Yusing (leg. NC and NW). Loei Province: 1♀, Phu Kradueng district, Phu Kradueng National Park, 16°52'22.4934"N, 101°50'11.7384"E, Alt. 506.28 m, 29-V-2016, coll. Warrit et al. (leg. NC and NW). Kanchanaburi Province: 12♂, Sai Yok district, Wang Krachae subdistrict, 14°9'56.7678"N, 99°3'30.5640"E, Alt. 101.80 m, 24-VI-2016, coll. Warrit et al. (leg. NC and NW); 2♂, Sai Yok district, Wang Krachae subdistrict, 14°11'6.5724"N, 99°3'6.9258"E, Alt. 102.30 m, 24-VI-2016, coll. Warrit et al. (leg. NC and NW). Lop Buri Province: 1♀, 10-IX-2013, coll. Warrit (leg. NC and NW). Nakhon Nayok Province: 1♀, Khao Yai National Park, 06-IX-1970, coll. unknown (leg. NC and NW). Nakhon Pathom Province: 1♂, Kamphaeng Saen district, Kasetsart University Kamphaeng Saen campus, 06-II-2008, coll. Patneti (leg. NC and NW); 1♂, Kamphaeng Saen district, Kasetsart University Kamphaeng Saen campus, 15-VI-2011, coll. Patneti (leg. NC and NW); 1♀, Kamphaeng Saen district, Kasetsart University Kamphaeng Saen campus, 30-XI-2013, coll. Sunita (leg. NC and NW); 1♀, 4♂, Kamphaeng Saen district, 13°44'58.3908"N, 99°52'33.1242"E, Alt. 14 m, 10-VII-2015, coll. Warrit et al. (leg. NC and NW); 1♀, Kamphaeng Saen district, Kasetsart University Kamphaeng Saen campus, 26-I-2016, coll. Noppasiri (leg. NC and NW); 1♀, Kamphaeng Saen district, Kasetsart University Kamphaeng Saen campus, 20-III-2016, coll. K. Laesen (leg. NC and NW); 1♀, Kamphaeng Saen district, Kasetsart University Kamphaeng Saen campus, 29-III-2016, coll. Jirawat (leg. NC and NW); 1♀, Kamphaeng Saen district, Kasetsart University Kamphaeng Saen campus, 14-IV-2016, coll. Adisak (leg. NC and NW); 1♂, Kamphaeng Saen district, Kasetsart University Kamphaeng Saen campus, 11-V-2016, coll. Vilunda (leg. NC and NW); 1♂, Kamphaeng Saen district, Kasetsart University Kamphaeng Saen campus, 04-IX-2016, coll. S. Laengsaruk (leg. NC and NW); 5♀, Kamphaeng Saen district, 14°0'35.1072"N, 100°0'35.9028"E, Alt. 11 m, 12-II-2017, coll. N. Chatthanabun, N. Warrit and V. Sivayyapram (leg. NC and NW). Nakhon Ratchasima Province: 1♀, Pak Chong, 06-I-1964, coll. unknown (leg. NC and NW); 1♀, Pak Chong, 28-VII-1969, coll. W. Sooksri (leg. NC and NW). Nonthaburi Province: 1♀, Pak Kred district, Khlong Phapha, coll. unknown (leg. NC and NW). Pathum Thani Province: 1♂, Ban Ngew district, Samkok subdistrict, Pai rom temple, 18-II-1968, coll. Chairoj (leg. NC and NW); 1♂, 18-II-1968, coll. Rojnee (leg. NC and NW). Phayao Province: 1♂, Mueang district, Mae Ka subdistrict, Phayao University, 03-I-2009, coll. Saowalak (leg. NC and NW); 16♂, Mueang district, Mae Ka subdistrict, Phayao University, 01-VI-2012, coll. Warrit et al. (leg. NW); 1♀, Mae Ka, Phayao University, 19°2'45.3510"N, 99°52'40.5438"E, Alt. 464.26 m, 5-VII-2016, coll. Warrit et al. (leg. NC and NW). Ratchaburi Province: 1♀, 22-VIII-1970, coll. unknown (leg. NC and NW); 1♀, 17-VIII-1973, coll. Pinpong (leg. NC and NW); 2♀, Potharam district, 13°44'50.0070"N, 99°53'38.4180"E, Alt. 6 m, 13-VII-2015, coll. Warrit et al. (leg. NC and NW); 1♀, 01-V-2017, coll. Pornchanok (leg. NC and NW). Rayong Province: 1♀, Ban Pae, 03-VIII-1971, coll. unknown (leg. NC and NW). Samut Prakan Province: 1♂, Park Nam district, 11-VIII-1963, coll. P. Sakulmon (leg. NC and NW). Samut Sakhon Province: 1♂, Banpaew district, 19-VIII-2014, coll. P. Tangtorwongsakul (leg. NC and NW). Saraburi Province: 1♀, 30-VIII-1960, coll. B. Pasook (leg. NC and NW); 1♀, Muak Lek, 03-VIII-1967, coll. unknown (leg. NC and NW); 1♀, Phu Khae, 04-II-1968, coll. Decha (leg. NC and NW); 1♀, Muak Lek, 03-VIII-1971, coll. Unknown (leg. NC and NW). Suphan Buri Province: 1♀, 13-IV-2015, coll. Kaewkan (leg. NC and NW). Trat Province: 1♀, Mueang district, Ao Yai, 23-III-2015, coll. N. Chatthanabun (leg. NC). Trang Province: 1♂, Na Yong district, 7°33'8.0892"N, 99°46'33.6072"E, Alt. 24 m, 11-VI-2015, coll. Warrit et al. (leg. NC and NW). Ubon Ratchathani Province: 1♂, Trakan Phuetphon district, Sarin lake view village, 03-VIII-2014, coll. N. Chatthanabun (leg. NC). Unknown localities: 1♂, 16-VIII-1960, coll. unknown (leg. NC and NW); 1♀, 01-I-1965, coll. unknown (leg. NC and NW); 2♀, 2♂, coll. unknown (leg. NC and NW).

Floral records.

Throughout Thailand, M. (Callomegachile) disjuncta can be found abundantly in many agricultural plots that are planted with Crotalaria juncea L., a common plant species grown for providing essential nitrogen element to many crop plants in Thailand. Also, a common weed, Bidens pilosa L., is frequently visited by the species. One record of M. (Callomegachile) disjuncta was found on Cratoxylum cochinchinense (Lour.) Blume.

Comments.

Female somewhat superficially resembles M. (Aethomegachile) conjuncta in size and overall appearance.

Figures

Figure 3. Thai distribution of Megachile (Callomegachile) disjuncta.

Figure 4. Megachile (Callomegachile) disjuncta (Fabricius, 1781), female a dorsal view b lateral view c frontal view d oblique view of clypeal margin e frontal view of mandible and labrum f dorsal view of metasoma g lateral view of metasoma and scopa.

Figure 5. Megachile (Callomegachile) disjuncta (Fabricius, 1781), male a dorsal view b lateral view c frontal view d frontal view of mandible and labrum e frontal view of T 7 f ventral view of metasomal sterna g dorsal (left) and ventral (right) views of penis h dorsal view of S 8 i T 7 j S 5.